U.S. patent application number 14/914999 was filed with the patent office on 2016-07-21 for thermostat housing for a thermostat of an engine cooling arrangement.
This patent application is currently assigned to MAHINDRA & MAHINDRA LIMITED. The applicant listed for this patent is MAHINDRA & MAHINDRA LIMITED. Invention is credited to Dhananjaya Rao Boita, Prafulla Prakash Ghare, Senthur Pandiyan, Mohankumar Pradeep, Parth Swaroop, Ramasamy Velusamy, Karthikeyan Venkatachalam.
Application Number | 20160208677 14/914999 |
Document ID | / |
Family ID | 52587440 |
Filed Date | 2016-07-21 |
United States Patent
Application |
20160208677 |
Kind Code |
A1 |
Boita; Dhananjaya Rao ; et
al. |
July 21, 2016 |
THERMOSTAT HOUSING FOR A THERMOSTAT OF AN ENGINE COOLING
ARRANGEMENT
Abstract
A housing for a thermostat includes a body, a cavity, at least
one director member and at least one retainer member. The body
defines an enclosure that receives coolant fluid. The enclosure is
in fluid communication with a pump that pumps the coolant fluid to
a sink for dissipating heat extracted by the coolant fluid. The
cavity configured on body receives and holds thermostat that
determines temperature of coolant fluid. The director member is
configured on at least one internal wall of the enclosure and
defines flow path of the coolant fluid so as to direct coolant
fluid to thermostat and facilitate sufficient contact between
coolant fluid and thermostat and the retainer member configured on
the body is disposed around thermostat to prevent the coolant fluid
from bypassing of the thermostat, thereby retaining coolant fluid
in contact with thermostat to ensure precise sensing of temperature
by the thermostat.
Inventors: |
Boita; Dhananjaya Rao;
(Chennai, IN) ; Ghare; Prafulla Prakash; (Nagpur,
IN) ; Venkatachalam; Karthikeyan; (Pilani, IN)
; Swaroop; Parth; (Potheri, IN) ; Pradeep;
Mohankumar; (Sivakasi, IN) ; Pandiyan; Senthur;
(Chennai, IN) ; Velusamy; Ramasamy; (Chengalpet,
IN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
MAHINDRA & MAHINDRA LIMITED |
Mumbai |
|
IN |
|
|
Assignee: |
MAHINDRA & MAHINDRA
LIMITED
Mumbai
IN
|
Family ID: |
52587440 |
Appl. No.: |
14/914999 |
Filed: |
August 21, 2014 |
PCT Filed: |
August 21, 2014 |
PCT NO: |
PCT/IN2014/000537 |
371 Date: |
February 26, 2016 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
G05D 23/022 20130101;
F01P 7/16 20130101 |
International
Class: |
F01P 7/16 20060101
F01P007/16 |
Foreign Application Data
Date |
Code |
Application Number |
Aug 28, 2013 |
IN |
2811/MUM/2013 |
Claims
1. A sensor housing comprising: a body defining an enclosure
adapted to receive fluid; at least one receiver configured on said
body and adapted to receive and hold at least one sensor that is
adapted to determine at least one pre-determined property
associated with fluid directed thereto as said fluid comes in
contact with said at least one sensor; at least one fluid flow
director member configured on at least one internal wall of said
enclosure and adapted to define flow path of said fluid through
said enclosure so as to direct said fluid to said at least one
sensor and facilitate sufficient contact between fluid and said at
least one sensor to ensure precise sensing of said at least one
pre-determined property associated with said fluid by said at least
one sensor; and at least one fluid retainer member configured on
said body and disposed around said at least one sensor and adapted
to prevent bypassing of said at least one sensor by the fluid and
retain said fluid in contact with said at least one sensor for a
pre-determined time to ensure precise sensing of said at least one
pre-determined property associated with the fluid by said at least
one sensor.
2. (canceled)
3. The sensor housing as claimed in claim 1, wherein said at least
one sensor is selected from a group consisting of pH sensor,
concentration sensor and temperature sensor.
4. The sensor housing as claimed in claim 1, wherein said at least
one fluid flow director member is a profiled by-pass gallery
configured on said at least one internal wall of said
enclosure.
