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1. 发明专利

JPH07224734A FUEL ADDITIVE SUPPLY DEVICE 失效
公开(公告)号：JPH07224734A
公开(公告)日：1995-08-22
申请号：JP1837694
申请日：1994-02-15
申请人： TOYOTA MOTOR CORP
发明人： NIREI YASUYUKI , MATSUURA KOZO
IPC分类号： B60K15/03 , F02M25/00 , F02M25/022 , F02M37/00
摘要： PURPOSE:To realize a fuel additive supply device for supplying a fuel additive to the fuel system of an internal combustion engine for an automobile in a simple constitution and at a low cost without electric control. CONSTITUTION:An additive tank 1 for storing an additive is provided in the vicinity of a supply port of a fuel passage 3 to a fuel tank, the additive tank 1 and the fuel passage 3 are connected to each other by a communicating path 2, and an additive measuring chamber 14 is disposed in the midway of the communicating path 2. A non-return valve 17 is provided on the upstream side of the additive measuring chamber 14, and a pressure valve 16 is provided on the downstream side thereof. A piston 13 is disposed in the additive measuring chamber 14, and the piston 13 is connected to a fuel lid 4 by a link 43. The piston 13 is pressed by opening the fuel lid 4 to pressurize the interior of the additive measuring chamber 14 and discharge the additive. The piston 13 is pulled by closing the fuel lid 4 to reduce the pressure in the additive measuring chamber 14 and to draw the additive from the additive tank 1 into the measuring chamber 14.

2. 发明专利

JPH06101554A CYLINDER INJECTION TYPE INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH06101554A
公开(公告)日：1994-04-12
申请号：JP6467092
申请日：1992-03-23
申请人： TOYOTA MOTOR CORP
发明人： MATSUURA KOZO
IPC分类号： F02D41/40 , F02B17/00 , F02D41/02 , F02D41/04 , F02D41/34
摘要： PURPOSE:To ensure good ignition even at low intake temperature in a cylinder injection type internal combustion engine and to reduce the rate of generation of NOx even at high intake temperature. CONSTITUTION:First fuel injection F is performed during engine intake stroke and air-fuel mixture to be distributed over the inside of the whole combustion chamber 53 is created by the fuel injected. Second fuel mixture F is created by the injected fuel in a restricted area inside the combustion chamber 53. The air-fuel mixture G is ignited by means of an ignition plug 54 and the air- fuel mixture distributed over the inside of the whole combustion chamber 53 is fired by the ignited air-fuel mixture and burned. The lower the intake temperature, the greater the percentage of the second injection quantity in the total injection quantity of fuel.

3. 发明专利

JPH0571383A INTER-CYLINDER INJECTION TYPE INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH0571383A
公开(公告)日：1993-03-23
申请号：JP22792191
申请日：1991-09-09
申请人： TOYOTA MOTOR CORP
发明人： MATSUURA KOZO
IPC分类号： F02D41/02 , F02D41/04 , F02D41/34
摘要： PURPOSE:To maintain an air-fuel ratio of fuel-air mixture, making a fire, at an air-fuel ratio by which excellent ignition is practicable. CONSTITUTION:First fuel injection F is effected during the suction stroke of an engine to generate fuel-air mixture dispersed throughout the inner whole of a combustion chamber 53 by means of the injection fuel. At the terminal state of a compression stroke, second fuel injection F is effected to generate fuel-air mixture G in a region, limited in the combustion chamber 53, by means of the injection fuel. The fuel-air mixture G is ignited by means of an ignition plug 54 and the fuel-air mixture dispersed throughout the inner whole of the combustion chamber 53 is burnt by means of the ignited fuel-air mixture serving to make a fire. An average air-fuel ratio of the whole of fuel-air mixture generated through the first fuel injection F and the second fuel injection F is controlled to a target average air-fuel ratio. The more the target average air-fuel ratio is increased, the more the percentage of a second injection amount to the total fuel injection among is increased.

