WO1999051863A1 - Cooling control device of internal combustion engine - Google Patents
Cooling control device of internal combustion engine Download PDFInfo
- Publication number
- WO1999051863A1 WO1999051863A1 PCT/JP1999/001814 JP9901814W WO9951863A1 WO 1999051863 A1 WO1999051863 A1 WO 1999051863A1 JP 9901814 W JP9901814 W JP 9901814W WO 9951863 A1 WO9951863 A1 WO 9951863A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- valve
- internal combustion
- combustion engine
- flow control
- control valve
- Prior art date
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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
- 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
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- 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
- F01P2007/143—Controlling of coolant flow the coolant being liquid using restrictions
-
- 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
- F01P2023/00—Signal processing; Details thereof
- F01P2023/08—Microprocessor; Microcomputer
-
- 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
- F01P2031/00—Fail safe
- F01P2031/32—Deblocking of damaged thermostat
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- 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
- F01P2031/00—Fail safe
- F01P2031/34—Limping home
Definitions
- the present invention relates to a cooling control device for cooling an internal combustion engine, such as an automobile engine, and more particularly to a file safe in a flow control mechanism for controlling a flow rate of cooling water heated by the internal combustion engine to a radiator side.
- a cooling control device for cooling an internal combustion engine, such as an automobile engine
- a file safe in a flow control mechanism for controlling a flow rate of cooling water heated by the internal combustion engine to a radiator side.
- a water-cooled cooling device using a radiator as a heat exchanger is generally used for cooling the engine.
- cooling water that passes through a water jacket in the engine and rises in temperature is circulated to the radiator side, and the cooling water cooled by heat release by the radiator is sent back into the engine water jacket. Be composed.
- Fig. 9 shows the basic configuration of the engine.
- the engine E has a well-known water jacket 11 inside it, and it has a cooling water outlet 12 and a cooling water inlet 13. Are connected to the radiator R by cooling water channels 14a, 14b, and 15.
- a bypass passage 16 that bypasses the radiator R is provided between the cooling water passage 14a and the cooling water passage 15.
- a flow control valve 19 is disposed between the cooling water passages 14a and 14b formed between the outlet portion 12 of the water jacket 11 and the inlet 17 of the radiator R.
- a water temperature sensor 20 for detecting the outlet water temperature of the engine E is disposed near the outlet portion 12 of the water jacket 11, and information from the water temperature sensor 20 is transmitted to a control unit (hereinafter referred to as “ECU”). , U) It is configured to be supplied to 21.
- ECU control unit
- FIG. 10 shows an example in which a butterfly valve 26 is used as the flow control valve 19. That is, in a case 25 connected between the cooling water passages 14a and 14b, a circular plate-shaped butterfly valve 26 is supported by the case 25 so as to be rotatable by a valve shaft 27. At one end of 27, for example, a worm wheel 28a is attached.
- the worm 28b fitted to the drive shaft of the step motor 29 is configured to fit with the worm wheel 28a, and the worm wheel 28a and the worm 28b constitute the speed reduction mechanism 28.
- the control signal is supplied to the step motor 29 by the calculation of the ECU 21, and the step motor 29 receives the control signal and rotates and drives the step motor 29 to control the opening and closing of the butterfly valve 26 via the speed reduction mechanism 28.
- the amount of cooling water sent from the engine E side to the radiator R side is controlled, in other words, the radiation efficiency is controlled, and such control is performed to drive the engine E at the optimum temperature. .
- the cooling water may be overcooled, and although the problem of fuel consumption of the engine E / exhaust gas will occur, It does not lead to the problem of directly damaging the engine E.
- the ECU 21 breaks down, especially when the butterfly valve 26 has a small degree of opening, the amount of cooling water sent to the radiator R side is reduced, and the The engine E can overheat while not recognizing it, which can lead to catastrophic problems.
