U.S. patent application number 15/695572 was filed with the patent office on 2017-12-21 for oil controller for high temperature pump applications.
The applicant listed for this patent is Magna Powertrain, Inc.. Invention is credited to Karthikeyan Ganesan, Jianwen Li, Vladimir Vukas, Liping Wang.
Application Number | 20170363109 15/695572 |
Document ID | / |
Family ID | 47846196 |
Filed Date | 2017-12-21 |
United States Patent
Application |
20170363109 |
Kind Code |
A1 |
Wang; Liping ; et
al. |
December 21, 2017 |
OIL CONTROLLER FOR HIGH TEMPERATURE PUMP APPLICATIONS
Abstract
In an electric motor-driven oil pump assembly for use with an
engine in a vehicle, such as with an automatic engine-stop system
in which an electric motor-driven oil pump is driven by an electric
motor for hydraulic pressure supply to a transmission or engine of
an automotive vehicle, at least in a stopped state of a mechanical
oil pump driven by the engine, a controller for operating the motor
for controlling the oil pump is provided in a housing proximal the
flowing oil fluid such that the flowing oil fluid maintains the
temperature of the controller below a predetermined temperature to
avoid failure of the electronic components of the controller.
Inventors: |
Wang; Liping; (Richmond
Hills, CA) ; Vukas; Vladimir; (Toronto, CA) ;
Li; Jianwen; (Vaughn, CA) ; Ganesan; Karthikeyan;
(North York, CA) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Magna Powertrain, Inc. |
Concord |
|
CA |
|
|
Family ID: |
47846196 |
Appl. No.: |
15/695572 |
Filed: |
September 5, 2017 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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13982777 |
Jul 31, 2013 |
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PCT/US2013/027874 |
Feb 27, 2013 |
|
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15695572 |
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61603907 |
Feb 27, 2012 |
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
F04D 29/5813 20130101;
F04B 49/06 20130101; F04D 13/0686 20130101; F04D 29/5806 20130101;
F04B 53/08 20130101 |
International
Class: |
F04D 29/58 20060101
F04D029/58; F04B 53/08 20060101 F04B053/08; F04D 13/06 20060101
F04D013/06; F04B 49/06 20060101 F04B049/06 |
Claims
1. An electric motor-driven pump assembly for hydraulic pressure
fluid supply, the assembly comprising: an electric motor having a
casing; wherein the electric motor includes a stator and a bus-bar
coupled to the stator; a pump having a pump housing with a first
end and a second end and wherein the casing is coupled to the first
end of the pump housing, the pump including a pump fluid passage
connected to the electric motor for conveying fluid to the electric
motor; said pump further including: a fixed bushing; a pump inner
rotor surrounding the fixed bushing and rotating with respect to
the fixed busing; a pump outer rotor surrounding the pump inner
rotor and rotating with respect to the fixed busing; and a
plurality of vanes spaced from one another and extending from the
fixed bushing through the pump inner rotor to the pump outer rotor;
an inlet/outlet housing having a first end coupled to the second
end of the pump housing, the inlet/outlet housing including an
inlet passage for receiving the fluid and an outlet passage for
conveying the fluid, the inlet passage being connected to the pump
fluid passage for conveying the fluid into the pump and through the
electric motor to transfer heat from the electric motor to the
fluid before the fluid flows back into the pump and out of the
assembly through the outlet passage of the inlet/outlet housing,
wherein a first portion of the inlet/outlet housing is located
adjacent the inlet and outlet passages to provide heat transfer
between the fluid and the first portion; a controller located in
the first portion of the inlet/outlet housing and electrically
connected to the electric motor for supplying power to the electric
motor to thereby control the speed of the pump and the output of
fluid from the pump, wherein heat produced by the controller is
transferred to the fluid flowing through the inlet and outlet
passages; the inlet/outlet housing further includes a cavity
located in the first portion and a first passage extending from the
cavity to the pump; the pump includes a sealed passage extending
from the first passage of the inlet/outlet housing to the electric
motor; and the bus-bar of the electric motor includes an extension
passing through the sealed passage of the pump and into the first
passage of the of the inlet/outlet housing and is coupled to the
controller.
