EP1404950A1 - Cooling system for a motor vehicle engine - Google Patents

Cooling system for a motor vehicle engine

Info

Publication number
EP1404950A1
EP1404950A1 EP02735601A EP02735601A EP1404950A1 EP 1404950 A1 EP1404950 A1 EP 1404950A1 EP 02735601 A EP02735601 A EP 02735601A EP 02735601 A EP02735601 A EP 02735601A EP 1404950 A1 EP1404950 A1 EP 1404950A1
Authority
EP
European Patent Office
Prior art keywords
pump
engine
valve
coolant
outlet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP02735601A
Other languages
German (de)
French (fr)
Other versions
EP1404950B1 (en
Inventor
Ian Graham Pegg
Leslie Williams Routledge
Richard Durnford
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ford Global Technologies LLC
Original Assignee
Ford Global Technologies LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ford Global Technologies LLC filed Critical Ford Global Technologies LLC
Publication of EP1404950A1 publication Critical patent/EP1404950A1/en
Application granted granted Critical
Publication of EP1404950B1 publication Critical patent/EP1404950B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
    • F01P7/167—Controlling of coolant flow the coolant being liquid by thermostatic control by adjusting the pre-set temperature according to engine parameters, e.g. engine load, engine speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0005—Control, e.g. regulation, of pumps, pumping installations or systems by using valves
    • F04D15/0022—Control, e.g. regulation, of pumps, pumping installations or systems by using valves throttling valves or valves varying the pump inlet opening or the outlet opening
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P2007/146—Controlling of coolant flow the coolant being liquid using valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2025/00—Measuring
    • F01P2025/08—Temperature
    • F01P2025/13—Ambient temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2025/00—Measuring
    • F01P2025/08—Temperature
    • F01P2025/32—Engine outcoming fluid temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2025/00—Measuring
    • F01P2025/08—Temperature
    • F01P2025/33—Cylinder head temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2025/00—Measuring
    • F01P2025/60—Operating parameters
    • F01P2025/62—Load
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2025/00—Measuring
    • F01P2025/60—Operating parameters
    • F01P2025/64—Number of revolutions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2025/00—Measuring
    • F01P2025/60—Operating parameters
    • F01P2025/66—Vehicle speed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2070/00—Details
    • F01P2070/06—Using intake pressure as actuating fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
    • F01P5/12—Pump-driving arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
    • F01P7/161—Controlling of coolant flow the coolant being liquid by thermostatic control by bypassing pumps

