US20120168138A1 - Integrated pump, coolant flow control and heat exchange device - Google Patents

Integrated pump, coolant flow control and heat exchange device Download PDF

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Publication number
US20120168138A1
US20120168138A1 US12/982,846 US98284610A US2012168138A1 US 20120168138 A1 US20120168138 A1 US 20120168138A1 US 98284610 A US98284610 A US 98284610A US 2012168138 A1 US2012168138 A1 US 2012168138A1
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US
United States
Prior art keywords
coolant
heat exchange
engine
valve body
body part
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.)
Abandoned
Application number
US12/982,846
Other languages
English (en)
Inventor
John W. Myers
Mark A. Bourcier
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.)
Hyundai Motor Co
Kia Corp
Hyundai America Technical Center Inc
Original Assignee
Hyundai Motor Co
Kia Motors Corp
Hyundai America Technical Center Inc
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 Hyundai Motor Co, Kia Motors Corp, Hyundai America Technical Center Inc filed Critical Hyundai Motor Co
Priority to US12/982,846 priority Critical patent/US20120168138A1/en
Priority to KR1020110034668A priority patent/KR101765578B1/ko
Priority to US13/338,657 priority patent/US8459389B2/en
Publication of US20120168138A1 publication Critical patent/US20120168138A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
    • F28F27/02—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus for controlling the distribution of heat-exchange media between different channels
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • 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
    • F01P3/00—Liquid cooling
    • F01P3/18—Arrangements or mounting of liquid-to-air heat-exchangers
    • 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
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B29/00—Engines characterised by provision for charging or scavenging not provided for in groups F02B25/00, F02B27/00 or F02B33/00 - F02B39/00; Details thereof
    • F02B29/04—Cooling of air intake supply
    • F02B29/045—Constructional details of the heat exchangers, e.g. pipes, plates, ribs, insulation, materials, or manufacturing and assembly
    • F02B29/0475—Constructional details of the heat exchangers, e.g. pipes, plates, ribs, insulation, materials, or manufacturing and assembly the intake air cooler being combined with another device, e.g. heater, valve, compressor, filter or EGR cooler, or being assembled on a special engine location
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
    • 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
    • F01P2050/00—Applications
    • F01P2050/24—Hybrid vehicles
    • 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
    • F01P2060/00—Cooling circuits using auxiliaries
    • F01P2060/04—Lubricant cooler
    • F01P2060/045—Lubricant cooler for transmissions
    • 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
    • F01P2060/00—Cooling circuits using auxiliaries
    • F01P2060/18—Heater
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the present invention generally relates to systems and devices for delivering a coolant to an engine of a vehicle, such as electric-powered vehicles and hybrid vehicles (e.g., vehicles powered by an electric motor(s) and/or an internal combustion engine). More particularly, the present invention relates to an integrated pump, coolant flow control and heat exchange device and systems embodying same and yet more particularly, to such an integrated pump, flow control and heat exchange device having the ability to simultaneously control flow paths and flow volume.
  • a vehicle includes an engine, a transmission, a unit heater, a radiator, a pump for delivering a coolant to the engine, and an engine control module.
  • a typical cooling system used in a vehicle includes three main flow circuits: an engine bypass circuit, a circuit including a unit heater, and a circuit including a radiator.
  • Coolant flow may be controlled by a simple traditional wax pellet fixed temperature thermostat or a more complex coolant control valve with a drive motor, which has been developed as a replacement to the traditional wax pellet type thermostat.
  • the coolant control valve changes coolant flow within circuits based on a signal from a vehicle engine control module unit which is derived from engine coolant temperature.
  • the coolant control valve reduces engine warm up time by blocking coolant flow at initial cold start and also allowing the engine (coolant and oil) to operate at a higher temperature during normal driving to improve the engine lubricity by controlling the coolant temperature (and engine oil by default) within the engine at higher average temperatures.
  • the coolant control valve does not provide a more rapid increase in the temperature of the transmission oil circuit because of positional limitation of a transmission oil cooler.
  • the transmission oil cooler is typically located in a radiator end tank (i.e., oil to liquid (coolant) type heat exchanger), in the air stream (i.e., air to oil cooler) in front of the vehicle engine cooling module, or both in series depending on transmission cooling demand requirements.
  • a radiator end tank i.e., oil to liquid (coolant) type heat exchanger
  • the air stream i.e., air to oil cooler
  • it may be provided as a remotely mounted stand alone oil to coolant type cooler.
  • Such a transmission oil cooler is located within one of the three main flow circuits or an auxiliary circuit. Accordingly, as the coolant flows through multiple coolant circuits, the transmission oil cooler is not fully utilizing the maximum cooling potential available for transmission oil cooling.
  • the transmission oil cooler In the case where the transmission oil cooler is located in the front end area of the vehicle (either in the radiator tank or air stream), during cold weather driving, the transmission oil is typically cooled to the minimum operating temperature if allowed to flow within the heat exchangers provided for cooling. This causes the oil to warm up slowly and also can cause the oil to operate at a temperature which is lower than the temperature for optimum transmission oil lubricity. As a result, more transmission mechanical drag can be caused and vehicle fuel economy during cold weather conditions can be reduced.
  • the oil in the cooler can get so cold and thick that the oil cooler may freeze and may not ever allow oil to pass through the cooler and, in some cases, may cause the transmission to be overheated and be damaged due to no oil flow through the transmission oil cooler.
  • the engine driven mechanical water pump always operates at some multiple or fraction of engine speed regardless of ambient temperatures or actual cooling requirements.
  • Some vehicles have recently introduced an electric water pump on an internal combustion engine but this design traditionally has been avoided due to vehicle electrical power limitations due to the high current draw required to support a stand alone water pump capable of flowing enough coolant to properly cool the vehicle.