2. The assembly of claim 1, wherein the controller is located in
the cavity, and wherein the first passage of the inlet/outlet
housing is used for receiving wire leads to be coupled to the
controller and the electric motor.
3. The assembly of claim 2, wherein the pump and the electric motor
are sealed to prevent fluid from contacting the controller.
4. The assembly of claim 2, wherein the pump and the electric motor
are not sealed such that fluid flowing through the pump may contact
the controller to provide heat transfer from the controller to the
fluid while not causing an electrical short in the controller or
electric motor.
5. The assembly of claim 1, wherein the inlet and outlet passages
extend in a direction substantially perpendicular to an axis of the
assembly.
6. The assembly of claim 5, wherein the controller is aligned at an
angle with respect to the axis of the assembly.
7. The assembly of claim 1, wherein the inlet/outlet housing
comprises aluminum and the controller comprises a MOSFET for
supplying conductive forces for inducing a magnetic field for
controlling and driving the electric motor.
8. The assembly of claim 1, wherein the electric motor includes a
motor rotor and the pump outer rotor is pressed into the motor
rotor; the pump inner rotor includes slots allowing the vanes to
extend therethrough; and wherein the motor rotor and the pump outer
rotor rotate in the same direction and drive the pump inner rotor
and a first vane followed by a second vane and a third vane, and
the vanes swing back and forth at angles related to a curve
presenting the inner bore of the pump outer rotor; and wherein the
pump outer rotor presents an inner bore receiving an end of the
first vane.
9. The assembly of claim 8, wherein the contour of an inner
circumference of the passage of the pump outer rotor is a
pre-selected curve and rotation of the pump outer rotor moves the
first, second, and third vanes to swing back and forth.
10. The assembly of claim 1, wherein the electric motor includes a
motor fluid passage for conveying the fluid, and the pump fluid
passage is connected to the motor fluid passage for conveying the
fluid to the electric motor.
11. The assembly of claim 1, wherein the pump and electric motor
each extend along a center axis, and wherein the first passage
extends parallel to the center axis.
12. The assembly of claim 1, wherein the pump further comprises a
knob and an intersecting vane received in and extending outwardly
of the knob; and the electric motor includes a motor rotor
surrounding the intersecting vane and the stator surrounding the
motor rotor.
13. A pump assembly for supplying hydraulic pressure to a fluid,
the pump assembly comprising: a controller having a controller
housing; a motor housing coupled to the controller housing; a motor
ring; a pump outer rotor coupled to the motor ring and having a
shaped inner circumference including a shaped anchor portion; a
pump inner rotor having a plurality of arcuately spaced slots; a
first vane having a first end located in the shaped anchor portion
in the pump outer rotor, the first vane extending through a first
pair of slots in the pump inner rotor; and second and third vanes
extending through second and third pairs of slots in the pump inner
rotor; wherein the ends of the first, second, and third vanes
follow the contour of the inner circumference of the passage of the
pump outer rotor and swing back and forth along an angle defined by
the pump rotor.
14. The pump assembly of claim 13, wherein the pump outer rotor is
the driving member and the pump inner rotor is driven by the first
vane connected with pump outer rotor.
15. The pump assembly of claim 13, wherein the contour of the inner
circumference of the passage of the pump outer rotor is a
pre-selected curve and rotation of the pump outer rotor moves the
first, second, and third vanes to swing back and forth.
16. The pump assembly of claim 13, wherein the controller is
located proximal the motor ring, the pump outer rotor, the pump
inner rotor and the first, second, and third vanes such that fluid
flowing through the pump receives heat from the controller.
17. The pump assembly of claim 13, wherein the pump further
comprises a knob and an intersecting vane received in and extending
outwardly of the knob; and the electric motor includes a motor
rotor surrounding the intersecting vane and a stator surrounding
the motor rotor.
18. The assembly of claim 13, wherein the controller comprises a
MOSFET for supplying conductive forces for inducing a magnetic
field for controlling and driving an electric motor.
19. The assembly of claim 18, wherein the pump and the electric
motor are sealed to prevent fluid from contacting the
controller.