Definitions

  • This invention relates to cooling systems for internal combustion engines, particularly for motor vehicles .
  • a typical automobile engine cooling system includes an engine coolant jacket, a radiator, a fan for drawing air through the radiator, a circulatory pump for circulating the coolant from the engine through the radiator and return .
  • Such a system typically includes a thermostat which opens to allow the circulation of the coolant when the engine reaches a minimum desired operating temperature.
  • the coolant flow is driven conventionally by a pump rotated by a belt driven by the crankshaft pulley and the flow rate is dependant upon engine speed.
  • US-A-5 975 031 discloses a cooling system having a pump with an electrically driven motor the speed of which is varied with engine temperature.
  • the system in US-A-5 975 031 also includes a radiator by-pass duct and discloses the use of a control valve upstream of the pump to control the ratio of the flows of water entering the pump from both the by-pass duct and radiator.
  • US-A-6 032 618 discloses a cooling system in which a control valve located upstream of the pump controls the flow of water through the system dependant upon signals received from an electronic control .
  • the present invention provides a means of controlling the engine cooling system which is suitable for engine driven coolant pumps .
  • an internal combustion engine coolant pump having an inlet for receiving coolant from a radiator or other coolant circuit and outlet directing coolant to the engine, the outlet having a flow restricting valve therein operable to vary the output from the pump.
  • the flow restricting valve in the outlet of the pump creates a restriction at the outlet which has advantages in that cavitation at the inlet is not made worse and .any increase in pressure due to the restriction is seen only in the pump and not in the rest of the coolant system.
  • Increasing the flow restriction at the outlet of an impellor type pump reduces its power consumption giving a direct reduction in fuel consumption.
  • the flow restricting valve may be provided with an actuator, preferably a vacuum operated actuator which operates from a vacuum source on the vehicle, e.g. a vacuum pump or the engine inlet manifold pressure.
  • the flow restricting valve may also be provided with a sensor which monitors the control position of the valve.
  • the pump could be an electrically driven impeller pump, but is preferably a mechanically driven impeller pump having a pulley wheel fixed to the pump shaft and driven by a suitable means e.g. endless belt, chain etc., connected to a pulley wheel fixed to the engine crankshaft.
  • the system drive losses as compared with an electrically driven pump are lower. With a typical electrically driven pump the vehicle alternator must be upgraded and system losses are such the power consumed to drive the coolant pump is about 120% higher than for the engine driven pump.
  • the invention also relates to engine cooling systems that include the above type of pump.
  • Yet another aspect of the invention relates to a motor vehicle internal combustion engine cooling system having a liquid coolant pump having an inlet for receiving coolant from a radiator and outlet passing coolant to the engine, and a flow restricting valve operable to vary the volume output from the pump.
  • the pump may be a separate unit mounted on the engine or a pump which is incorporated with its impeller located in the engine coolant jacket.
  • the system may further includes a control module for operation of the restricting valve, the module being connected to a plurality of sensors for monitoring a plurality of engine conditions, and preferably vehicle passenger compartment conditions .
  • Yet another aspect of the invention provides a method of controlling the flow of cooling fluid through the cooling system of an internal combustion engine, the system includes a circulatory pump, wherein the pump output is controlled by a flow restricting valve located at. the pump outle .
  • the restricting valve may be located in the pump outlet or adjacent thereto.
  • Fig. 1 is a schematic drawing of an vehicle engine with an external coolant pump
  • Fig. 2 is a schematic drawing of coolant pump according to the present invention.
  • Fig. 3 is a flow diagram of a control for the restricting valve in the pump of Fig. 2.
  • FIG. 1 there is shown an internal combustion engine 11 having a cooling jacket through which a liquid coolant, typically a water/glycol mix, is pumped.
  • the coolant is pumped through the engine 11 by a pump 12 mounted externally of the engine and which is rotated by an endless belt 13 driven by a pulley 14 conventionally secured to the engine crankshaft.
  • the coolant enters the pump inlet 15 from a radiator (see Fig. 3) and is pumped through pump outlet 16 into the engine 11 via conduit 17.
  • the coolant exits the engine via a thermostatically, regulated control valve or valves 18.
  • the pump 12 is an impeller pump and the impeller shaft 21 is rotated by a pulley wheel 22 (see Fig. 1) driven by the belt 13 in a well known manner.
  • the coolant flow from the pump passes through a volume flow regulating or restricting valve 23 which may be of any suitable type, for example a ball valve, or plate valve, which causes minimum flow restriction when fully open.
  • the valve 23 may be enclosed in a separate housing which is mounted to the pump outlet 16 to form a single assembly, but preferably the valve is housed within the pump outlet 16 forming a single unit.
  • the valve 23 is operated by an actuator 24 which again may be of any .. suitable type, for example hydraulic,, electrical, or preferably a vacuum actuator which operate by a vacuum source on the vehicle.
  • the actuator 24 is biased to a valve open condition so that the valve 23 restricts coolant flow only when the actuator is energised, and is open in the case of actuator failure.
  • the valve condition is monitored by a sensor 25.
  • a cooling system which includes the pump 12.
  • the liquid coolant is pumped into the engine 11 and the heated coolant exits the engine through outlet 18 and passes to a radiator 31 and typically to a heat exchanger 32 for heating the vehicle passenger compartment.
  • the coolant then returns to the engine 11 via the pump 12.
  • a cooling fan 33 is arranged to draw cooling air through the radiator 31. . ..
  • the valve actuator 24 is operated by a valve control 34 which receives control signals from a cooling system control module 35.
  • the control module 35 receives input signals from a plurality of different sources .
  • the module . 35 receives a valve condition signal from sensor 25 to complete the control loop for the restricting valve 23, but the actual valve condition will be determined in response to other engine condition signals and to parameters which my be programmed into an engine map.
  • the sensors may be divided into three types, vehicle parameter 36, power train parameters 37, and heating and cooling parameters 38.
  • the vehicle parameter sensors 36 may include torque demand sensor e.g. accelerator pedal position, gear, speed and ignition key status .
  • the power train sensors 37 may include sensors for engine air intake temperature, cylinder head metal body temperature, engine coolant outlet temperature, engine speed, engine air flow, and engine fuel demand.
  • the heating and cooling sensors may include ambient air temperature, ambient pressure, air conditioning, passenger compartment temperature settings and fan control settings, and radiator fan status .
  • the control module 35 processes the input signals from the various sensors and determined the optimum engine temperature in accordance with the pre-programmed engine map.
  • the valve actuator 24 is then activated to increase or decrease the flow through the valve 23 dependant upon the relationship between the required engine metal temperature and actual engine metal temperature and/or coolant flow rate required.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

An internal combustion engine coolant pump (12) having an inlet (15) for receiving coolant from the cooling circuit (31, 32) and an outlet (16) directing coolant to an engine (11) provided with a thermostat (18). The outlet (16) has a flow restricting valve (23) therein operable to vary the volume output from the pump (12). The valve (23) is operated through a control actuator (24) responsive to various engine conditions.