  • a engine driven mechanical water pump or FEAD (front end assembly drive) mechanically driven impellor/pulley water pump is driven by the engine so as to rotate at a multiple of the crankshaft rotational speed.
  • the pump pulley is operably coupled to the crankshaft by a belt (e.g., serpentine belt).
  • the present invention features an integrated coolant delivery, flow control and heat exchange device which pumps or delivers coolant to an engine while controlling multiple flow modes and coolant paths to branch out (or converge) from (or to) a coolant flow valve which in turn controls all paths of coolant flow through a heat exchange mixing box.
  • an integrated coolant delivery, flow control and heat exchange device should improve both fuel economy and management of heat exchange between components of a vehicle using such a device.
  • such improvement is expected when using the device of the present invention for a number of reasons including, for example, (a) optimizing flow control speed to actual needs rather than engine speed; (b) keeping the pump off on cold start; (c) allowing interior heating with engine coolant rather than electric auxiliary heat on shutdown (start-stop for hybrids); (d) allowing faster oil warm-up (both engine & transmission); (e) allowing faster cold engine warm-up (optimize coolant flow); (f) reducing water pump load (minimize high flow pressure drop); (g) improving temperature control (minimize coolant and engine oil temperature variation within engine and increase cold weather transmission oil operating temperatures (“Oil heating mode in cold weather conditions”); and/or (h) allowing for engine coolant operating temperature calibration for optimum efficiency at any operating condition through engine control module.
  • an integrated coolant delivery, flow control and heat exchange system that includes a pump for delivering engine coolant to the engine of a vehicle and a coolant flow control and heat exchange device for a vehicle, where the pump is mechanically and fluidly coupled to the coolant flow control and heat exchange device so as to form an integrated assembly.
  • a system includes a pump part including the pump, and the coolant flow control and heat exchange device further includes a valve body part and a heat exchange part.
  • the integrated pump part of such a system of the invention suitably may comprise a pump housing unit which is an integrated (e.g., molded to) component on the system.
  • the pump housing unit may be integrated (e.g., molded to or with) to a heat exchange unit of the system.
  • the pump part and pump housing unit may suitably comprise a pump motor assembly which may comprise an electric motor and further elements particularly an impeller assembly and control circuit portion, which elements may be affixed (e.g., bolted) within or to the pump housing unit.
  • the pump motor assembly may be suitably controlled by the engine control module.
  • an integrated pump, coolant flow control and heat exchange device for a vehicle, which includes a heat exchange part, a valve body part, and a pump part. More particularly, the pump part draws coolant through the heat exchange part and the valve body part and delivers such coolant to the engine.
  • an integrated pump, coolant flow control and heat exchange device further includes an electric motor and/or internal combustion engine, a transmission, a unit heater, a radiator, and an engine control module.
  • Such a pump part may suitable comprise a pump housing unit which is an integrated (e.g., molded to) component of the integrated pump, coolant flow control and heat exchange device.
  • the pump housing unit may be suitably integrated (e.g., molded to or with) with the housing of the heat exchange unit.
  • Such a pump part may suitably comprise a pump motor assembly which may comprise an electric motor and further elements particularly an impeller assembly and control circuit portion, which elements may be affixed (e.g., bolted) within or to the pump housing unit.
  • the pump motor assembly may be suitably controlled by the engine control module.
  • the heat exchange part includes an outlet for discharging coolant from the heat exchange part into the pump, a first inlet for receiving coolant coming from the radiator, a second inlet for receiving coolant coming from the unit heater, and a heat exchanger provided inside the heat exchange part.
  • the heat exchanger includes an inlet for receiving from a source of supply, another vehicle fluid and an outlet for discharging the vehicle fluid from the heat exchanger toward the supply source, by which the heat exchanger is in fluid communication with the supply source.
  • the valve body part includes an inlet for receiving coolant coming from the engine, a first outlet for discharging coolant from the valve body part toward the radiator, and a second outlet for discharging coolant from the valve body part toward the unit heater.
  • the valve body part further includes a third outlet and the heat exchange part further includes a third inlet.
  • the third outlet of the valve body part is connected to the third inlet of the heat exchange part, thereby making the valve body part and the heat exchange part in fluid communication with each other.
  • This fluid connection between the respective third inlet and the respective third outlet functions as the engine bypass so that none, some or all of the coolant inside the valve body part is delivered to the heat exchange part to warm up and cool down the vehicle fluid inside the heat exchanger by heat exchange therebetween.
  • yet another integrated pump coolant flow control and heat exchange device that includes a heat exchange part, a pump part, and a valve body part. More particularly, the pump part draws coolant through the valve and the heat exchange part and delivers such coolant to the engine.
  • an integrated pump, coolant flow control and heat exchange device further includes an electric motor and/or internal combustion engine, a transmission, a unit heater, a radiator, and an engine control module.
  • the heat exchange part includes an outlet for discharging coolant from the heat exchange part into the pump part and a heat exchanger provided inside the heat exchange part.
  • the heat exchanger includes an inlet for receiving another vehicle fluid from a supply source and an outlet for discharging the vehicle fluid from the heat exchanger toward the fluid supply source by which the heat exchanger is in fluid communication with the fluid supply source.
  • the valve body part includes a first inlet for receiving coolant coming from the engine, a second inlet for receiving a coolant coming from the radiator, and a third inlet for receiving a coolant coming from the unit heater.
  • the valve body part further includes an outlet and the heat exchange part further includes an inlet.
  • the outlet of the valve body part is connected (e.g., fluidly coupled) to the inlet of the heat exchange part so that all of the coolant inside the valve body part can be delivered to the heat exchange part to warm up and cool down the vehicle fluid inside the heat exchanger by heat exchange there between.