20. The assembly of claim 18, wherein the pump and the electric
motor are not sealed such that fluid flowing through the pump may
contact the controller to provide heat transfer from the controller
to the fluid while not causing an electrical short in the
controller or electric motor.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a continuation of U.S. patent
application Ser. No. 13/982,777 filed Jul. 31, 2013, which is a
U.S. National Phase of PCT/US2013/027874 filed Feb. 27, 2013, which
claims the benefit of U.S. Provisional Patent Application No.
61/603,907 filed Feb. 27, 2012. The disclosures of each of the
above-referenced applications are incorporated herein by
reference.
FIELD
[0002] The present disclosure relates generally to pumps for use in
generating a flow of a fluid. More particularly, the present
disclosure relates to an oil pump controlled by a controller for
generating a fluid flow such as an oil pump for use in an engine in
a vehicle.
BACKGROUND
[0003] It is generally known that an oil pump is used to create a
flow of fluid oil through an engine to cool and lubricate
components of the drive train or engine during operation of the
vehicle. It is also generally known to operate the oil pump using a
power take off from the engine. In some applications, it is also
generally known to provide an electric motor for operating the oil
pump. Typically, it is also known to provide a controller including
a circuit board and other electronic components for use in
controlling the oil pump during operation of the vehicle. Most of
the current applications have the controller integrated at the back
of the motor housing where it is cooled only by the air flow. These
applications are limited by maximum ambient temperature and the
amount of power (i.e., current) that the system can draw before the
electrical components of the controller overheat and shut down.
[0004] So, if the electronic control apparatus is provided in the
vehicle's power generation compartment, the temperature in the
compartment generally creates a potential problem. While the air
temperature in the compartment can be maintained at a sufficiently
low temperature when a vehicle is moving and/or operating since
fresh air flows can be used to transfer heat from the compartment,
when the vehicle is stopped, such as after its high-speed running,
the air stagnates in the compartment and is heated by the heat of
the engine, with the result that the air temperature in the
compartment rises to a relatively very high level which may lead to
component fatigue, failure or other troubles.
[0005] To obtain an electric motor which is both compact and
capable of delivering high output torque, a large current must be
passed through the coil of the motor proper and thus the controller
must be capable of providing such high current to the motor.
Passing a large current through the coil of the motor and the
controller used to manage the supply of electrical energy to the
motor can cause the motor and/or the controller to heat up and if
heated too high, to eventually fail. Generally, it is required that
the motor be cooled and that the controller be located at a
distance from the motor and the heat source to protect the
controller from extensive heat. Further, it is generally known to
use very expensive components in the controller capable of
functioning properly at such elevated temperatures. Accordingly,
space must be provided to locate the controller and the motor to be
able to function. However, it is very difficult to provide
additional space for accommodating the installation of the electric
motor and the controller because space is already very limited,
particularly in the aforementioned motorized vehicle applications.
Thus, it is very difficult to provide both the electric motor and
the pump in a limited space. This has made it almost impossible and
very expensive to implement such an electric-motor-driven pump.
[0006] The present disclosure is based on the object of providing
an electric motor-driven pump and control device by means of which
the above-described problems of the prior art are avoided.
SUMMARY
[0007] In one exemplary embodiment, there is disclosed an
electronic motor-driven pump and integrated controller including a
housing in which the controller, including power control components
(e.g., MOSFETS) for supplying power to the motor, is arranged for
controlling the rotational speed of a fluid pump and the output of
the fluid pump to be supplied to a vehicle component. The
electronic motor-driven pump includes a motor portion located at
one end, the fluid pump in the middle and an inlet/outlet housing
portion including an integrated portion for containing the
controller and its components such that the integrated portion is
located proximal the flowing fluid in the inlet and outlet and has
sufficient thermal conductivity to sufficiently dissipate heat from
the controller located in a cavity formed in the inlet/outlet
housing portion. The inlet/outlet housing portion may also include
one or more passages which extend parallel to the central axis of
the pump and the motor for receipt of the wires required for
electrically coupling the controller and the stator of the motor
such that the wires also pass through a sealed passage extending
axially through the fluid pump. Additionally, the fluid passes
through the pump and the electric drive-motor to dissipate heat
from all of the components of the assembly.