- the present invention has been made in view of the above-described problem. For example, it is possible to prevent a problem such as causing the engine E to overheat due to the above-described failure of the ECU 21 or the like, and to exhibit a fail-safe function. It is an object of the present invention to provide a cooling control device that can be used. Disclosure of the invention
- a cooling control device for an internal combustion engine which has been made to solve the above-mentioned object, is provided in a cooling water circulation path between the internal combustion engine and a heat exchanger, and the cooling water flowing from the internal combustion engine to the heat exchanger.
- a control unit for transmitting a motor drive signal in accordance with an operation state of an internal combustion engine the control unit including a flow control valve for controlling a flow rate of the internal combustion engine in accordance with a degree of valve opening;
- An electric control circuit for forcibly driving the flow control valve in the valve opening direction.
- the electric control circuit detects an abnormality of the internal combustion engine by an electric signal, thereby cutting off a connection circuit between the control unit and the motor, and controlling a flow rate of the motor. That is, a drive signal for opening the valve is supplied.
- a second motor for driving the flow control valve is further provided, and the electric control circuit detects an abnormality of the internal combustion engine by an electric signal.
- a drive signal for opening the flow control valve is supplied to the second motor.
- a return spring for urging the flow control valve in the valve opening direction is further provided, and the electric control circuit is provided with a switch in response to a predetermined temperature or more of cooling water.
- a flow control valve is opened by the urging force of the return spring by using a thermoswitch that operates and cutting off a connection circuit between the control unit and the motor based on the operation of the thermoswitch.
- a return spring for urging the flow control valve in the valve opening direction and a clutch mechanism capable of controlling contact and separation between the motor and the flow control valve by an electric signal are further provided.
- the electric control circuit uses a thermo switch that performs a switch operation in response to a predetermined temperature or higher of the cooling water, and releases the clutch mechanism based on the operation of the thermo switch, thereby returning the return spring.
- the flow control valve is configured to be opened by the biasing force of.
- the cooling control device configured as described above includes an electric control circuit that forcibly drives the flow control valve in the valve opening direction based on an electric signal when the abnormality of the internal combustion engine is detected. For example, the flow control valve is forcibly opened by the action of a relay, etc.
- the cooling control device for an internal combustion engine is arranged in a cooling water circulation path between the internal combustion engine and the heat exchanger, and adjusts the flow rate of the cooling water flowing from the internal combustion engine to the heat exchanger according to the degree of opening.
- a control unit for transmitting a motor drive signal in accordance with an operation state of an internal combustion engine, and a motor driven by the motor drive signal from the control unit A flow control valve whose degree of valve opening is controlled by the driving force of the motor; and a flow control valve disposed in the flow control valve, for urging the flow control valve in the valve opening direction in response to an abnormal temperature of the cooling water.
- a forcible driving mechanism is arranged in a cooling water circulation path between the internal combustion engine and the heat exchanger, and adjusts the flow rate of the cooling water flowing from the internal combustion engine to the heat exchanger according to the degree of opening.
- the forcible driving mechanism includes a panel member wound on a valve shaft for controlling the opening and closing of the flow control valve, and a panel member disposed on the valve shaft and provided at both ends of a spring member.
- a pair of pin members engaged with each other to hold the panel member, and one of the pin members is made of a heat-sensitive material that disengages the spring member in response to an abnormal temperature of the cooling water.
- the flow control valve is configured to be opened by a return force of a spring member accompanying the disengagement of the pin member.
- the forcible drive mechanism includes cooling water.
- a thermo-element having a piston rod that moves in response to abnormal temperature of the piston, and a cam member that converts the movement of the piston rod into a rotational movement.
- the flow control valve is opened based on the rotational movement of the cam member. It is constituted so that.
- thermo-element having a piston rod; and a connecting member for shutting off the driving force of the motor on a valve shaft for controlling opening and closing of the flow control valve in accordance with the movement of the piston rod. Accordingly, the flow control valve is opened by the urging force of the return spring.
- a return spring for urging the flow control valve in the valve opening direction is further provided, and the forced drive mechanism is responsive to an abnormal temperature of the cooling water.