5. The sensor housing as claimed in claim 1, wherein said at least
one fluid flow director member is a flap disposed on said at least
one internal wall of said enclosure.
6. (canceled)
7. (canceled)
8. A housing for a thermostat of a cooling arrangement for an
engine of a vehicle, said housing comprising: a body defining an
enclosure adapted to receive coolant fluid of the cooling
arrangement after said coolant fluid has extracted heat from the
engine, said enclosure is in fluid communication with a pump that
pumps said coolant fluid to a sink of the cooling arrangement for
dissipating heat extracted by said coolant fluid from the engine; a
receiver cavity configured on said body and adapted to receive and
hold the thermostat that is adapted to determine temperature of
coolant fluid directed thereto as said coolant fluid comes in
contact with the thermostat; at least one fluid flow director
member configured on at least one internal wall of said enclosure
and adapted to define flow path of said coolant fluid through said
enclosure so as to direct coolant fluid to said thermostat and
facilitate sufficient contact between said coolant fluid and said
thermostat to ensure precise sensing of temperature of coolant
fluid by the thermostat; and at least one fluid retainer member
configured on said body and disposed around said thermostat and
adapted to prevent said coolant fluid from directly reaching
suction of said pump by bypassing of said thermostat, thereby
retaining said coolant fluid in contact with said thermostat for a
pre-determined time to ensure precise sensing of temperature of
coolant fluid by said thermostat.
9. The sensor housing as claimed in claim 8, wherein said at least
one fluid retainer member is a flow balancer rib that is configured
on a valve rest face of thermostat and disposed around said
thermostat.
10. The sensor housing as claimed in claim 9, wherein said flow
balancer rib is adapted to balance coolant flow to said pump and
said thermostat.
Description
FIELD OF DISCLOSURE
[0001] The present disclosure relates to a cooling arrangement.
More particularly, the present disclosure relates to thermostat
housing for a thermostat used for detecting temperature of engine
coolant used in an engine cooling arrangement.
BACKGROUND
[0002] An engine cooling system includes a coolant flow passage
formed around a cylinder block of an engine for extracting heat
generated in the engine during operation of the engine. The heated
coolant is then circulated to a radiator with the help of a pump
for dissipating the extracted heat, wherein the heated coolant is
cooled down by air-flow and the cooled coolant is circulated back
to the coolant flow passage to repeat the cycle of heat extraction
from the engine. The flow of engine coolant to the radiator is
governed based on temperature of the engine coolant detected by a
thermostat. The thermostat should accurately detect the temperature
of the engine coolant and allow or by-pass coolant flow to the
radiator. Conventionally, inlet controlled thermostats are used,
wherein based on the temperature of the engine coolant detected by
the thermostat, the coolant from cylinder block is by-passed from a
pump directing coolant to the radiator during engine warm up
condition. Once the engine coolant is heated to a pre-determined
temperature, based on temperature detected by the thermostat a
control valve is activated and the coolant is directed via the pump
that directs the coolant to the radiator. Accordingly, for
efficient operation of the engine cooling system it is necessary
that the thermostat accurately detects the temperature of the
engine coolant as the flow of coolant between the radiator and the
engine is controlled based on the coolant temperature detected by
the thermostat. The accuracy of the thermostat depends upon
configuration of the thermostat housing that should facilitate
sufficient contact between the coolant and the thermostat,
particularly, the thermostat housing should enhance coolant flow
over the thermostat. A variety of thermostat housing having
different configuration are known in the prior art
[0003] For example, the US Published Patent Application,
US2012312884 discloses a thermostat device. The thermostat device
is provided with a casing (2) which comprises a first coolant flow
path (2B), a second coolant path (2D), and a thermostat
accommodating part communicating with the first and second coolant
flow paths, a cover (3) which comprises a third coolant flow path
(2C) communicating with the thermostat accommodating part and
covers the thermostat accommodating part, and a thermostat (10)
which comprises a thermo-element (10h) that moves forward and
backward according to the change of the temperature of a coolant
flowing through the thermostat accommodating part. The thermostat
device is provided with a temperature sensor (20) which is provided
to face the inside of the thermostat accommodating part and detects
the temperature of the coolant. A sensor mounting part (21) which
is provided with the temperature sensor therein is provided
integrally at the inner end of the cover, and a lead connecting
part (25) which is drawn to the outside from the temperature sensor
is provided integrally at the outer end of the cover.