BRIEF DESCRIPTION OF THE DRAWINGS
[0008] The drawings illustrate, by way of example only, embodiments
of the present disclosure wherein:
[0009] FIG. 1 is a perspective graphic view of an exemplary
combined motor-driven pump and controller and housing system in
accordance with the present disclosure;
[0010] FIG. 2 is an exploded, perspective graphic view of the
combined motor-driven pump and controller and housing system of the
exemplary embodiment of FIG. 1 in accordance with the present
disclosure;
[0011] FIG. 3 is a cross-section, graphic view of the combined
motor-driven pump and controller and housing system of the
exemplary embodiment of FIG. 1 in accordance with the present
disclosure;
[0012] FIG. 4 is an exploded, perspective, graphic view of an
alternative embodiment of a combined motor-driven pump and
controller and housing system of the exemplary embodiment of FIG. 1
in accordance with the present disclosure;
[0013] FIG. 5 is a perspective, graphic view of a thermal image
analysis for the combined motor-driven pump and controller and
housing system of the exemplary embodiment of FIG. 1 in accordance
with the present disclosure;
[0014] FIG. 6 is a perspective, graphic view of an alternate
exemplary embodiment of a combined electric motor-driven pump,
controller and housing system in accordance with the present
disclosure showing the details of the innovation;
[0015] FIG. 7 is a further alternate partial, perspective graphic
view of the exemplary embodiment of FIG. 6 with the controller
cover and the controller removed showing the passages for routing
the wires for the controller and the motor;
[0016] FIG. 8 is a perspective, graphic view and a further
alternate embodiment of a pump for inclusion in a combined
motor-driven pump controller and housing system displaying an
alternate side for coupling the pump housing to the motor for
including the controller within the housing and affecting cooling
thereof;
[0017] FIG. 9 is a perspective, graphic view of a further alternate
embodiment of a pump for inclusion in a combined motor-driven pump
and controller and housing system similar to FIG. 8 and showing an
alternate oil inlet/outlet member;
[0018] FIG. 10 is a cross-sectional, graphic view and the further
alternate embodiment of a pump for inclusion in the motor-driven
pump of the exemplary embodiment of FIG. 9 in accordance with the
present disclosure;
[0019] FIG. 11 is a perspective, graphic view of a further
alternate embodiment of a pump for inclusion in a combined
motor-driven pump, controller and housing system similar to FIG. 8
and showing an alternate oil inlet/outlet member;
[0020] FIG. 12 is an exploded perspective, graphic view of the
further alternate embodiment of a combined pump for inclusion in
the motor-driven pump of the alternate exemplary embodiment of FIG.
11 in accordance with the present disclosure and showing an
intersecting vane embodiment according to the present
disclosure;
[0021] FIG. 13 is a perspective, graphic view of a further
alternate embodiment of a pump for inclusion in the combined
motor-driven pump and controller and housing system including an
intersecting vane similar to FIG. 12;
[0022] FIG. 14 is a partial, perspective, graphic view of the
further alternate embodiment of the pump for inclusion the combined
motor-driven pump of the alternate exemplary embodiment of FIG. 13
in accordance with the present disclosure;
[0023] FIG. 15 is a perspective, graphic view of the further
alternate embodiment of FIG. 12 showing the detail of the variable
displacement pump and the intersecting vane design;
[0024] FIG. 16 is a partial, plan graphic view of the further
alternate embodiment of FIGS. 12 and 15 further showing the detail
of the variable displacement pump and the intersecting vane design
according to the present disclosure; and
[0025] FIG. 17 is a diagrammatic view and exemplary boundary
diagram of the combined motor-driven pump and controller and
housing system according to the present disclosure.