Description

Cooling System for a Motor Vehicle Engine
Field
This invention relates to cooling systems for internal combustion engines, particularly for motor vehicles .
Background of the Invention
A typical automobile engine cooling system includes an engine coolant jacket, a radiator, a fan for drawing air through the radiator, a circulatory pump for circulating the coolant from the engine through the radiator and return .
Such a system typically includes a thermostat which opens to allow the circulation of the coolant when the engine reaches a minimum desired operating temperature. The coolant flow is driven conventionally by a pump rotated by a belt driven by the crankshaft pulley and the flow rate is dependant upon engine speed.
In order to improve engine efficiency different means have been utilised to enable the engine to operate at as higher temperature as is possible. For example in US-A-4 744 335, the engine is provided with a servo controlled flow valve at its coolant outlet. US-A-5 975 031 discloses a cooling system having a pump with an electrically driven motor the speed of which is varied with engine temperature. The system in US-A-5 975 031 also includes a radiator by-pass duct and discloses the use of a control valve upstream of the pump to control the ratio of the flows of water entering the pump from both the by-pass duct and radiator. US-A-6 032 618 discloses a cooling system in which a control valve located upstream of the pump controls the flow of water through the system dependant upon signals received from an electronic control .
The present invention provides a means of controlling the engine cooling system which is suitable for engine driven coolant pumps .
Statements of Invention
According to the present invention there is provided ■ an internal combustion engine coolant pump having an inlet for receiving coolant from a radiator or other coolant circuit and outlet directing coolant to the engine, the outlet having a flow restricting valve therein operable to vary the output from the pump.
The flow restricting valve in the outlet of the pump creates a restriction at the outlet which has advantages in that cavitation at the inlet is not made worse and .any increase in pressure due to the restriction is seen only in the pump and not in the rest of the coolant system. Increasing the flow restriction at the outlet of an impellor type pump reduces its power consumption giving a direct reduction in fuel consumption. The flow restricting valve may be provided with an actuator, preferably a vacuum operated actuator which operates from a vacuum source on the vehicle, e.g. a vacuum pump or the engine inlet manifold pressure. The flow restricting valve may also be provided with a sensor which monitors the control position of the valve.
The pump could be an electrically driven impeller pump, but is preferably a mechanically driven impeller pump having a pulley wheel fixed to the pump shaft and driven by a suitable means e.g. endless belt, chain etc., connected to a pulley wheel fixed to the engine crankshaft. The system drive losses as compared with an electrically driven pump are lower. With a typical electrically driven pump the vehicle alternator must be upgraded and system losses are such the power consumed to drive the coolant pump is about 120% higher than for the engine driven pump.
The invention also relates to engine cooling systems that include the above type of pump.
Yet another aspect of the invention relates to a motor vehicle internal combustion engine cooling system having a liquid coolant pump having an inlet for receiving coolant from a radiator and outlet passing coolant to the engine, and a flow restricting valve operable to vary the volume output from the pump.
The pump may be a separate unit mounted on the engine or a pump which is incorporated with its impeller located in the engine coolant jacket.
The system may further includes a control module for operation of the restricting valve, the module being connected to a plurality of sensors for monitoring a plurality of engine conditions, and preferably vehicle passenger compartment conditions .
Yet another aspect of the invention provides a method of controlling the flow of cooling fluid through the cooling system of an internal combustion engine, the system includes a circulatory pump, wherein the pump output is controlled by a flow restricting valve located at. the pump outle .
The restricting valve may be located in the pump outlet or adjacent thereto.
Description of the Drawings
The invention will be described by way of example only and with reference to the accompanying drawings in which:
Fig. 1 is a schematic drawing of an vehicle engine with an external coolant pump,
Fig. 2 is a schematic drawing of coolant pump according to the present invention, and
Fig. 3 is a flow diagram of a control for the restricting valve in the pump of Fig. 2.
Detailed Description of the Invention
With reference to Fig. 1, there is shown an internal combustion engine 11 having a cooling jacket through which a liquid coolant, typically a water/glycol mix, is pumped. The coolant is pumped through the engine 11 by a pump 12 mounted externally of the engine and which is rotated by an endless belt 13 driven by a pulley 14 conventionally secured to the engine crankshaft. The coolant enters the pump inlet 15 from a radiator (see Fig. 3) and is pumped through pump outlet 16 into the engine 11 via conduit 17. The coolant exits the engine via a thermostatically, regulated control valve or valves 18.
With reference also to Fig. 2, the pump 12 is an impeller pump and the impeller shaft 21 is rotated by a pulley wheel 22 (see Fig. 1) driven by the belt 13 in a well known manner. The coolant flow from the pump passes through a volume flow regulating or restricting valve 23 which may be of any suitable type, for example a ball valve, or plate valve, which causes minimum flow restriction when fully open.
The valve 23 may be enclosed in a separate housing which is mounted to the pump outlet 16 to form a single assembly, but preferably the valve is housed within the pump outlet 16 forming a single unit.
The valve 23 is operated by an actuator 24 which again may be of any .. suitable type, for example hydraulic,, electrical, or preferably a vacuum actuator which operate by a vacuum source on the vehicle. The actuator 24 is biased to a valve open condition so that the valve 23 restricts coolant flow only when the actuator is energised, and is open in the case of actuator failure. The valve condition is monitored by a sensor 25.
Now with reference to Pig. 3 there is shown a cooling system which includes the pump 12. The liquid coolant is pumped into the engine 11 and the heated coolant exits the engine through outlet 18 and passes to a radiator 31 and typically to a heat exchanger 32 for heating the vehicle passenger compartment. The coolant then returns to the engine 11 via the pump 12.
A cooling fan 33 is arranged to draw cooling air through the radiator 31. . ..
The valve actuator 24 is operated by a valve control 34 which receives control signals from a cooling system control module 35. The control module 35 receives input signals from a plurality of different sources . The module . 35 receives a valve condition signal from sensor 25 to complete the control loop for the restricting valve 23, but the actual valve condition will be determined in response to other engine condition signals and to parameters which my be programmed into an engine map.
The sensors may be divided into three types, vehicle parameter 36, power train parameters 37, and heating and cooling parameters 38.
The vehicle parameter sensors 36 may include torque demand sensor e.g. accelerator pedal position, gear, speed and ignition key status .
The power train sensors 37 may include sensors for engine air intake temperature, cylinder head metal body temperature, engine coolant outlet temperature, engine speed, engine air flow, and engine fuel demand.
The heating and cooling sensors may include ambient air temperature, ambient pressure, air conditioning, passenger compartment temperature settings and fan control settings, and radiator fan status .
The above lists of sensors are by way of example only
The control module 35 processes the input signals from the various sensors and determined the optimum engine temperature in accordance with the pre-programmed engine map. The valve actuator 24 is then activated to increase or decrease the flow through the valve 23 dependant upon the relationship between the required engine metal temperature and actual engine metal temperature and/or coolant flow rate required.