  • such an integrated pump coolant flow control and heat exchange device is configured so that the valve body part is located upstream of the heat exchange part and is down stream of all other branch coolant circuits within the system such that the coolant leaving the engine flows through all branch coolant circuits before entering the valve body part.
  • an external branch coolant circuit is provided fluidly coupling the engine to the first inlet so as to provide a flowpath for engine bypass flow.
  • Such a pump part includes a pump for delivering engine coolant to the engine.
  • a pump part may suitable comprise a pump housing unit which is an integrated (e.g., molded to) component on the system.
  • a pump housing unit for example, is suitably integrated (e.g., molded to or with) with the housing of the heat exchange unit.
  • such a pump housing unit includes a pump motor assembly which suitably includes an electric motor and further elements particularly an impeller assembly and control circuit portion, which elements may be affixed (e.g., bolted) within or to the pump housing unit.
  • the pump motor assembly may be suitably controlled by the engine control module.
  • the integrated coolant delivery, flow control and heat exchange systems and integrated pump coolant flow control and heat exchange devices of the present invention further include a pump and coolant flow control system that is operably coupled to the pump, valve body part and other functionalities of such systems and devices.
  • a pump and coolant flow control system is configured and arranged so as to control the pump, valve body and other functionalities of such systems and devices so as to carry out the functions of such systems and devices of the present invention as described herein.
  • a hybrid vehicle is a vehicle that has two or more sources of propulsion/power, for example both gasoline-powered and electric-powered.
  • preferred vehicles for use with systems of the invention include electric-powered vehicles (which comprise an electric motor) and hybrid vehicles (particularly gasoline-electric hybrids which may comprise both a petroleum (e.g., gasoline) powered engine and electric motor).
  • systems and devices of the present invention are not limited solely to applications involving such vehicles. It is within the scope of the present invention for the devices and/or systems of the present invention to be used in other applications in which internal combustion engines are used, for example, stand alone internal combustion engines or an internal combustion engine operably coupled to an electric generator for generating electrical power.
  • FIG. 1 shows an integrated pump, coolant flow control and heat exchange device according to a first embodiment of the present invention
  • FIG. 2 shows a coolant flow control system including the device of FIG. 1 ;
  • FIG. 3 is an illustrative view showing an exemplary coolant and vehicle fluid flow circuit including an integrated pump, coolant flow control and heat exchange device according to another aspect the present invention
  • FIG. 4 is an illustrative view showing an integrated pump, coolant flow control and heat exchange device according to a second embodiment of the present invention
  • FIG. 5 shows a coolant flow control system including the device of FIG. 4 ;
  • FIG. 6 is a schematic diagram of an integrated pump, coolant flow control and heat exchange device according to an embodiment of the present invention, where the heat exchange part of which is mounted on a supply housing of a vehicle and which includes a plurality of heat exchangers.
  • Such systems or devices in their broadest aspects, pump or deliver coolant to an engine while controlling multiple flow modes and coolant paths to branch out (or converge) from (or to) a coolant flow valve which in turn controls all paths of coolant flow through a heat exchange mixing box.
  • such systems and devices of the present invention comprises an integrated pump for delivering an engine coolant to the engine, coolant flow control and heat exchange device for a vehicle.
  • Systems and devices of the invention can provide notable advantages over prior systems, including for example, eliminating the need for FEAD (front end assembly drive) mechanically driven impellor/pulley water pump; potentially simplifying and/or eliminating certain connecting tubes, hose and clamp parts; improving coolant flow rate control; and/or providing reductions in weight and manufacturing costs.
  • FEAD front end assembly drive
  • systems and devices of the invention are particularly useful for hybrid and all-electric vehicles which can require a stand-alone water pump as a component of the cooling system.
  • systems of the invention can eliminate the need for a circulation pump and in the case of hybrid vehicles, eliminate the need for FEAD (front end assembly drive) mechanically driven impellor/pulley water pump; eliminate certain connecting tubes, hose and clamp parts; and provide reductions in weight and manufacturing costs.
  • FEAD front end assembly drive
  • such systems and devices of the present invention are not limited solely to applications involving such vehicles. It is within the scope of the present invention for such devices and/or systems to be used in other applications in which internal combustion engines are used, for example, stand alone internal combustion engines or an internal combustion engine operably coupled to an electric generator for generating electrical power.
  • an integrated pump coolant flow control and heat exchange device for a vehicle, the device comprising: (a) a pump for delivering engine coolant to an engine; (b) a heat exchange part which discharges the coolant from the heat exchange part toward the pump; and (c) a coolant flow control unit, wherein the pump and heat exchange part form an integrated unit.
  • a coolant flow control system for a vehicle where such a coolant flow control system includes an engine; a pump in fluid communication with the engine for delivering a coolant to the engine and an integrated pump coolant flow control and heat exchange device in fluid communication with the engine for delivering coolant to the engine.
  • an integrated pump coolant flow control and heat exchange device includes a pump in fluid communication with the engine for delivering coolant to the engine, a valve body part and a heat exchange part in fluid communication with the valve body part.
  • the valve body part is in fluid communication with the engine so as to receive all of the coolant coming from the engine, and a radiator provided in a first branch coolant circuit and being in fluid communication with the valve body part so as to receive none, some or all of the coolant coming from the valve body part; and a unit heater provided in a second branch coolant circuit and being in fluid communication with valve body part so as to receive none, some or all of the coolant coming from the valve body part, and an engine bypass provided in a third branch coolant circuit and being in fluid communication with the valve body part so as to receive none, some or all of the coolant coming from the valve body part, wherein the coolant passing through the first branch coolant circuit is delivered back to the pump after passing through the heat exchange part, and the coolant passing through the second branch coolant circuit is delivered back to the pump after passing through the heat exchange part and the coolant passing through the third branch coolant circuit is delivered back to the pump after passing through the heat exchange part.