- the flow control valve when an abnormality in the internal combustion engine is detected, in response to the abnormal temperature of the cooling water in the flow control valve, the flow control valve is mechanically, so to speak, by a forced drive mechanism. Is opened.
- FIG. 1 is a configuration diagram showing a first embodiment of a cooling control device according to the present invention
- FIG. 2 is a configuration diagram showing a second embodiment
- FIG. 4 is a block diagram showing the fourth embodiment
- FIG. 5 is a block diagram showing the fifth embodiment
- '' and FIG. 7 is a configuration diagram showing the seventh embodiment
- FIG. 8 is a configuration diagram showing the eighth embodiment.
- Fig. 9 is a block diagram showing an example of the cooling water circulation path of the internal combustion engine and the location of the cooling water flow control valve
- Fig. 10 is a conventional butterfly valve and its driving mechanism.
- FIG. 3 is a configuration diagram showing an example of the above. BEST MODE FOR CARRYING OUT THE INVENTION
- the arrangement position of the control unit (ECU) 21 constituting the cooling control device is the same as the conventional loading position described in the background art above, and the reference numerals used in the following description denote the following. Parts corresponding to those shown in FIGS. 9 and 10 are denoted by the same reference numerals, and description thereof will be omitted.
- FIG. 1 shows the first embodiment.
- a first bevel gear 31 is attached to a valve shaft 27 of a flow control valve 19 in this embodiment.
- a motor 29 having a built-in speed reduction mechanism (not shown) is disposed on the side wall of the case 25, and the driving force reduced by the speed reduction mechanism is transmitted to the second bevel gear 32. ing.
- the second bevel gear 32 is configured to mesh with the first bevel gear 31. Therefore, the opening degree of the butterfly valve 26 is controlled by a motor 29. I have.
- an electric control circuit for forcibly driving the Batterai valve 26 in the valve opening direction based on an electric signal when an abnormality of the engine E is detected. That is, the water thermometer of the meter panel 33 arranged in the driver's seat is provided with a bridge circuit (not shown) including a driving coil of the water thermometer and a thermistor for sensing the temperature of the cooling water on one side.
- the configuration is such that the pointer of the water thermometer is driven to the high temperature side by the unbalance state of the bridge circuit accompanying the rise of the water temperature.
- a level detection circuit for example, a well-known threshold circuit
- the level detection circuit 34 outputs an output when its threshold voltage is higher (or lower).
- the output terminal 34a of the level detection circuit 34 is connected to the battery (+12 V) via the relay 35, and therefore, the coil 35a disposed on the relay 35 is energized, and its bipolar switching contact 35b is connected. Acts so as to switch to the ECU 21 side force and to the lanyard (+12 V) side. Therefore, the motor 29 is driven to rotate by the voltage obtained from the battery, and operates to forcibly open the butterfly valve 26.
- the level detection circuit 34 includes, for example, a bistable multivibrator.
- the level detection circuit 34 operates once, it is desirable that the self-holding function continue the operation. At this time, a force at which the current in the valve-opening direction always flows from the battery to the motor 29 is applied. It is desirable that the power supply to the motor 29 be cut off after a lapse of time.
- FIG. 2 shows a second embodiment.
- a second motor 38 having a built-in speed reduction mechanism is attached to a side wall of a case 25.
- the third bevel gear 39 which is driven to rotate by the second motor 38, is configured to mesh with the first bevel gear 31.
- the detection circuit 34 is configured to set its output terminal 35a to a reference potential point and operate the relay 35.
- the relay 35 used here a two-contact relay having a normally open contact whose contact is closed by operation and a normally closed contact whose contact is opened by operation is used. That is, as shown in FIG. 2, the normally open contact 35b is connected between the battery and the second motor 38, and the normally closed contact 35c is connected between the ECU 21 and the first motor 29. I have. Then, the normally open contact 35b is closed by the operation of the relay 35 due to an excessive rise in the cooling water temperature or the like, whereby the second motor 38 opens the reverse butterfly valve 26 from the battery via the normally open contact 35b. A current is supplied to valve the valve.