Claims

Claims
1. An internal combustion engine coolant pump having an inlet for receiving coolant from the cooling circuit and an outlet directing coolant to the engine, characterised by the outlet (16) having a flow restricting valve (23) therein operable to vary the output from the pump ( 12) .
2. A pump as claimed in Claim 1 further including an actuator (24) to operate the valve.
3. A pump as claimed in Claim 2 characterised in that the actuator (24) is a vacuum operable actuator.
4. A pump as claimed in Claim any one of Claims 1 to 3 and further including a sensor (25) for sensing the restricted condition of the valve (23).
5. A pump as claimed in any one of Claims 1 to 4 characterised in that the pump (12) is an impeller pump.
6. A pump as claimed in Claim 5 characterised in that the impeller pump (12) is driven by mechanical means (13,14).
7. A pump as claimed in Claim 6 having an impeller shaf (21) with a pulley wheel (22) thereon which in use is driven by drive means (13) connected to the vehicle engine crankshaft (14) .
8. A motor vehicle internal combustion engine cooling system including a pump (12) as claimed in any one of Claims 1 to 7.
9. A motor vehicle internal combustion engine cooling system having a liquid coolant pump (12) with an inlet (15) for receiving coolant from a radiator (31) and an outlet (16) directing coolant to the engine (11)/ characterised in that the system further comprises a flow restricting valve (23) operable to vary the output from the pump (12) .
10. A system as claimed in Claim 8 or Claim 9 wherein the system further includes , a. control module (35) for operation of the restricting valve- (23), the module (3.5) being connected to an actuator (24) for operation of the valve (23), a valve position sensor (25), and plurality of others sensors (36-38) for monitoring a plurality of engine and vehicle conditions .
11. method of controlling the flow of cooling fluid through the cooling system of an internal combustion engine (11) which includes a circulatory pump (12) characterised in that the volume output of the pump (12) is controlled by a flow restricting valve (23) located at the pump outlet (16).
12. The method as claimed in Claim 11, wherein the restricting valve (23) is operated by a control module (35) which is responsive to signals received from a valve condition sensor (25) and a plurality of other sensors (36,37,38) which monitor a plurality of engine operating conditions .
EP02735601A 2001-07-05 2002-06-05 Cooling system for a motor vehicle engine Expired - Lifetime EP1404950B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB0116433 2001-07-05
GB0116433A GB0116433D0 (en) 2001-07-05 2001-07-05 Cooling system for a motor vehicle engine
PCT/GB2002/002604 WO2003004840A1 (en) 2001-07-05 2002-06-05 Cooling system for a motor vehicle engine