4. 发明专利

JPH03182622A FAILURE DIAGNOSING METHOD FOR AIR SUPPLY DEVICE IN INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH03182622A
公开(公告)日：1991-08-08
申请号：JP31889389
申请日：1989-12-11
申请人： TOYOTA MOTOR CORP
发明人： MATSUURA KOZO , MORI KENJI
IPC分类号： F02B25/20 , F02B29/08
摘要： PURPOSE:To discriminate a specific cylinder in defective operation automatically and immediately by judging the operation of a control valve to this specific cylinder to be defective at the time of the difference value between the rotating speed of the specific cylinder at its explosion stroke and the average rotating speed of all the cylinders exceeding the specified value. CONSTITUTION:In the idling state, a cutoff valve 4 closes the intermediate part of a main intake passage 2 in such a way as to leave the sufficient volume to hold the specified air quantity necessary for an intake port 7 to maintain idling. A control valve 5 switches an auxiliary intake passage 3 by-passing the cutoff valve 4. Hereupon, an ECU 13 detects the rotating speed of a crankshaft every explosion stroke of each cylinder 1, determines each detected rotating speed as the rotating speed of the specific cylinder 1 at its explosion stroke at that time and compares each rotating speed with the average rotating speed of all the cylinders. When the difference value between both rotating speed exceeds the specified value, the ECU judges the operation of the control valve 5 to the specific cylinder to be defective. The specific cylinder 1, to which the defective operation of the control valve 5 is generated, can be thereby discriminated automatically and immediately.

5. 发明专利

JP2000135925A NATURAL GAS AUTOMOBILE WITH ABSORBING TYPE NATURAL GAS STORAGE TANK 失效
公开(公告)号：JP2000135925A
公开(公告)日：2000-05-16
申请号：JP31127598
申请日：1998-10-30
申请人： TOYOTA MOTOR CORP
发明人： MATSUURA KOZO , NARUOKA TAKAO , TERAJIMA YUKIO
IPC分类号： B60K11/04 , B60K15/03 , F01P3/12 , F02M21/02 , F17C11/00
摘要： PROBLEM TO BE SOLVED: To provide a natural gas automobile having an absorbing type natural gas storage tank capable of cooling an adsorbent making effective use of on- vehicle equipment at the time of charging natural gas. SOLUTION: Cooling water for an engine 12 is circulated by a water pump 22 to a storage tank 10 storing an adsorbent inside to adsorb and store natural gas which is fuel for the engine 12. In the case of charging the storage tank 10 with natural gas, an ECU 16 closes a control valve 20 to cut off the engine 12 from a cooling water circulating path, and cooling water cooled by a radiator 24 is supplied to the storage tank 10 and used to cool the adsorbent. The radiator 24 which is existing equipment can therefore be used to cool the storage tank 10 so as to dispense with an extra device.

6. 发明专利

JP2000130695A METHOD OF RESERVING NATURAL GAS IN ABSORPTION TYPE NATURAL GAS STORAGE TANK 失效
公开(公告)号：JP2000130695A
公开(公告)日：2000-05-12
申请号：JP30510698
申请日：1998-10-27
申请人： TOYOTA MOTOR CORP
发明人： MATSUURA KOZO , NARUOKA TAKAO , TERAJIMA YUKIO
IPC分类号： F17C11/00 , F17C6/00
摘要： PROBLEM TO BE SOLVED: To provide a method of reserving a natural gas in an absorption type natural gas storage tank, which can restrain adsorbent from raising its temperature when the natural gas is reserved in the storage tank. SOLUTION: A liquefied natural gas is fed into an adsorption type natural gas storage tank 12 mounted on a natural gas engine automobile and incorporated therein with adsorbent, from an LNG tank 10. In this phase, the quantity of a liquefied natural gas fed into the storage tank 12 is monitored by a pressure sensor 16. When the pressure detected by the pressure sensor 16 reaches a predetermined value, a shut-off valve 18 is closed so as to stop the supply of the liquefied natural gas. Since the temperature of the liquefied gas is low, the temperature rise of the adsorbent caused by heat of adsorption when the natural gas being adsorbed to the adsorbent in the tank 12, can be held to be low, thereby it is possible to restrain the adsorbed amount from lowering.

7. 发明专利

JPH09311797A ABNORMALITY DETECTION DEVICE FOR WATCHDOG COUNTER CIRCUIT AND ABNORMALITY DETECTION DEVICE FOR ELECTRONIC CIRCUIT 失效
公开(公告)号：JPH09311797A
公开(公告)日：1997-12-02
申请号：JP12808796
申请日：1996-05-23
申请人： TOYOTA MOTOR CORP
发明人： MATSUURA KOZO
IPC分类号： G06F11/14 , G06F1/04 , G06F1/24 , G06F11/00 , G06F11/30 , H03K5/19
摘要： PROBLEM TO BE SOLVED: To recognize a state where a watchdog counter circuit (WDC circuit) cannot appropriately detect a RUN pulse signal to be abnormal on a device for detecting the abnormality of the WDC circuit. SOLUTION: The WDC circuit 12 supplying a reset signal to a CPU when the FUN pulse signals which are to be emitted from the CPU 10 at every prescribed intervals are not detected for every appropriate period is provided. A rest counter for counting the number of times for emitting the reset signals from the WDC circuit 12 is provided. An abnormality recognition part recognizing abnormality that the RUN pulse signal cannot appropriately be detected in the WDC circuit when the counting value of the reset counter is not less than a prescribed value is provided.