- the operation of the relay 35 causes the second motor 38 to constantly flow a current in the valve opening direction from the battery. It is desirable to arrange a timer contact that is activated by the operation of the relay 35 between the relay 38 and the relay 38 so as to cut off the power supply to the motor 38 after a lapse of a predetermined time.
- FIG. 3 shows a third embodiment.
- a return spring 41 for urging the butterfly valve 26 in the valve opening direction is further provided.
- a thermo switch 42 which performs a switch operation in response to a predetermined or higher temperature of the cooling water.
- This thermoswitch 42 has, for example, a bimetal (see FIG. (Not shown) is built in, and the switch-off operation is performed when the temperature of the cooling water reaches a predetermined temperature or more by the action of the bimetal.
- thermo switch 42 is configured to be interposed between the ECU 21 and the motor 29. Therefore, when the cooling water reaches a predetermined temperature or more, the thermo switch 42 operates, and the ECU 21 and the motor The connection circuit with 29 is cut off. Therefore, the return valve 41 is forcibly opened by the biasing force of the return spring 41.
- thermo switch 42 is more directly attached to an object to be detected, such as the vicinity of the cooling water passage 14a near the butterfly valve 26 shown in the figure, the vicinity of the cooling water outlet of the engine E, the cylinder block, and the cylinder head. A reliable (direct) operation can be performed.
- FIG. 4 shows a fourth embodiment.
- electric power is supplied to a transmission mechanism from a motor 29 used to drive the butterfly valve 26 to the butterfly valve 26.
- the feature is that a clutch mechanism whose contact and separation can be controlled by the air signal is further arranged.
- FIG. 4 (b) schematically shows the internal configuration indicated by reference numeral 29 in FIG. 4 (a).
- a first clutch disc 29B1 constituting a clutch mechanism 29B is attached to the drive shaft 29A1 of the motor 29A.
- the drive shaft 29A1 has a polygonal column shape, while a polygonal hole is formed on the first clutch disc 29B1 side so as to surround the drive shaft 29A1.
- the first clutch board 29B1 is configured to be coupled in the rotation direction of the drive shaft 29A1 and to be slidable in the axial direction.
- An annular groove 29B2 is formed on the peripheral side surface of the first clutch disc 29B1, and the distal end of the actuator 29B4 of the electromagnetic plunger 29B3 is configured to be loosely fitted in the groove 29B2. I have.
- the plunger 29B3 is provided with a coil spring 29B5. Due to the expanding action of the coil spring 29B5, in the normal state where power is not supplied to the plunger 29B3, the first clutch disc 29 B 1 to motor 29A It is made to fit.
- a second clutch board 29B6 is disposed so as to face the first clutch board 29B1, and the second clutch board 29B6 is fixed to an input-side rotating shaft 29C1 constituting a reduction mechanism 29C. I have.
- the reduction mechanism 29C is composed of a pinion and a spur gear, and a first bevel gear 32 shown in FIG. 4 (a) is attached to the output shaft 29C2 reduced by these.
- thermoswitch 42 is connected to the battery, the other end is connected to the plunger 29B3, and also to the relay 35.
- thermoswitch 42 when the temperature of the cooling water reaches a predetermined temperature or higher and the thermoswitch 42 is operated, the power supply to the relay 35 is cut off, the contact 35b is opened, and the motor 29A The control signal to is shut off. At the same time, the operation of the thermoswitch 42 cuts off the power supply to the electromagnetic plunger 29B3, so that the clutch mechanism 29B is opened.
- the butterfly valve 26 is forcibly opened by the urging force of the return spring 41.
- a fail-safe function that suppresses an abnormal rise in cooling water temperature and prevents overheating of the engine E is executed.
- FIG. 5 shows a fifth embodiment.
- a coil-shaped panel member 45 is arranged on the valve shaft 27 so as to wind the valve shaft 27.