[0004] The U.S. Pat. No. 5,410,991 discloses coolant fill housing
with integral thermostat. The apparatus includes a fill housing
having an inlet section, an outlet section and a fill section
configured to receive a cap thereon. The inlet section is formed to
include a valve seat and a flange for coupling the fill housing to
an engine. The apparatus also includes a thermostat and means for
coupling the thermostat to the flange to hold the thermostat within
the inlet section beneath an outer surface of the flange. The fill
housing is formed to include a venturi portion located between the
inlet section and the outlet section to provide a pressure drop in
the fill housing as fluid flows through the fill housing. The
venturi portion is located adjacent the fill section to subject the
fill section to the pressure drop as fluid flows through the fill
housing.
[0005] The WIPO Published Patent Application WO2012072654 discloses
a thermostat valve (1) for a cooling system of an internal
combustion engine with a coolant stoppage function. The thermostat
valve (1) for the cooling system includes a first bypass valve
element (31) and a second bypass valve element (6), a main valve
element (30) to be arranged in a counterpart (2) to a connection
(22) to a coolant radiator, and a cross-member (4) to be arranged
between an engine outlet (21) and an engine inlet (20), which
cross-member (4) forms a valve seat for the first bypass valve
element (31) and the second bypass valve element (6), wherein, on
its outer side, the cross-member (4) has a collar (41) which forms
an axial supporting region for the counterpart (2) and which is
loaded in the axial direction (I) by a compression spring (7), with
the result that the collar (41) is forced in the direction of the
counterpart (2).
[0006] The U.S. Pat. No. 4,653,688 discloses a choke type
thermostat. The choke-type thermostat is provided with a bypass
valve. The inventive thermostat has a pliable valve member which
prevents flow to an engine coolant bypass when the thermostat is in
the completely open position in regards to an engine radiator
outlet. Valving of the engine coolant bypass provides maximum flow
to the radiator outlet when the thermostat is in the open position.
Since the engine bypass is valved off by the thermostat when the
thermostat is in the open position the diameter of the engine
coolant bypass may be increased therefore allowing increased flow
there-through when the thermostat is in a closed position.
[0007] The U.S. Pat. No. 6,364,213 discloses an integrated fluid
recovery reservoir and thermostat assembly. The integrated fluid
recovery reservoir and thermostat assembly includes a coolant
reservoir housing 26 which is mounted directly to the engine 14 and
which includes inlet ports 28, 30 for receiving coolant 38 from
engine 14 and an outlet flow portion or module 46 which is fluidly
coupled to the radiator 18. The assembly 10 further includes a flow
control module and thermostat assembly 42 which is attached to the
reservoir housing 26 and which selectively and fluidly communicates
with the reservoir housing 26, with the coolant pump 20 and with
the radiator 18. A thermostat valve 72 is attached to and/or within
assembly 42 and cooperates with assembly 42 to selectively control
the flow of the coolant 38 through the engine cooling system 10.
The thermostat 72 is integrated within a fill cap 54, which allows
the system 10 to be easily filled with coolant and allows the
thermostat 72 to be easily serviced or replaced.
[0008] However, none of the above mentioned prior art documents
disclose any provision for profiling the flow-paths of the
thermostat housing for modifying flow-path line of the coolant for
facilitating sufficient contact between the coolant and the
thermostat. Further, none of the above mentioned prior art
documents disclose any provision for achieving coolant flow
restriction for facilitating sufficient contact between the coolant
and the thermostat.