Publications (2)

Publication Number Publication Date
EP1404950A1 true EP1404950A1 (en) 2004-04-07
EP1404950B1 EP1404950B1 (en) 2004-11-24

Family

ID=9917969

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02735601A Expired - Lifetime EP1404950B1 (en) 2001-07-05 2002-06-05 Cooling system for a motor vehicle engine

Country Status (4)

Country Link
EP (1) EP1404950B1 (en)
DE (1) DE60202073T2 (en)
GB (2) GB0116433D0 (en)
WO (1) WO2003004840A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2420846B (en) 2004-12-04 2009-07-08 Ford Global Technologies Llc A cooling system for a motor vehicle engine
DE212009000182U1 (en) * 2009-06-19 2012-05-08 Industrie Saleri Italo S.P.A. Mechanical coolant pump, especially for vehicles
WO2011101019A1 (en) * 2010-02-16 2011-08-25 Pierburg Pump Technology Gmbh Mechanical coolant pump
TR201103681A2 (en) * 2011-04-15 2012-08-22 Ünlüaslan Faruk Switching system to prevent coolant circulation for internal combustion engines.

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2455173A2 (en) * 1977-03-16 1980-11-21 Sev Marchal Cooling system for engine - has radiator by=pass circuit for rapid warm up with thermostat valves controlling pump and electric fan
DE2841555A1 (en) * 1978-09-23 1980-04-03 Audi Nsu Auto Union Ag LIQUID-COOLED COMBUSTION ENGINE
DE3328028A1 (en) * 1982-08-20 1984-02-23 National Research Development Corp., London INTERNAL COMBUSTION ENGINE
US4744335A (en) 1987-08-03 1988-05-17 Chrysler Motors Corporation Servo type cooling system control
DE4033261C2 (en) * 1990-10-19 1995-06-08 Freudenberg Carl Fa Temperature controlled cooling circuit of an internal combustion engine
DE4117532A1 (en) * 1991-05-29 1992-12-03 Ingelheim Peter Graf Von Automatically controlled cooling system - is for wide speed range IC engine and has valve behind engine block to regulate coolant circulation
IT1291190B1 (en) 1997-03-13 1998-12-29 Gate Spa Cooling system for an internal combustion engine, particularly for motor vehicles
JP3891512B2 (en) * 1997-05-29 2007-03-14 日本サーモスタット株式会社 Cooling control device and cooling control method for internal combustion engine
DE19725216C1 (en) * 1997-06-15 1998-11-19 Daimler Benz Ag Device for driving units of an internal combustion engine
IT1293664B1 (en) * 1997-08-01 1999-03-08 C R F Societa Conosrtile Per A COOLING SYSTEM FOR INTERNAL COMBUSTION ENGINE OF VEHICLE
IT1293667B1 (en) 1997-08-01 1999-03-08 Fiat Ricerche COOLING SYSTEM FOR A MOTOR VEHICLE ENGINE.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO03004840A1 *

Also Published As

Publication number Publication date
EP1404950B1 (en) 2004-11-24
DE60202073D1 (en) 2004-12-30
GB0116433D0 (en) 2001-08-29
GB0212842D0 (en) 2002-07-17
DE60202073T2 (en) 2005-12-22
GB2377253A (en) 2003-01-08
WO2003004840A1 (en) 2003-01-16

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