- Each end is engaged with a pair of pin members 27a and 27b established on the valve shaft 27.
- the case 25 is provided with an engagement pin 25a protruding toward the valve shaft 27 so as to straddle the one end 45a of the spring member 45.
- the pin member 27a near the butterfly valve 26 established on the valve shaft 27 is made of a temperature fuse or a material which is blown off at a predetermined temperature or higher. Therefore, when the temperature of the cooling water rises to a predetermined temperature or more, the heat is transmitted through the valve shaft 2f to act on the pin member 27a, and the pin member 27a is blown.
- FIG. 5 (b) shows the state at that time, and shows the fusing of the pin member 27a indicated by the X mark.
- the pin member 27b arranged at a position far from the butterfly valve 26 receives a reaction due to the return force of the spring member 45, and moves the valve shaft 27 in the direction to open the butterfly valve 26. Rotate.
- the motor 29 is also forcibly rotated via the gears 31 and 32.
- FIG. 6 shows a sixth embodiment.
- a thermoelement having a piston rod which moves in response to an abnormal temperature of cooling water, and a movement of the piston rod are shown.
- a cam member that converts the rotational motion into a rotational motion, and the butterfly valve is opened based on the rotational motion by the cam member.
- a power shut-off mechanism for preventing the driving force from the motor from being transmitted to the butterfly valve with the movement of the piston rod is further provided.
- a valve shaft 27A is connected to a butterfly valve 26, and a valve shaft 27 to which a first bevel gear 31 driven by a motor 29 is attached.
- a thermo-element 47 is arranged on the valve shaft 27A side connected to the butterfly valve 26.
- wax W which expands in response to heat
- the wax W expands and moves in the axial direction, that is, the valve shaft 27B side on which the first bevel gear 31 is mounted.
- the piston rod 47a which protrudes from the piston rod 47a is disposed.
- FIG. 6 (b) shows a state where the piston rod 47a protrudes in response to heat.
- FIG. 6 (c) shows the thermoelement 47 excluding the piston rod and the shape of the end on the valve shaft 27B side connected to the thermoelement 47 in a state of being separated into right and left.
- a thermoelement 47 is integrally attached to the other end of the valve shaft 27A connected to the butterfly valve 26, and a part of the peripheral side surface has a shaft.
- a groove 47b is formed in the direction.
- a cylindrical portion 27B1 is provided at the other end of the valve shaft 27B to which the first bevel gear 31 is attached.
- An engagement pin 27B2 which protrudes toward the inner peripheral surface of the cylindrical element 27B1 and is fitted into the groove 47b, is implanted on the thermoelement 47 side of the cylindrical section 27B1.
- the groove 47b and the engaging pin 27B2 fitted in the groove 47b are connected in the rotational direction. It is configured to be able to slide in the axial direction.
- a positioning pin 25b is planted on the case 25 side facing the cylindrical portion 27B1 toward the cylindrical portion 27B1, and the positioning pin 25b is formed in the concave portion 27 formed in the cylindrical portion 27B1. Assembled into the B4.
- the concave portion 27B4 is formed so that the first bevel gear 31 side of the cylindrical portion 27B1 is formed at an angle of about 90 degrees in the circumferential direction, and the positioning pin 25b can enter the butterfly valve 26 side with a slight clearance. It is formed to the extent. That is, the concave portion 27B4 is formed in a shape like a right triangle when viewed from a direction orthogonal to the outer peripheral surface of the cylindrical portion 27B1. A portion corresponding to one side of the triangle is formed on the cam surface 27B3. Further, a push spring 48 is disposed on the end side of the valve shaft 27B, and the push shaft 48 is configured to urge the valve shaft 27B toward the valve shaft 27A.
- the butterfly valve 26 can be opened and closed at an angle of approximately 90 degrees by driving the motor 29, and normal temperature control of the cooling water is guaranteed.
- thermo-element 47 is filled with the wax W as a thermal expansion body, so that the piston rod 47a projects to the shape shown in FIG. 6 (b). State. That is, the valve shaft 27B is retracted by being pushed by the piston rod 47a.