[0009] Accordingly, there is a need for thermostat housing for use
in a cooling arrangement that facilitate sufficient contact between
the coolant and the thermostat by enhancing coolant flow over the
thermostat, thereby improving accuracy of the thermostat in sensing
coolant temperature and resulting in efficient operation of the
engine cooling system. Still further, there is a need for
thermostat housing for an engine cooling arrangement that improves
coolant flow path around the thermostat, thereby enhancing accuracy
of the thermostat and resulting in accurate functioning of the
engine cooling arrangement. Still further, there is a need for
thermostat housing that provides better controllability of the
engine coolant flow between the radiator and the engine and engine
coolant temperature, thereby permitting engine operation even at
higher coolant temperatures and resulting in less CO.sub.2
emissions.
OBJECTS
[0010] Some of the objects of the present disclosure are described
herein below:
[0011] It is an object of the present disclosure to ameliorate one
or more problems of the prior art or to at least provide a useful
alternative.
[0012] An object of the present disclosure is to provide thermostat
housing for use in a cooling arrangement that facilitate sufficient
contact between the coolant and the thermostat by enhancing coolant
flow over the thermostat, thereby improving accuracy of the
thermostat in detecting coolant temperature.
[0013] Another object of the present disclosure is to provide
thermostat housing for use in a cooling arrangement that
facilitates sufficient contact between the coolant and the
thermostat, thereby resulting in efficient operation of the engine
cooling system.
[0014] Still another object of the present disclosure is to provide
thermostat housing that improves coolant flow path around the
thermostat, thereby enhancing the accuracy of the thermostat which
shall help to avoid the overheating of engine components, thereby
leading to improved reliability.
[0015] Yet another object of the present disclosure is to provide
thermostat housing that provides better controllability of the
engine coolant flow and engine coolant temperature, thereby
permitting engine operation even at higher coolant temperatures and
resulting in less CO.sub.2 emissions.
SUMMARY
[0016] A sensor housing is disclosed in accordance with an
embodiment of the present disclosure. The sensor housing includes a
body, at least one receiver, at least one fluid flow director
member, at least one fluid retainer member. The body defines an
enclosure that receives fluid. The at least one receiver is
configured on the body and receives and holds at least one sensor
that determines at least one pre-determined property associated
with fluid directed thereto as the fluid comes in contact with the
at least one sensor. The at least one fluid flow director member is
configured on at least one internal wall of the enclosure and
defines flow path of the fluid through the enclosure so as to
direct the fluid to the at least one sensor and facilitate
sufficient contact between fluid and the at least one sensor to
ensure precise sensing of the at least one pre-determined property
associated with the fluid by the at least one sensor.
[0017] In accordance with another embodiment of the present
disclosure a housing for a thermostat of a cooling arrangement for
an engine of a vehicle is disclosed. The housing includes a body, a
receiver cavity, at least one fluid flow director member and at
least one fluid retainer member. The body defines an enclosure that
receives coolant fluid of the cooling arrangement after the coolant
fluid has extracted heat from the engine. The enclosure is in fluid
communication with a pump that pumps the coolant fluid to a sink of
the cooling arrangement for dissipating heat extracted by the
coolant fluid from the engine. The receiver cavity is configured on
the body and receives and holds the thermostat that determines
temperature of coolant fluid directed thereto as the coolant fluid
comes in contact with the thermostat. The at least one fluid flow
director member is configured on at least one internal wall of the
enclosure and defines flow path of the coolant fluid through the
enclosure so as to direct coolant fluid to the thermostat and
facilitate sufficient contact between coolant fluid and the
thermostat to ensure precise sensing of temperature of coolant
fluid by the thermostat. The at least one fluid retainer member is
configured on the body and is disposed around the thermostat and
prevents the coolant fluid from directly reaching suction of the
pump by bypassing of the thermostat, thereby retaining the coolant
fluid in contact with the thermostat for a pre-determined time to
ensure precise sensing of temperature of coolant fluid by the
thermostat. Typically, the at least one sensor is selected from a
group consisting of pH sensor, concentration sensor and temperature
sensor.
[0018] Specifically, the at least one fluid flow director member is
a profiled by-pass gallery configured on the at least one internal
wall of the enclosure.
[0019] Alternatively, the at least one fluid flow director member
is a flap configured on the at least one internal wall of the
enclosure.
[0020] Typically, the at least one fluid retainer member is a flow
balancer rib that is configured on a valve rest face of thermostat
and is disposed around the thermostat.