  • FIG. 1 shows an integrated pump, coolant flow control and heat exchange device 10 for a vehicle according to a first embodiment of the present invention.
  • vehicle suitably includes an internal combustion engine and/or an electric motor, a transmission, a unit heater, a radiator, and an engine control module.
  • the integrated pump, coolant flow control and heat exchange device 10 includes an integrated pump part 50 or an integrated water pump, a valve body part 20 and a heat exchange part 30 .
  • the integrated pump part 50 includes a pump housing unit which is an integrated (e.g., molded to) component on the system having an outlet 51 so that the coolant can be returned to the electric motor and/or engine of the vehicle.
  • the pump housing unit is integrated (e.g., molded to or with) with the housing of the heat exchange unit 30 .
  • the integrated pump, coolant flow control and heat exchange device 10 includes an integrated housing unit for housing each of the valve body 20 , heat exchange part 30 and the pump 50 .
  • a housing is molded using any of a number or materials known in the art or is formed using any of a number of material and techniques as is know to those skilled in the art so as to form a housing unit for such a pump part 50 (or integrated pump), and coolant flow control and heat exchange device 10 .
  • Such forming includes providing an outlet 51 whereby fluid can be returned to the electric motor and/or engine.
  • Such a pump part 50 also includes a pump 103 or pump motor assembly.
  • a pump 103 includes an electric motor an impeller assembly and control circuit portion.
  • the impeller assembly includes an impeller that moves (e.g., rotates, pulses) so as to pressurize the fluid being acted on by the pump and so the fluid moves in a desired direction.
  • an electric motor is suitably mechanically coupled to the impeller assembly (e.g., by gearing) so that the impeller moves at a desired speed (e.g., rotates at a desired rotational speed).
  • the control circuit portion is preferably configured and arranged to control the electric motor so that the impeller is rotated at the desired speed.
  • the electric motor is a variable speed motor whose speed can be controlled so that the impeller is rotable at a speed within a range of values.
  • the pump housing unit is further configured and arranged so as to removable receive and secure the pump motor assembly thereto.
  • the pump motor assembly is mechanically affixed or secured to the pump housing unit such as by bolts or using any of a number of other mechanical techniques as are known to those skilled in the art.
  • the valve body part 20 includes at least one inlet and at least one outlet.
  • the valve body part includes an inlet 21 , a first outlet 22 , a second outlet 23 , and a third outlet 24 .
  • FIG. 3 illustrates an exemplary coolant and vehicle fluid flow circuit when using the integrated pump, coolant flow control and heat exchange device 10 of the present invention.
  • the heat exchange part 30 includes at least one inlet and can feed (outlet) coolant to the pump part 50 or integrated water pump.
  • the heat exchange part 30 may include multiple inlets e.g., as shown in FIG. 1 , first inlet 32 , second inlet 33 and third inlet 34 .
  • the heat exchange part also may contain one or more outlets including outlet 31 to the pump part 50 as shown in FIG. 1 .
  • the pump part 50 or integrated water pump may suitably include an outlet 51 , so that operation of the pump returns coolant to the electric motor or engine.
  • the pump part 50 may suitably include an inlet 52 that is fluidly coupled to an outlet 31 of the heat exchange part 30 so that coolant flows from the heat exchange part to the pump and thence to the electric motor and/or engine.
  • the inlet 21 of the valve body part 20 is suitably provided to receive coolant coming from the engine/electric motor.
  • the first outlet 22 of the valve body part 20 is provided to discharge coolant from the valve body part 20 toward the radiator.
  • the second outlet 23 of the valve body part 20 is provided to discharge coolant from the valve body part 20 toward the unit heater.
  • the outlet 31 of the heat exchange part 30 is provided to discharge coolant from the heat exchange part 30 to the pump part 50 .
  • the first inlet 32 of the heat exchange part 30 is provided to receive coolant flowing from the radiator.
  • the second inlet 33 of the heat exchange part 30 is provided to receive coolant coming from the unit heater.
  • the third outlet 24 of the valve body part 20 is connected (i.e., mechanically and fluidly coupled) to the third inlet 34 of the heat exchange part 30 , which takes the place of the traditional engine coolant bypass circuit.
  • the valve body part 20 controls the coolant flow so that none, some or all of the coolant can be delivered to the heat exchange part 30 to thereby warm up and cool down a vehicle fluid inside the heat exchanger 40 by heat exchange therebetween.
  • the valve body part 20 further includes a flow wall 26 for flow control.
  • a flow wall 26 within the valve body part 20 functions to control the amount of coolant flowing into various system circuits.
  • the flow wall 26 suitably may be shaped like an inverted cup with varying opening shapes made in the cup which coincides with the different outlets.
  • the flow wall 26 is configured so as to be capable of blocking all flow to an outlet or controlling any percent of flow up to full flow to any outlet depending on system requirements.
  • the flow amount can be, suitably, controlled by unique controlled opening patterns located in the flow wall 26 designed to meet specific system coolant flow amounts based on circuit requirements.
  • the heat exchange part 30 further includes a (fluid to fluid) heat exchanger 40 provided within the heat exchange part 30 .
  • the heat exchanger 40 suitably includes at least one inlet and at least one outlet. Preferably, it may include an inlet 41 and an outlet 42 , as generally depicted in FIG. 1 .
  • the inlet 41 is provided ideally for receiving a vehicle fluid from a supply source and the outlet 42 is provided for discharging the vehicle fluid from the heat exchanger 40 .