8. 发明专利

JP2000136756A NATURAL GAS AUTOMOBILE HAVING ABSORBED NATURAL GAS STORAGE TANK 失效
公开(公告)号：JP2000136756A
公开(公告)日：2000-05-16
申请号：JP31127198
申请日：1998-10-30
申请人： TOYOTA MOTOR CORP
发明人： MATSUURA KOZO , NARUOKA TAKAO , TERAJIMA YUKIO
IPC分类号： B60K15/03 , F02M21/02 , F17C11/00
摘要： PROBLEM TO BE SOLVED: To provide a natural gas motor vehicle having an absorbed natural gas storage tank for improving the starting ability of an engine. SOLUTION: A buffer tank 18 is provided on the way of a pipe for supplying natural gas from a storage tank 10, in which absorbent is stored for absorbing and storing natural gas, to an engine 12 and a shut-off valve 20 is provided between the storage tank 10 and the buffer tank 18. During stopping of the engine 12, the shut-off valve 20 is closed and the buffer tank 18 is separated from the storage tank 10 for compression storage of natural gas under the then pressure. During next starting of the engine 12, natural gas under compression storage is supplied from the buffer tank 18 for starting the engine 12. Then, an engine cooling water increased in temperature is supplied to the storage tank 10 and the shut-off valve 20 is open when the pressure of a gas phase portion is over a preset value.

9. 发明专利

JPH11230499A STORAGE DEVICE FOR GASEOUS HYDROCARBON 失效
公开(公告)号：JPH11230499A
公开(公告)日：1999-08-27
申请号：JP3071198
申请日：1998-02-13
申请人： TOYOTA MOTOR CORP
发明人： MATSUURA KOZO
IPC分类号： F17C11/00
摘要： PROBLEM TO BE SOLVED: To provide a storage device for gaseous hydrocarbon capable of increasing the utilization factor of adsorbed and stored gaseous hydrocarbon. SOLUTION: Gaseous hydrocarbon is adsorbed in an adsorbent 12 incorporated in a storage tank 10 and fed to an internal combustion engine. The storage tank 10 is provided with a moving wall 16 driven through a crank 14 by the output of the internal combustion engine, and through displacement of the moving wall 16, a pressure fluctuation is applied on the internal part of the storage tank 10. Through the pressure fluctuation, an amount of gaseous hydrocarbon at a gas phase part is increased based on a difference between adsorption and desorption speeds of gaseous hydrocarbon to and from the adsorbent 12, and the utilization factor of gaseous hydrocarbon is improved.

10. 发明专利

JPH0918313A METHOD FOR CONTROLLING LOAD DRIVING CIRCUIT 失效
公开(公告)号：JPH0918313A
公开(公告)日：1997-01-17
申请号：JP16625995
申请日：1995-06-30
申请人： TOYOTA MOTOR CORP
发明人： TANAKA YASUHIRO , MATSUURA KOZO
IPC分类号： H03K17/687 , H02P7/29 , H02P7/291 , H03K17/00
摘要： PURPOSE: To suppress power loss by a current generated by the counter electromotive force of a motor in a method for controlling a pulse width modulation driving circuit for controlling the speed of a DC motor. CONSTITUTION: When PWM signals are imparted to the gates 24 and 44 of driving transistors 20 and 40 and the gates 14 and 34 of the driving transistors 10 and 30 are connected to ground, the driving transistor 10 is held ON and the transistor 30 is held OFF. Also, when the PWM signals are shifted from a high level to a low level, the driving transistor 20 is shifted to an ON state. Thus, the current by the counter electromotive force of the DC motor 60 is made to flow to the driving transistor 20 and is hardly made to flow to a diode 22 formed between the source and the drain of the driving transistor 20. As a result, the power loss in the diode 22 is suppressed.

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