[0021] Generally, the flow balancer rib balances coolant flow to
the pump and the thermostat.
BRIEF DESCRIPTION
[0022] The objects and features of the present disclosure will be
more clearly understood from the following description of the
disclosure taken in conjunction with the accompanying drawings, in
which,
[0023] FIG. 1 illustrates a schematic representation of
conventional thermostat housing without any provision for ensuring
sufficient contact between the coolant and the thermostat,
particularly, conventional thermostat housing without any profiling
and flow balancer ribs in accordance with the prior art;
[0024] FIG. 2 illustrates a schematic representation of thermostat
housing with provision for ensuring sufficient contact between the
coolant and the thermostat, particularly, thermostat housing with
profiled coolant by-pass gallery and flow balancer ribs in
accordance with an embodiment of the present disclosure;
[0025] FIG. 3 illustrates a schematic representation of simulation
of flow path lines depicting coolant flow through the thermostat
housing of FIG. 2;
[0026] FIG. 4 illustrates a 3-D representation of the profiled
coolant by-pass gallery configured on the thermostat housing for
enhancing contact between the coolant and the thermostat;
[0027] FIG. 5a illustrates a 3-D representation of a flow balancer
rib configured on the thermostat housing for enhancing contact
between the coolant and the thermostat; and
[0028] FIG. 5b illustrates another view of the flow balancer rib of
FIG. 5a.
DETAILED DESCRIPTION
[0029] The disclosure will now be described with reference to the
accompanying drawings which do not limit the scope and ambit of the
disclosure. The description provided is purely by way of example
and illustration.
[0030] The embodiments herein and the various features and
advantageous details thereof are explained with reference to the
non-limiting embodiments in the following description. Descriptions
of well-known components and processing techniques are omitted so
as to not unnecessarily obscure the embodiments herein. The
examples used herein are intended merely to facilitate an
understanding of ways in which the embodiments herein may be
practiced and to further enable those of skill in the art to
practice the embodiments herein. Accordingly, the examples should
not be construed as limiting the scope of the embodiments
herein.
[0031] The foregoing description of the specific embodiments will
so fully reveal the general nature of the embodiments herein that
others can, by applying current knowledge, readily modify and/or
adapt for various applications such specific embodiments without
departing from the generic concept, and, therefore, such
adaptations and modifications should and are intended to be
comprehended within the meaning and range of equivalents of the
disclosed embodiments. It is to be understood that the phraseology
or terminology employed herein is for the purpose of description
and not of limitation. Therefore, while the embodiments herein have
been described in terms of preferred embodiments, those skilled in
the art will recognize that the embodiments herein can be practiced
with modification within the spirit and scope of the embodiments as
described herein.
[0032] The present disclosure envisages thermostat housing for a
thermostat used for detecting temperature of engine coolant used in
an engine cooling arrangement. More specifically, the thermostat
housing enhances contact between the coolant and the thermostat by
enhancing bypass coolant flow over the thermostat, thereby
improving accuracy of the thermostat in detecting coolant
temperature for efficient operation of the engine cooling system.
The thermostat housing also provides better controllability of the
engine coolant flow and engine coolant temperature, thereby
permitting engine operation even at higher coolant temperatures and
resulting in less CO.sub.2 emissions.
[0033] FIG. 1 illustrates a schematic representation of
conventional thermostat housing 10 without any provision for
enhancing contact between the coolant and the thermostat,
particularly, conventional thermostat housing 10 without any
profiling and flow balancer ribs for improving coolant flow over
the thermostat. In absence of proper provisions for enhancing
contact between the coolant and the thermostat, the thermostat
fails to accurately detect the temperature of the engine coolant
and as such the flow of coolant between the radiator and the engine
is not controlled accurately. Accordingly the engine cooling system
fails to achieve efficient cooling of the engine and the engine
requires frequent maintenance. Further inefficient cooling of the
engine may ultimately cause failure of the engine and the service
life of the engine is drastically reduced. Accordingly for
efficient operation of the engine cooling system it is necessary
that the thermostat accurately detects the temperature of the
engine coolant and the flow of coolant between the radiator and the
engine is controlled. For achieving accurate detection of the
temperature of the engine coolant by the thermostat it is necessary
that there is sufficient contact between the coolant and the
thermostat that can be attained by providing provisions for
efficient flow of coolant over the thermostat in the thermostat
housing. Further, with such configuration of conventional
thermostat housing 10, the thermostats are disposed near the
radiator and isolated from the engine. Still further, with such
configuration of conventional thermostat housing 10, there is delay
in thermostat opening and complete blockage of coolant flow from
the radiator, thereby resulting in engine seizure due to
overheating.