DETAILED DESCRIPTION
[0026] Referring in general to all of the figures, the present
disclosure and teachings described herein provide for a combined
motor-driven pump and controller system, hereinafter referred to as
an electric motor-driven oil pump assembly 10, for use in
automotive applications such as in association with a vehicle
engine or drive train, such as a transmission. The electric
motor-driven oil pump assembly 10 provides lubrication, cooling and
pressure in various system configurations. The primary elements of
this electric motor-driven oil pump assembly 10 system are: the
pump 20 contained with a pump housing 21, which may be of any known
or appropriate type (such as a fixed or variable displacement type
pump), a motor 30, in particular a brushless direct current (DC)
type motor contained within a motor casing, also referred to as
casing 31, and a motor controller 40, such as a power inverter and
an appropriate electrical connector for electrically coupling the
electric motor-driven oil pump 10 to a source of electrical current
power (such as a battery or similar type device). In addition, the
electric motor-driven oil pump assembly 10 may also include known
and/or appropriate diagnostics and sensor signals (not shown). The
electric motor-driven oil pump assembly 10 is configured such that
the whole assembly may be fully integrated (i.e., the pump 20,
motor 30, controller 40 and electrical connector) and contained in
a single, sealed (integrated) body due to system restrictions such
as packaging. However, in application, such a system is exposed to
high ambient temperatures due to mounting locations and positions
directly on the transmission or engine body (not shown) and even
sometimes locations inside the transmission body. In these
applications, the electric motor-driven oil pump assembly 10 is
typically exposed to potentially very severe environments including
elevated temperatures. The most sensitive component to high ambient
temperatures is the motor controller 40 which has the effect of
limiting the maximum operating temperature of the electric
motor-driven oil pump assembly 10. Currently, maximum operating
temperatures for the motor controller subcomponents are as
generally: 175 degrees Celsius for the FET junction, 150 degrees
Celsius for the motor controller unit MCU and 135 degrees Celsius
for the capacitor.
[0027] To ensure that the noted temperature limits are not exceeded
during maximum ambient temperature operation (Ta=138 degrees
Celsius), the oil pump 20 uses oil flow to cool the controller 40.
Primarily, the benefit of the electric motor-driven oil pump
assembly 10 according to the present disclosure is that it enables
operation of the electric motor-driven oil pump assembly 10 under
relatively higher ambient temperature conditions and at the same
time provides for the possibility to reduce cost by using lower
temperature grade electronic components as compared to known
systems. As best shown in FIG. 5, pursuant to one set of exemplary
operating conditions (i.e., ambient air at 138 degrees Celsius) the
temperature of the oil flowing through the pump 20 keeps the oil at
the inlet and at the outlet at 125 degrees Celsius which is below
the noted temperature limits. Similarly, in FIG. 6 the oil flows at
4.5 liters per minute (lpm) and the controller 40 is located in a
first portion of an inlet/outlet housing 44 coupled to the oil pump
assembly 20. The first portion of the inlet/outlet housing 44
includes a first cavity 42 for receiving the controller 40 therein
and having a cover secured to the inlet/outlet housing 44 for
sealing the controller 40 and its components in the first cavity
42. The material of the inlet/outlet housing 44 is preferably
chosen to have a relatively high thermal conductivity such as a
metal, such as aluminum or an aluminum alloy or other known or
appropriate materials. The first cavity 42 in the inlet/outlet
housing 44 includes at least a first passage 45 extending from the
first cavity 42 to the pump 20 and to a stator of the brushless
direct current motor 30. As best shown in the embodiment of FIG. 4,
a bus-bar may be included in the motor assembly 30, coupled to the
stator, and including an extension for passing through a sealed
passage extending through the pump 20 and into the passage of the
inlet/outlet housing 44 for being coupled and electrically
connected with the controller 40 therein.
[0028] As shown in the cross-section of FIG. 3, the controller 40
is located in the first cavity 42 to be reasonably closely located
proximate the inlet and outlet passages 45, 47, respectively, in
the inlet/outlet housing 44 so that there is efficient heat
transfer between the controller 40 and the fluid flowing
therethrough. As the oil flows into the assembly 10, it will have a
relatively lower temperature than the heat produced by the motor 30
and will flow through the pump 20, through the motor 30 and then
back through the motor 30 and out of the inlet/outlet housing 44
where it will have a hydraulic pressure and flow to the vehicle
component, such as a transmission or engine as well as, optionally,
a heat exchanger where the oil may be cooled using any known or
appropriate system and then returned to the assembly 10. In the
embodiments shown, it is possible for the motor 30 to be completely
sealed such that the fluid flowing through the motor is completely
sealed such that the fluid does not and cannot contact any of the
electrical components of the motor 30 or of the controller 40. A
completely sealed assembly 10 is particularly significant and
important for a fluid that may cause the electrical components to
short, such as water. Alternatively, for a fluid that will not
cause the electrical components to short, it is possible for the
motor 30 and the controller 40 to be partially sealed or unsealed
such that the fluid is allowed to contact the electrical components
and thereby increase the heat transfer away from the electrical
components.