  • vehicle fluid examples include, but is not limited to, transmission oil, engine oil, power steering fluid, differential oil, trans axle oil, electric cooler fluid, converter oil, generator oil, a/c cabin refrigerant and/or any kind of fluids for use in any other system or device within the vehicle requiring cooling or warming.
  • vehicle fluid can be any type of fluids, gases or mixtures requiring cooling or heating such as oils, refrigerants, coolants or salts. Only for illustration purposes, the device 10 shown in FIG. 1 (and other drawings) is described to include transmission oil as the vehicle fluid and a transmission as the supply source.
  • such an integrated pump, coolant flow control and heat exchange device 10 more particularly the exchange part 30 thereof, to be configured so as to include a plurality or two or more of such heat exchangers 40 provided within the heat exchange part 30 .
  • the device 10 may further include an actuator 25 on or near the valve body part 20 .
  • the actuator 25 is configured to operate, in response to a control signal from the engine control module (ECM), so as to selectively operate the movement of the flow wall 26 which opens, varies and/or closes the flow through the outlet 22 , 23 , 24 of the valve body part 20 in response to respective control signals from the engine control module.
  • ECM engine control module
  • the actuator 25 can be realized in various forms.
  • One example is a step motor (e.g., an electric step motor) that is controlled by a signal received from the engine controller which, depending on coolant and oil temperatures, controls the flow wall 26 position to optimize coolant flow within the circuits.
  • the device 10 further includes a pressure cap 38 on a portion of the heat exchange part 30 .
  • the pressure cap 38 similar to a traditional spring actuated pressure cap, may function as a controller of the coolant operating pressure within the system and/or as an access point in the system for adding coolant for system servicing.
  • valve body part 20 The shape, size, and position of the valve body part 20 are not limited to particular ones and can be independently changed according to design choices and/or operational conditions.
  • the valve body part 20 may have a circular cross section.
  • the position, shape and size of the inlet 21 and the first, second, and third outlets 22 , 23 , 24 of the valve body part 20 , the outlet 31 and the first, second, and the third inlets 32 , 33 , 34 of the heat exchange part 30 , and the inlet 41 and the outlet 42 of the heat exchanger 40 are not limited to particular ones and can be independently changed according to design choices and/or operational conditions.
  • the inlets 21 , 32 , 33 , 34 , 41 and the outlets 22 , 23 , 24 , 31 , 42 each may have a circular cross section.
  • the inlets 21 , 32 , 33 , 34 , 41 and the outlets 22 , 23 , 24 , 31 , 42 may be designed to have identical or different shapes and sizes.
  • the third outlet 24 and the third inlet 34 may be formed integrally or separately.
  • additional ports may be added to supply coolant to other branch coolant circuits (not shown).
  • additional outlet(s) similar to the outlet 23 which can flow a coolant to other possible circuit needs (i.e., engine cooler, power steering cooler, electric cooler fluid, throttle body warmer, or any other systems or devices provided within a vehicle for cooling or warming).
  • the valve body part 20 may be formed integrally with the heat exchange part 30 while being in fluid communication with the heat exchange part 30 . Alternatively, it may be located remotely from the heat exchange part 30 while being in fluid communication with the heat exchange part 30 .
  • the heat exchange part may include a plurality of heat exchangers.
  • the heat exchange part 130 may include two heat exchangers 131 , 132 .
  • the heat exchange part 30 may, suitably, be mounted on a predetermined portion or portions of a supply source housing 102 (e.g., transmission housing) while being in fluid communication with the supply source housing 102 . Alternatively, it may be placed remotely from the supply source housing 102 while being in fluid communication with the supply source housing 102 .
  • the heat exchange part 130 may be mounted on a portion of the supply source housing 102 (e.g., transmission housing).
  • the heat exchange part 130 may have a first heat exchanger 131 and a second heat exchanger 132 .
  • the valve body part 20 may be disposed in the above-described manner.
  • the first heat exchanger 131 may be in fluid communication with the supply housing 102 through a first heat exchanger inlet 151 and a first heat exchanger outlet 152 , which are similar to the inlet 41 and outlet 42 , respectively.
  • the first heat exchanger inlet 151 and outlet 152 can be formed either in the supply source housing 102 while being in fluid communication with the first heat exchanger 131 or in the other vehicle system(s) while being in fluid communication with the first heat exchanger 131 .
  • the second heat exchanger 132 may fluid communicate with the supply source housing 102 through a second heat exchanger inlet (not shown) and a second heat exchanger outlet (not shown) which are similar to the first exchanger inlet 151 and outlet 152 .
  • the second heat exchanger 132 may be designed to be in fluid communication with additional vehicle systems (not shown) that need either cooling or warming.
  • additional vehicle systems not shown
  • the mounting position of the heat exchange part and the number of the heat exchangers located within the heat exchange part can be adjusted according to design choice and operational condition.
  • vehicle fluid refers to any type of fluids for use in any systems or devices within a vehicle for cooling or warming purpose.
  • vehicle fluid includes, but is not limited to, oils, refrigerants, coolants or salts and may be in the form of liquid, gas, or mixture thereof.
  • Non-limiting examples of the fluid include a transmission oil, an engine oil, a power steering oil or fluid, a differential oil, a trans axle oil, an electric cooler fluid, a converter oil, a generator oil, and an a/c cabin refrigerant.
  • FIG. 2 a coolant flow control system 100 including the integrated coolant flow control and heat exchange device 10 according to the first embodiment is described.
  • the coolant control system 100 includes an integrated coolant flow control and heat exchange device 10 , an engine 101 , a pump 103 , a radiator 104 , a unit heater 105 and a throttle body warmer 106 .