- the positioning pin 25b implanted in the case 25 relatively moves along the cam surface 27B3 formed in the concave portion 27B4 of the cylindrical portion 27B1, and the valve shaft 27 B is restricted to a certain angle. That is, the butterfly valve 26 is locked in the open state.
- the first bevel gear 31 attached to the valve shaft 27B is separated from the second bevel gear attached to the motor 29 by a power cutoff.
- the mechanism operates to prevent the driving force of the motor 29 from being transmitted to the butterfly valve 26. Therefore, by such an operation, a fail-safe function that suppresses an abnormal rise in the cooling water temperature and prevents the engine E from overheating is executed.
- FIG. 7 shows a seventh embodiment, in which the opening and closing of the butterfly valve 26 is controlled in accordance with the movement of the piston rod 47a of the thermoelement 4f.
- a member for interrupting the driving force of the motor 29 is provided, and when the connection of this member is released, the return spring is used to open the return butterfly valve. .
- a retainer 51 is disposed on the thermoelement 47 so as to surround the piston rod 47a embedded therein.
- a coil spring 52 is disposed between the retainer 51 and the valve shaft 27B, and the coil spring 52 is configured to bias the retainer 51 toward the thermometer 47.
- a pair of rods 51a is attached to the retainer 51, and the pair of rods 51a is configured to be slidable along a shaft hole arranged in the valve shaft 27B.
- an engagement hole 27A1 that engages with the pair of rods 51a is formed in an end surface of the valve shaft 27A that faces the pair of rods 51a.
- FIG. 7 (a) showing a state in which the cooling water is in a predetermined temperature range
- the piston port 4a of the thermo element 47 is in a buried state, so that the retainer 51 is also not connected.
- the pair of rods 51a that are pressed by the screw 52 and constitute the connecting member are engaged with the engagement holes 27A1 formed in the valve shaft 27A. Therefore, in this state, the valve shafts 27A and 27B rotate integrally via the pair of ports 51a constituting the connecting member. Therefore, in this state, the butterfly valve 26 can be opened and closed by driving the motor 29, and normal temperature control of the cooling water is guaranteed.
- thermoelement 47 when the temperature of the cooling water rises to a predetermined temperature or more, the heat is transmitted through the valve shaft 27A to heat the thermoelement 47.
- wax as a thermal expansion body is sealed in the thermoelement 47, so that the piston rod 47a projects to the state shown in FIG. 7 (b). That is, the liner 51 and the pair of rods 51a integrally attached thereto move the spring 52 to the valve shaft 27B side by contracting.
- the pair of rods 51a is disengaged from the engagement hole 27A1 formed in the valve shaft 27A, and the connection between the two is released. Therefore, the butterfly valve 26 is opened by the action of the return spring 41, and the fail-safe function for preventing the engine E from overheating is executed.
- FIG. 8 shows an eighth embodiment.
- a heat-sensitive element that changes its shape in response to an abnormal temperature of cooling water, for example, a shape-memory alloy formed in a coil spring shape, or a bimetallic heat-acting member is used.
- the driving force of the motor is cut off on a valve shaft for controlling the opening and closing of the flow control valve by the operation of the member, and the return butterfly valve is opened by a return spring. .
- the left half of the valve shaft 2f is formed of a prism 27d, and the first bevel gear 31 slides on the shaft 27d on the shaft and rotates in the rotational direction. It is configured so that it can be connected to A coil-shaped spring 56 is arranged around the axis between the substantially central portion of the valve shaft 27 and the first bevel gear 31 so that the first bevel gear 31 becomes the second bevel gear 31. It is configured to always meet 32.
- a heat operating member 55 made of a shape memory alloy formed in a coil shape is disposed around the axis.
- the force for forcibly opening the butterfly valve based on the detection of an abnormal electrical condition or the abnormal rise of the cooling water temperature is limited to the butterfly valve.