[0029] In an alternate embodiment shown in FIGS. 8 through 14, the
pump 120 is shown having a controller 140 located at one side
surface of the pump 120. In particular, different types of pumps
may be used such as the external rotor vane pump of FIGS. 9 and 10
as well as the intersecting vane pump of FIGS. 11 through 15
incorporating the teachings and disclosure of the present
innovation. As should be understood from the present disclosure, it
is possible to incorporate the teachings and disclosures of the
present innovation into motor designs providing a variety of
performance requirements and specifications including inter and out
rotors, having between at least 12 Volts and 300 Volts
applications. Further, it is possible to design the controller for
providing a wide variety of design requirements such as FOC and
Block, and 12V and 300V applications as well as including a variety
of control strategies (i.e., control strategies based upon motor
speed, torque, and current as well as based upon pump pressure).
Accordingly, it should also be understood that the assembly 10 of
the present disclosure provides for a variety of communication
protocols to be utilized including but not limited to PWM, K-line,
LINE, CAN or any other known or appropriate protocol. Accordingly,
it is possible to provide an assembly 10 that is optimized to a
significant variety of design specifications and preferences.
[0030] In particular, it is contemplated that the assembly 10
according to the present disclosure, provides for a novel motor
design for increasing the overall electric motor-driven pump
performance while increasing the efficiency and reliability of the
assembly 10 while reducing the costs of the components of the
controller 40 and thereby the overall costs of the assembly 10.
[0031] Referring now in particular to the intersecting vane pump of
FIGS. 13 through 16 there is shown an oil pump 200. The pump 200
includes a top plate, a motor, and a pump outer rotor and a pump
inner rotor, as best shown in FIGS. 15 and 16. In particular, it
should be understood that the outer pump rotor and the inner pump
rotor both rotate with respect to the fixed bushing. Further of
note is that the pump 200 includes first, second, and third vanes
(Vane 1, Vane 2, and Vane 3, respectively). Similar to the assembly
10 above, the pump 200 includes a controller (or PCB) coupled to a
Base Plate and located under a Top (or Cover) Plate as best shown
in FIGS. 13 and 14. The controller (PCB) is installed on the back
side of the Base Plate so its heat will be dissipated by the fluid
flowing from the Inlet Port to the Outlet Port. The oil pump 200
may further comprise a knob and the intersecting vane received in
and extending outwardly from the knob. The electric motor may
include the motor rotor surrounding the intersecting vane and the
stator surrounding the motor rotor.
[0032] The internal components of the electric motor-driven oil
pump 200 generally include the Motor Rotor, the Pump Outer Rotor,
Vane 1, Vane 2, Vane 3, the Pump Inner Rotor and the Bushing all
coupled together as shown. The Inlet Port and Outlet Port are
located in the Base Plate and are coupled to the pump 200 for
flowing the fluid through the pump using the intersecting vane
design as shown.
[0033] The Pump Outer Rotor is preferably pressed into the Motor
Rotor. The Pump Outer Rotor includes at a first location a half
circle or scallop on the inner bore of the Pump Outer Rotor for
receiving a first end of Vane 1. Vane 1 extends from the scallop in
the inner bore of the Pump Outer Rotor and through a first slot
located transversely across the Pump Inner Rotor. Vane 2 and Vane 3
are installed in second and third slots of the Pump Inner Rotor and
are each guided by the shaped contour of the inner circumference of
the bore or passage of the Pump Outer Rotor. The contour of the
inner circumference of the bore or passage of the Pump Outer Rotor
is shaped to affect the operation of the Vanes 1, 2, and 3 during
rotation of the rotors for the pump 200 to perform consistent with
desired design requirements. When the motor 200 is working, the
Motor Rotor and Pump Outer Rotor will rotate in a clockwise
direction as shown in FIG. 15, and will drive Vane 1 and the Pump
Inner Rotor and then will drive Vane 2 and Vane 3 but, the three
Vanes will only swing back and forth during some angles related to
the Pump Rotor to move fluid through the pump 200 causing oil to
flow from the Inlet Port through the pump to the outlet port.