  • the integrated coolant flow control and heat exchange device 10 includes a valve body part 120 and a heat exchange part 130 in fluid communication with the valve body part 120 .
  • the valve body part 120 is in fluid communication with the engine 101 and receives all of the coolant coming from the engine 101 .
  • the heat exchange part 130 includes a first heat exchanger 131 for receiving, accommodating and discharging a first vehicle fluid.
  • the first vehicle fluid inside the first heat exchanger 131 is heat exchanged with the coolant inside the heat exchange part 130 , thereby being able to be warmed or cooled.
  • the pump 103 is in fluid communication with the engine 101 for delivering a coolant to the engine 101 .
  • the radiator 104 is provided in a first branch coolant circuit 110 and is in fluid communication with the valve body part 120 so as to receive none, some or all of the coolant coming from the valve body part 120 .
  • the unit heater 105 and throttle body warmer 106 are provided in a second branch coolant circuit 111 and are in fluid communication with valve body part 120 so as to receive none, some or all of the coolant coming from the valve body part 120 .
  • the engine bypass 107 is in a third branch coolant circuit 112 and in fluid communication between the valve body part 120 and the heat exchange part 130 so as to receive none, some or all of the coolant coming from the valve body part 120 .
  • the third branch circuit 112 can either be formed integrally between the valve body part 120 and heat exchange part 130 or be formed separately with a communication device.
  • the coolant passing through the first branch coolant circuit 110 is delivered back to the pump 103 after passing through the heat exchange part 130 .
  • the coolant passing through the second branch coolant circuit 111 is delivered back to the pump 103 after passing through the heat exchange part 130 .
  • the coolant passing through the third branch coolant circuit 112 is delivered back to the pump 103 after passing through the heat exchange part 130 .
  • the number of the branch coolant circuits 110 , 111 , 112 controlled by the device 10 can be adjusted as long as packaging space permits and proper function is ensured and/or depending on design choice.
  • the system may further include additional branch coolant circuit(s) that can flow a fluid(s) to and from other possible supply source(s) requiring cooling and/or warming depending on cooling system design and requirements.
  • the coolant flow would be controlled through the branch coolant circuits by the valve body part 120 of the device 10 .
  • the system may further include additional heat exchanger(s).
  • the heat exchanger(s) may be connected in parallel or series with existing circuits like the throttle body 106 connected to the unit heater 105 , may be connected in parallel or series with at least one of the branch coolant circuits 110 , 111 , 112 , or may have its own independent branch circuit but deliver the coolant back to the pump after passing through the heat exchange part 130 .
  • the heat exchange part 130 may further include a second heat exchanger 132 for receiving, accommodating and discharging a second vehicle fluid.
  • the second vehicle fluid inside the second heat exchanger 132 is heat exchanged with the coolant inside the heat exchange part 130 , thereby being able to be warmed or cooled.
  • the second vehicle fluid may be identical to or different from the first vehicle fluid.
  • the second vehicle fluid can be any type of vehicle fluid for use in systems or devices within a vehicle for cooling or warming purpose. Examples of the second vehicle fluid include, but is not limited to, a transmission oil, an engine oil, or a power steering oil, a differential oil, a trans axle oil, an electric cooler fluid, a converter oil, a generator oil, or an a/c cabin refrigerant.
  • the first heat exchanger 131 can be positioned on a portion of the supply source housing (e.g., transmission housing) 102 , in which case the fluid path would require no additional connecting hardware.
  • the integrated coolant flow control and heat exchange device 10 a includes a valve body part 60 , a heat exchange part 70 and a valve body part 50 or integrated pump.
  • valve body part 60 is located upstream of the heat exchange part 70 and is downstream of all other branch coolant circuits within the system such that the coolant leaving the engine flows through all branch coolant circuits before entering the valve body part 60 .
  • an external branch coolant circuit 240 is provided that is fluidly coupled to an inlet 61 of the valve body and to a feedline to the radiator. This branch circuit 240 and the inlet pipe (i.e., first inlet 61 ), provides for the engine bypass 240 flow.
  • all the branch coolant circuits are pressurized by the pump.
  • the valve body part 60 suitably includes at least one inlet and at least one outlet.
  • the valve body part 60 includes a first inlet 61 , a second inlet 62 , a third inlet 63 , and an outlet 64 .
  • the heat exchange part 70 includes at least one inlet and at least one outlet.
  • the heat exchange part includes an outlet 71 and a first inlet 74 .
  • the first inlet 61 of the valve body part 60 is provided for receiving coolant coming from the engine.
  • the second inlet 62 of the valve body part 60 is provided for receiving coolant coming from the radiator.
  • the third inlet 63 of the valve body part 60 is provided for receiving coolant coming from the unit heater.
  • the outlet 71 of the heat exchange part 70 is provided for discharging all the coolant from the heat exchange part 70 toward the pump part 50 or the integrated pump.
  • the first inlet 74 of the heat exchange part 70 is provided to receive all the coolant coming from the valve body part 60 .
  • the outlet 64 of the valve body part 60 is connected (fluidly coupled) to the inlet 74 of the heat exchange part 70 so that all of the coolant inside the valve body part 60 is delivered to the heat exchange part 70 to thereby warm up and cool down the supply source fluid (e.g., transmission oil) inside the heat exchanger 80 by heat exchange therebetween.
  • supply source fluid e.g., transmission oil
  • the valve body part 60 further includes a flow wall 66 .
  • the flow wall 66 functions to control the amount of a coolant flowing from various system circuits.
  • the flow wall 66 may be shaped like, e.g., an inverted cup with varying opening shapes made in the cup which coincides with the different inlets.