- the same effect can be obtained even if another flow control valve capable of controlling the flow rate of the cooling water by rotating the valve shaft is employed.
- the present invention is not limited to such a specific one, but can be applied to other internal combustion engines to achieve the same operation and effect. Can be obtained.
- the cooling control device for an internal combustion engine in addition to the normal operation circuit, an electrical abnormal condition is detected and the cooling water flow control valve is forcibly released.
- a forced drive mechanism that forcibly releases the coolant flow control valve based on an abnormal rise in coolant temperature is provided integrally with the flow control valve. In this case, even if the valve becomes inoperable, a reliable fail-safe function can be exhibited, and a flow control valve having a light weight, a compact size, and a good outfitting property can be provided.
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR19997011241A KR20010013250A (ko) | 1998-04-07 | 1999-04-06 | 내연기관의 냉각제어장치 |
CA002289018A CA2289018A1 (en) | 1998-04-07 | 1999-04-06 | Cooling control device of internal combustion engine |
EP99912118A EP1035307A4 (en) | 1998-04-07 | 1999-04-06 | COOLING CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10/111538 | 1998-04-07 | ||
JP10111538A JPH11294163A (ja) | 1998-04-07 | 1998-04-07 | 内燃機関の冷却制御装置 |
Publications (1)
Publication Number | Publication Date |
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WO1999051863A1 true WO1999051863A1 (en) | 1999-10-14 |
Family
ID=14563909
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1999/001814 WO1999051863A1 (en) | 1998-04-07 | 1999-04-06 | Cooling control device of internal combustion engine |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP1035307A4 (ja) |
JP (1) | JPH11294163A (ja) |
KR (1) | KR20010013250A (ja) |
CN (1) | CN1263582A (ja) |
CA (1) | CA2289018A1 (ja) |
TW (1) | TW417006B (ja) |
WO (1) | WO1999051863A1 (ja) |
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DE10243778A1 (de) * | 2002-09-20 | 2004-03-25 | Siemens Ag | Stelleinrichtung |
CN101283170B (zh) * | 2005-10-05 | 2010-08-18 | 通用电气公司 | 用于柴油发动机的集成发动机控制和冷却系统 |
TWI396634B (zh) * | 2007-04-30 | 2013-05-21 | Kwang Yang Motor Co | Vehicle cooling system |
JP4877057B2 (ja) * | 2007-05-07 | 2012-02-15 | 日産自動車株式会社 | 内燃機関の冷却系装置 |
WO2011037287A1 (ko) * | 2009-09-25 | 2011-03-31 | 한국산업기술대학교산학협력단 | 페일세이프티 엑츄에이터 |
US8573163B2 (en) * | 2009-10-05 | 2013-11-05 | Toyota Jidosha Kabushiki Kaisha | Cooling device for vehicle |
DE102012208652B3 (de) * | 2012-05-23 | 2013-09-19 | Magna Powertrain Ag & Co. Kg | Ventil |
EP3014152B1 (de) * | 2013-06-25 | 2017-05-03 | MAGNA Powertrain GmbH & Co KG | Ventil mit fail-safe-mechanismus |
DE102014204485B3 (de) * | 2014-03-11 | 2015-02-12 | Magna Powertrain Ag & Co. Kg | Ventil mit Fail-Safe-Mechanismus |
KR101567434B1 (ko) * | 2014-07-31 | 2015-11-12 | 인지컨트롤스 주식회사 | 페일 세이프티 냉각수조절밸브 |
US9927041B2 (en) * | 2014-08-29 | 2018-03-27 | A. Raymond Et Cie | Fluid control valve utilizing shape memory alloy driving spring |