[0034] A sensor housing is disclosed in accordance with an
embodiment of the present disclosure. The sensor housing includes a
body, at least one receiver, at least one fluid flow director
member, at least one fluid retainer member. The body defines an
enclosure that receives fluid. The at least one receiver is
configured on the body and receives and holds at least one sensor
that determines at least one pre-determined property associated
with fluid directed thereto as the fluid comes in contact with the
at least one sensor. The at least one fluid flow director member is
configured on at least one internal wall of the enclosure and
defines flow path of the fluid through the enclosure so as to
direct the fluid to the at least one sensor and facilitate
sufficient contact between fluid and the at least one sensor to
ensure precise sensing of the at least one pre-determined property
associated with the fluid by the at least one sensor.
[0035] FIG. 2 illustrates a schematic representation of a
thermostat housing 20 with provision for enhancing contact between
the coolant and the thermostat, particularly, the thermostat
housing 20 is provided with at least one fluid flow director
member, particularly, at least one profiled coolant by-pass gallery
12 and at least one fluid retainer member, particularly at least
one flow balancer ribs 14 configured in the thermostat housing 20
for enhancing coolant flow over the thermostat, improving accuracy
of the thermostat in detecting coolant temperature for achieving
efficient operation of the engine cooling system. In accordance
with an embodiment of the present disclosure the thermostat housing
20 for a thermostat of a cooling arrangement for an engine of a
vehicle is disclosed. The thermostat housing 20 includes a body
"B", a receiver cavity "C", the at least one fluid flow director
member, particularly, the at least one profiled coolant by-pass
gallery 12 and at least one fluid retainer member, particularly, at
least one flow balancer ribs 14. The body "B" defines an enclosure
that receives coolant fluid of the cooling arrangement after the
coolant fluid has extracted heat from the engine (not illustrated).
The enclosure is in fluid communication with a pump (not
illustrated) that pumps the coolant fluid to a sink, particularly,
a radiator (not illustrated) of the cooling arrangement for
dissipating heat extracted by the coolant fluid from the engine.
The receiver cavity "C" is configured on the body and receives and
holds the thermostat "T" that determines temperature of coolant
fluid directed thereto as the coolant fluid comes in contact with
the thermostat "T". The at least one fluid flow director member,
particularly, the at least one profiled coolant by-pass gallery 12
is configured on at least one internal wall of the enclosure and
defines flow path of the coolant fluid through the enclosure so as
to direct coolant fluid to the thermostat "T" and facilitates
sufficient contact between coolant fluid and the thermostat "T" to
ensure precise sensing of temperature of coolant fluid by the
thermostat "T". The at least one fluid retainer member,
particularly, at least one flow balancer ribs 14 is configured on
the body "B" and is disposed around the thermostat "T" and prevents
the coolant fluid from directly reaching suction of the pump by
bypassing of the thermostat "T", thereby retaining the coolant
fluid in contact with the thermostat "T" for a pre-determined time
to ensure precise sensing of temperature of coolant fluid by the
thermostat "T".