  • the flow wall 66 is capable of blocking all flow from the inlets or controlling any percent of flow up to full flow through any inlet depending on system requirements.
  • the flow amount can be suitably, controlled by unique controlled opening patterns located in the flow wall designed to meet specific system coolant flow amounts based on circuit requirements.
  • the heat exchange part 70 suitably further includes a heat exchanger 80 provided inside the heat exchange part 70 .
  • the heat exchanger 80 includes at least one inlet and at least one outlet. Preferably, it may include an inlet 81 and an outlet 82 , as shown in FIG. 4 .
  • the inlet 81 is provided for receiving a vehicle fluid (e.g., transmission oil) from a supply source (e.g., transmission) and the outlet 82 is provided for discharging the vehicle fluid from the heat exchanger 80 toward the supply source, by which the heat exchanger 80 is in fluid communication with the supply source.
  • a vehicle fluid e.g., transmission oil
  • a supply source e.g., transmission
  • Such a pump part 50 includes a pump housing unit which is an integrated (e.g., molded to) component on the system having an outlet 51 so that the coolant can be returned to the electric motor and/or engine of the vehicle.
  • the integrated pump, coolant flow control and heat exchange device 10 a includes an integrated housing unit for housing each of the valve body 70 , heat exchange part 60 and the pump 50 , whereby the outlet 51 is provided in the housing whereby fluid can be returned to the electric motor and/or engine.
  • such a pump part 50 also includes a pump 103 or pump motor assembly.
  • a pump 103 includes an electric motor an impeller assembly and control circuit portion.
  • the impeller assembly includes an impeller that moves (e.g., rotates, pulses) so as to pressurize the fluid being acted on by the pump and so the fluid moves in a desired direction.
  • Such an electric motor is suitably mechanically coupled to the impeller assembly (e.g., by gearing) so that the impeller moves at a desired speed (e.g., rotates at a desired rotational speed).
  • the control circuit portion is preferably configured and arranged to control the electric motor so that the impeller is rotated at the desired speed.
  • the electric motor is a variable speed motor whose speed can be controlled so that the impeller is rotable at a speed within a range of values.
  • the integrated pump, coolant flow control and heat exchange device 10 a suitably further includes an actuator 65 on or near the valve body part 60 .
  • the actuator 65 is configured to operate in response to a control signal from the engine control module so as to selectively operate the movement of the flow wall 66 within the flow body part 60 in response to the control signals from the engine control module.
  • the actuator 65 can be realized in various forms.
  • One example is a step motor, such as that described herein, that is controlled by a signal received from the engine controller which, depending on coolant and oil temperatures, can control the flow wall 66 position to optimize coolant flow within the various circuits.
  • the integrated pump, coolant flow control and heat exchange device 10 a further includes a pressure cap 78 on a portion of the heat exchange part 70 .
  • the pressure cap 78 may function as a controller of the coolant operating pressure within the system and/or as an access point in the system for adding coolant for system servicing.
  • valve body part 60 The shape, size, and position of the valve body part 60 are not limited to particular shape, size, and location and can be adjusted according to design choices and/or operational conditions.
  • the vertical direction cross section of the valve body part 60 may be circular such that the flow wall 66 can rotate within the valve body part 60 and control the flow amount within the various branch coolant circuits.
  • the position, shape and size of the inlets 61 , 62 , 63 and the outlet 64 of the valve body part 60 , the outlet 71 and the first inlet 74 of the heat exchange part 70 , and the inlet 81 and the outlet 82 of the heat exchanger 80 are not limited to particular ones and can be independently adjusted according to e.g., operational conditions.
  • the inlets 61 , 62 , 63 , 74 , 81 and the outlets 64 , 71 , 82 each may have a circular cross section.
  • some or all of the inlets 61 , 62 , 63 , 74 , 81 and the outlets 64 , 71 , 82 may be designed to have identical or different shapes and sizes.
  • the outlet 64 and the inlet 74 may be formed integrally or separately.
  • the entire valve body part 60 can be integrated together with the heat exchange part 70 as one integral part with no wall separating the two parts.
  • additional ports may be added to receive a coolant from other branch coolant circuits (not shown).
  • additional inlet(s) similar to the inlet 63 which can receive a coolant from other possible branch coolant circuits.
  • the heat exchange part may include a plurality of heat exchangers.
  • the heat exchange part 230 may include two heat exchangers 231 , 232 .
  • the heat exchange part 70 may, suitably, be mounted on a predetermined portion or portions of a supply source housing 202 (e.g., transmission housing) while being in fluid communication with the supply source housing 202 .
  • a supply source housing 202 e.g., transmission housing
  • it may be placed remotely from the supply source housing 202 while being in fluid communication with the supply source housing 202 .
  • valve body part 60 may be formed integrally with the heat exchange part 70 while being in fluid communication with the heat exchange part 70 . Alternatively, it may be located remotely from the heat exchange part 70 while being in fluid communication with the heat exchange part 70 .
  • the heat exchange part 230 may be mounted on a portion of the supply source housing 202 (e.g., transmission housing).
  • the heat exchange part 230 may have a first heat exchanger 231 and a second heat exchanger 232 .
  • the valve body part 60 may be disposed in the above-described manner.
  • the first heat exchanger 231 is in fluid communication with the supply housing 202 through a first heat exchanger inlet 251 and a first heat exchanger outlet 252 , which are similar to the inlet 41 and outlet 42 , respectively.
  • the first heat exchanger inlet 251 and outlet 252 can be formed either in the supply source housing 202 while being in fluid communication with the first heat exchanger 231 or with other vehicle system(s) while being in fluid communication with the first heat exchanger 231 .