JP6265195B2 (ja) * | 2015-10-01 | 2018-01-24 | トヨタ自動車株式会社 | 内燃機関の制御装置 |
CN106015704B (zh) * | 2016-07-29 | 2018-06-19 | 中煤科工集团西安研究院有限公司 | 一种发动机电磁关断阀 |
DE102016114492A1 (de) | 2016-08-04 | 2018-02-08 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Drehregler mit mitbewegbarem Kraftspeicher |
EP3636323A1 (de) * | 2018-10-11 | 2020-04-15 | Siemens Schweiz AG | Blockiervorrichtung für eine brandschutzklappe, blockiervorrichtungssystem und verfahren zum blockieren einer antriebsrichtung |
CN109176399A (zh) * | 2018-11-14 | 2019-01-11 | 国网上海市电力公司 | 一种9e燃机动叶片保险销安装工具及其安装方法 |
CN110094255A (zh) * | 2019-05-28 | 2019-08-06 | 曲阜天博汽车零部件制造有限公司 | 一种发动机系统、调温器及调温器防错装置 |
DE102020112548A1 (de) * | 2020-05-08 | 2021-11-11 | Auma Riester Gmbh & Co. Kg | Fail-Safe-Antrieb und Stellantrieb mit einem Fail-Safe-Antrieb |
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JPH03258916A (ja) * | 1990-03-07 | 1991-11-19 | Mitsubishi Electric Corp | 内燃機関の冷却水温制御装置 |
JPH0491314A (ja) * | 1990-08-06 | 1992-03-24 | Calsonic Corp | 水冷式エンジンの冷却制御装置 |
JPH0527463U (ja) * | 1991-09-19 | 1993-04-09 | 日本サーモスタツト株式会社 | 安全機構を備えたサーモスタツト |
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US4453668A (en) * | 1982-11-10 | 1984-06-12 | Caltherm Corporation | Fail-safe thermostatic valve |
US5111775A (en) * | 1989-12-06 | 1992-05-12 | Mitsubishi Denki K.K. | Cooling water temperature controlling apparatus |
FR2668853B1 (fr) * | 1990-11-05 | 1996-03-08 | Vernet Procedes | Dispositif de securite pour thermostat actionne par une capsule a cire dilatable. |
FR2703730B1 (fr) * | 1993-04-05 | 1995-06-23 | Vernet Sa | Perfectionnements aux circuits de refroidissement à liquide, pour moteurs à combustion interne. |
DE4401620A1 (de) * | 1994-01-20 | 1995-07-27 | Bayerische Motoren Werke Ag | Kühlanlage für einen Verbrennungsmotor eines Kraftfahrzeuges mit einem Thermostatventil, das ein elektrisch beheizbares Dehnstoffelement enthält |
-
1998
- 1998-04-07 JP JP10111538A patent/JPH11294163A/ja active Pending
-
1999
- 1999-03-16 TW TW088104027A patent/TW417006B/zh active
- 1999-04-06 CN CN99800478A patent/CN1263582A/zh active Pending
- 1999-04-06 CA CA002289018A patent/CA2289018A1/en not_active Abandoned
- 1999-04-06 EP EP99912118A patent/EP1035307A4/en not_active Withdrawn
- 1999-04-06 KR KR19997011241A patent/KR20010013250A/ko not_active Application Discontinuation
- 1999-04-06 WO PCT/JP1999/001814 patent/WO1999051863A1/ja not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03258916A (ja) * | 1990-03-07 | 1991-11-19 | Mitsubishi Electric Corp | 内燃機関の冷却水温制御装置 |
JPH0491314A (ja) * | 1990-08-06 | 1992-03-24 | Calsonic Corp | 水冷式エンジンの冷却制御装置 |
JPH0527463U (ja) * | 1991-09-19 | 1993-04-09 | 日本サーモスタツト株式会社 | 安全機構を備えたサーモスタツト |
Also Published As
Publication number | Publication date |
---|---|
KR20010013250A (ko) | 2001-02-26 |
EP1035307A1 (en) | 2000-09-13 |
EP1035307A4 (en) | 2007-06-13 |
CA2289018A1 (en) | 1999-10-14 |
TW417006B (en) | 2001-01-01 |
CN1263582A (zh) | 2000-08-16 |
JPH11294163A (ja) | 1999-10-26 |
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