[0034] The configuration of the pump 200 according to the present
disclosure is selected so the Pump Outer Rotor is a driving member
and the Inner Rotor is driven by Vane 1 connected with Pump Outer
Rotor. This type of pump driving method and configuration is unique
so the contour of the inner circumference of the bore or passage of
the Pump Outer Rotor is a pre-selected curve so that when the Pump
Outer Rotor is rotated, the three Vanes 1, 2, and 3 will only swing
back and forth during some angles related to the Pump Rotor.
[0035] The pump 200 of the present disclosure particularly benefits
from the current design because the electric motor-driven oil pump
200 may work at high ambient temperature conditions while at the
same time providing the possibility for significantly reduced cost
by using lower temperature grade electronic components in the
controller (PCB) as well as a reduced number of mechanical
components making up the pump 200 as compared to conventional vane
pumps thereby further reducing cost.
[0036] Any numerical values recited herein or in the figures are
intended to include all values from the lower value to the upper
value in increments of one unit provided that there is a separation
of at least 2 units between any lower value and any higher value.
As an example, if it is stated that the amount of a component or a
value of a process variable such as, for example, temperature,
pressure, time and the like is, for example, from 1 to 90,
preferably from 20 to 80, more preferably from 30 to 70, it is
intended that values such as 15 to 85, 22 to 68, 43 to 51, 30 to 32
etc. are expressly enumerated in this specification. For values
which are less than one, one unit is considered to be 0.0001,
0.001, 0.01 or 0.1 as appropriate. These are only examples of what
is specifically intended and all possible combinations of numerical
values between the lowest value and the highest value enumerated
are to be considered to be expressly stated in this application in
a similar manner. As can be seen, the teaching of amounts expressed
as "parts by weight" herein also contemplates the same ranges
expressed in terms of percent by weight. Thus, an expression in the
Detailed Description of the Invention of a range in terms of at
"`x` parts by weight of the resulting polymeric blend composition"
also contemplates a teaching of ranges of same recited amount of
"`x` in percent by weight of the resulting polymeric blend
composition."
[0037] Unless otherwise stated, all ranges include both endpoints
and all numbers between the endpoints. The use of "about" or
"approximately" in connection with a range applies to both ends of
the range. Thus, "about 20 to 30" is intended to cover "about 20 to
about 30," inclusive of at least the specified endpoints.
[0038] The disclosures of all articles and references, including
patent applications and publications, are incorporated by reference
for all purposes. The term "consisting essentially of" to describe
a combination shall include the elements, ingredients, components
or steps identified, and such other elements, ingredients,
components or steps that do not materially affect the basic and
novel characteristics of the combination. The use of the terms
"comprising" or "including" to describe combinations of elements,
ingredients, components or steps herein also contemplates
embodiments that consist essentially of the elements, ingredients,
components or steps. By use of the term "may" herein, it is
intended that any described attributes that "may" be included are
optional.
[0039] Plural elements, ingredients, components or steps can be
provided by a single integrated element, ingredient, component or
step. Alternatively, a single integrated element, ingredient,
component or step might be divided into separate plural elements,
ingredients, components or steps. The disclosure of "a" or "one" to
describe an element, ingredient, component or step is not intended
to foreclose additional elements, ingredients, components or
steps.
[0040] It is understood that the above description is intended to
be illustrative and not restrictive. Many embodiments as well as
many applications besides the examples provided will be apparent to
those of skill in the art upon reading the above description. The
scope of the invention should, therefore, be determined not with
reference to the above description, but should instead be
determined with reference to the appended claims, along with the
full scope of equivalents to which such claims are entitled. The
disclosures of all articles and references, including patent
applications and publications, are incorporated by reference for
all purposes. The omission in the following claims of any aspect of
subject matter that is disclosed herein is not a disclaimer of such
subject matter, nor should it be regarded that the inventors did
not consider such subject matter to be part of the disclosed
inventive subject matter.
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