  • the second heat exchanger 232 may be in fluid communication with the supply source housing 202 through a second heat exchanger inlet (not shown) and a second heat exchanger outlet (not shown) which are similar to the first exchanger inlet 251 and outlet 252 .
  • the second heat exchanger 232 may be designed to be in fluid communication with additional vehicle systems (not shown) that need either cooling or warming.
  • additional vehicle systems not shown
  • the mounting position of the heat exchange part and the number of the heat exchangers located within the heat exchange part can be adjusted according to e.g., operational condition.
  • FIG. 5 there is shown a coolant flow control system 200 for a vehicle including the integrated pump coolant flow control and heat exchange device 10 a as described herein.
  • the coolant flow control system 200 suitably includes an integrated coolant flow control and heat exchange device 10 a , an engine 201 , a pump 203 , a radiator 204 , a unit heater 205 , a throttle body warmer 206 and an engine control module 260 .
  • the integrated coolant flow control and heat exchange device 10 a includes a valve body part 220 and a heat exchange part 230 in fluid communication with the valve body part 220 .
  • the pump part 50 or pump 203 is arranged so that it draws coolant through the valve body part and thence through the heat exchange part into the pump for delivery to the engine 201 .
  • the heat exchanger part 230 suitably includes therein a first heat exchanger 231 for receiving, accommodating and discharging a first vehicle fluid.
  • the first vehicle fluid inside the first heat exchanger 231 is heat exchanged with the coolant inside the heat exchange part 230 , thereby being able to be warmed or cooled.
  • the pump 203 is in fluid communication with the engine 201 for delivering a coolant to the engine 201 .
  • the radiator 204 is suitably provided in a first branch coolant circuit 210 and is in fluid communication with the engine so as to receive some or all of the coolant coming from the engine 201 .
  • the unit heater 205 is provided in a second branch coolant circuit 211 and is in fluid communication with the engine so as to receive some or all of the coolant coming from the engine 201 .
  • the engine bypass 240 is suitably provided in a third branch coolant circuit 212 and is in fluid communication with the engine so as to receive some or all of the coolant coming from the engine 201 .
  • All the coolant passing through the first branch coolant circuit 210 is delivered back to the pump 203 after passing through the valve body part 220 and then the heat exchange part 230 .
  • All the coolant passing through the second branch coolant circuit 211 suitably is delivered back to the pump 203 after passing through the valve body part 220 and then the heat exchange part 230 .
  • All the coolant passing through the third branch coolant circuit 212 is suitably delivered back to the pump 203 after passing through the valve body part 220 and then the heat exchange part 230 . This would also be true for any other additional branch coolant circuits that may be part of an engine cooling system.
  • such integrated pump coolant flow control and heat exchange systems and integrated pump coolant flow control and heat exchange devices of the present invention further include one or more, more particularly at least one, additional branch coolant circuit(s) that can flow a fluid(s) to and from other possible supply source(s) requiring cooling or warming depending on cooling system design and requirements.
  • such integrated pump coolant flow control and heat exchange systems and integrated pump coolant flow control and heat exchange devices of the present invention further include additional heat exchanger(s).
  • the additional heat exchanger(s) may be connected in parallel or series with existing circuits like the throttle body 106 , 206 connected to the unit heater 105 , 205 , may be connected in parallel or series with at least one of the branch coolant circuits 210 , 211 , 212 , or may have its own independent branch circuit but deliver the coolant back to the pump after passing through the valve body part 220 and the heat exchange part ( 230 ).
  • the heat exchange part 230 may further include a second heat exchanger 232 for receiving, accommodating and discharging a second vehicle fluid.
  • the second vehicle fluid inside the second heat exchanger 232 is heat exchanged with the coolant inside the heat exchange part 230 , thereby being able to be warmed or cooled.
  • the second vehicle fluid may be identical to or different from the first vehicle fluid.
  • the second vehicle fluid can be any type of vehicle fluid for use in systems or devices within a vehicle for cooling or warming purpose.
  • Examples of the second vehicle fluid include, but are not limited to, a transmission oil, an engine oil, or a power steering oil or fluid, a differential oil, a trans axle oil, an electric cooler fluid, a converter oil, a generator oil, and/or an a/c cabin refrigerant.
  • the first heat exchanger 231 can be positioned on a portion of the supply source housing (e.g., transmission housing) 202 , in which case the fluid path would require no additional connecting hardware.
  • the fluid (transmission oil) can be warmed or cooled quickly. More particularly, in the case of warm up mode, all the coolant from all cooling branch circuits 110 , 111 , 112 , 210 , 211 , 212 which is warmer than the supply source fluid (transmission oil), is controlled to pass over the heat exchanger 131 , 231 before returning to the pump 103 , 203 , thereby warming the supply source fluid (transmission oil) with the waste heat produced from other vehicle areas.
  • valve body part 20 , 60 achieved by controlling the positioning of the flow wall 26 , 66 within the valve body 20 , 60 can provide one or more of the following features:
  • Rapid Engine Warm-Up Mode In this fully blocked mode, the flow wall ( 26 , 66 ) can be positioned within the valve body 20 , 60 so as to allow no coolant flow within any circuit or the engine. This condition is desired on cold engine start up where all heat generated within the engine is used to rapidly warm up the coolant and improve cold start fuel economy.
  • any coolant flow in any of the coolant branch circuits must pass through the heat exchange part 130 , 230 and then by the heat exchanger before returning to the pump 103 , 203 , thereby maximizing the heat exchange performance.
  • the vehicle fluid e.g., transmission oil
  • the vehicle fluid can be warmed up or cooled down quickly.
  • space utilization can be improved and the number of components consisting of the system can be reduced.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Automation & Control Theory (AREA)
  • Transportation (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
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