[0036] Particularly, the coolant by-pass gallery 12 modifies the
flow path of the coolant flowing through the thermostat housing 20
for better contact of the coolant with the thermostat and better
cooling of the thermostat. FIG. 3 illustrates a schematic
representation of simulation of flow path lines 16 depicting
coolant flow through the thermostat housing 20. FIG. 4 illustrates
a 3-D representation of the profiled coolant by-pass gallery 12
configured on the thermostat housing 20 for enhancing contact
between the coolant and the thermostat, wherein the profiling 12a
configured on the housing improves the flow of the coolant over the
thermostat. Further, referring to FIG. 4, the coolant by-pass flow
from the engine block is along direction "A" illustrated in FIG. 2
and FIG. 4. Referring to FIG. 4, due to the configuration of the
rib 14, the rib 14 acts as an obstruction and the coolant flow path
is directed back to the thermostat "T" and the coolant is
maintained in contact with the thermostat "T" for a longer period
of time, thereby ensuring precise sensing of temperature of coolant
fluid by the thermostat "T". With such a configuration of the
coolant by-pass gallery 12 configured on the thermostat housing 20,
the mass flow fraction of the coolant passing over the thermostat
is increased, thereby improving accuracy of the thermostat.
[0037] Further, the thermostat housing 20 also includes at least
one flow balancer ribs 14 configured in the thermostat housing 20
for enhancing coolant flow over the thermostat, thereby further
improving the accuracy of the thermostat in detecting coolant
temperature for achieving efficient operation of the engine cooling
system. FIG. 5a illustrates a 3-D representation of a flow balancer
rib 14 configured on the thermostat housing 20 for ensuring
sufficient contact between the coolant and the thermostat. FIG. 5b
illustrates another view of the flow balancer rib 14. As
illustrated in Figures, the flow balancer rib 14 is configured on
the valve rest face of the thermostat and restricts the coolant
flow passing directly to the suction of the coolant pump,
accordingly, fraction of coolant flow passing to the coolant pump
and the thermostat is balanced, thereby ensuring higher coolant
flow over the thermostat and better controllability of the engine
coolant flow and the engine coolant temperature.
TECHNICAL ADVANCEMENTS
[0038] The thermostat housing in accordance with the present
disclosure has several technical advantages including but not
limited to the realization of [0039] thermostat housing for use in
a cooling arrangement that facilitate sufficient contact between
the coolant and the thermostat by enhancing coolant flow over the
thermostat, thereby improving accuracy of the thermostat in
detecting coolant temperature; [0040] thermostat housing for use in
a cooling arrangement that facilitates sufficient contact between
the coolant and the thermostat, thereby resulting in efficient
operation of the engine cooling system; [0041] thermostat housing
that improves coolant flow path around the thermostat, thereby
enhancing the accuracy of the thermostat that results into improved
reliability of engine components; and [0042] thermostat housing
that provides better controllability of the engine coolant flow and
the engine coolant temperature, thereby permitting engine operation
even at higher coolant temperatures and resulting in less CO.sub.2
emissions.
[0043] Throughout this specification the word "comprise", or
variations such as "comprises" or "comprising", will be understood
to imply the inclusion of a stated element, integer or step, or
group of elements, integers or steps, but not the exclusion of any
other element, integer or step, or group of elements, integers or
steps.
[0044] The use of the expression "at least" or "at least one"
suggests the use of one or more elements or ingredients or
quantities, as the use may be in the embodiment of the disclosure
to achieve one or more of the desired objects or results.
[0045] Any discussion of documents, acts, materials, devices,
articles or the like that has been included in this specification
is solely for the purpose of providing a context for the
disclosure. It is not to be taken as an admission that any or all
of these matters form a part of the prior art base or were common
general knowledge in the field relevant to the disclosure as it
existed anywhere before the priority date of this application.
[0046] The numerical values mentioned for the various physical
parameters, dimensions or quantities are only approximations and it
is envisaged that the values higher/lower than the numerical values
assigned to the parameters, dimensions or quantities fall within
the scope of the disclosure, unless there is a statement in the
specification specific to the contrary.
[0047] While considerable emphasis has been placed herein on the
components and component parts of the preferred embodiments, it
will be appreciated that many embodiments can be made and that many
changes can be made in the preferred embodiments without departing
from the principles of the disclosure. These and other changes in
the preferred embodiment as well as other embodiments of the
disclosure will be apparent to those skilled in the art from the
disclosure herein, whereby it is to be distinctly understood that
the foregoing descriptive matter is to be interpreted merely as
illustrative of the disclosure and not as a limitation.
* * * * *