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1. 发明专利

JPH1172049A PURGE CONTROLLER OF INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH1172049A
公开(公告)日：1999-03-16
申请号：JP23399397
申请日：1997-08-29
申请人： MITSUBISHI MOTORS CORP
发明人： MURAGUCHI TOMOKAZU , ISHII KAZUE
IPC分类号： F02M25/08 , F02D41/02 , F02D41/14
摘要： PROBLEM TO BE SOLVED: To increase a purge flow rate without impairing the drivability and enable efficient purge control which makes an air-fuel ratio constant by obtaining a purge concentration compensation coefficient as a new parameter from estimated purge concentration to feedback-control an air-fuel ratio. SOLUTION: A purge flow rate which is a flow rate of purge gas which is adjusted by a purge control means 6 is set or a purge rate is set in advance base on the number of revolutions and deposit efficiency. Based on an air-fuel ratio (A/F) feedback compensation coefficient as a controlled variable used in the A/F feedback control of in an injector control means 7 and the above- mentioned purge rate, an estimate means 11 which estimates concentration of purge gas, namely, purge concentration, is provided. A concentration compensation coefficient calculating means 12 which obtains the purge concentration compensation coefficient used in the A/F feedback control according to the purge concentration estimated by the estimate means 11 and the purge rate is provided.

2. 发明专利

JPH08253039A FUEL STORING DEVICE 失效
公开(公告)号：JPH08253039A
公开(公告)日：1996-10-01
申请号：JP6121695
申请日：1995-03-20
申请人： MITSUBISHI MOTORS CORP
发明人： ANDO YOICHIRO , MURAGUCHI TOMOKAZU , KOYAMA TOSHIHIRO
IPC分类号： B60K15/077 , B60K15/04
摘要： PURPOSE: To provide a fuel storing device in which evaporated gas is prevented from being discharged from an oil filler port to the atmosphere, and oil supplying by an evaporated gas sucking-type oil supplying system is enabled. CONSTITUTION: An atmosphere introducing hole 21 is formed between an oil filler port 4 and a seal surface on the pipe wall of a filler neck 16, and the atmosphere is introduced into the filler neck 16 through this atmosphere introducing hole 21. Accordingly, suction to a fuel storage tank side is performed through a suction duct 10 bonded to the oil filler port 4 in performing oil supplying, and air on the periphery of an oil supplying nozzle 6 is sucked to an oil supplying pipe 2 by aspiration in oil supplying, however, pressure in the oil supplying pipe 2 is hardly decreased since the atmosphere is introduced from the atmosphere introducing hole 21, and stopping of oil supplying by the operation of an oil supplying stop sensor is not generated.

3. 发明专利

JPH0842406A EVAPORATED FUEL TREATING EQUIPMENT 失效
公开(公告)号：JPH0842406A
公开(公告)日：1996-02-13
申请号：JP17697794
申请日：1994-07-28
申请人： MITSUBISHI MOTORS CORP
发明人： KUNIMITSU MASABUMI , MORI SEIJI , MURAGUCHI TOMOKAZU , ANDO YOICHIRO
IPC分类号： F02M25/08 , F02M37/00 , F02M37/04
摘要： PURPOSE:To make improvements in the adsorptive function of evaporated fuel in time of fueling and its desorption function in time of engine driving by connecting a canister to the upper part of a fuel tank, and selecting a return passage making the excess fuel of engine flowing back, and another return passage through an inner part of the canister selectively by means of a fuel quantity in the tank. CONSTITUTION:A pipe 11 is stored as meandering in an adsorbent 8 of a canister 6, and its one end 11a pierces through vertically on the top 1a of a fuel tank. In addition, one end of a fuel return pipe 12 for making the excess fuel of an engine flow back to the fuel tank pierces through vertical the tank top 1a. Further, this pipe 11 serves as another return pipe 11 for making the return fuel pass through an inner part of the canister 6 and flow back to the fuel tank. A selector mechanism 13 switches each one end 11a or 12a of the return pipe 11 or fuel return pipe 12 selectively after closing it according to a fuel quantity in the tank.

4. 发明专利

JPH06129309A LIQUID GASOLINE IN CANISTER PROCESSING SYSTEM 失效
公开(公告)号：JPH06129309A
公开(公告)日：1994-05-10
申请号：JP27735092
申请日：1992-10-15
申请人： MITSUBISHI MOTORS CORP
发明人： MURAGUCHI TOMOKAZU
IPC分类号： F02M25/08 , F02M37/00
摘要： PURPOSE:To prevent deterioration of active carbon by returning liquid gasoline stagnated on the bottom of a canister to a fuel tank surely. CONSTITUTION:A liquid gasoline processing system is provided with a fuel tank 31 holding liquid gasoline, a canister 33 provided with a gasoline vapour take in port and having a return line connection port on its bottom, a first piping 36 for communicating the return line 36 connection port of the canister with the upper space of the fuel tank, a second piping 35 for communicating the gasoline vapour take in port or the canister with the upper space of the tank, a first open/close valve 41 provided on the first piping and second open/ close valve 40 provided on the second piping. This system is also composed of an ECU 51 which can make such control that the liquid gasoline stagnated in the upper space of the fuel tank can be sent to the canister by closing this first open/close valve and also controlling the second open/close valve openly and thereafter the liquid gasoline stagnated on the bottom of the canister can be returned to the fuel tank by controlling the second open/close valve closely and also controlling the first open/close valve openly.

5. 发明专利

JPH08135521A EVAPORATED FUEL TREATING DEVICE 失效
公开(公告)号：JPH08135521A
公开(公告)日：1996-05-28
申请号：JP27481794
申请日：1994-11-09
申请人： MITSUBISHI MOTORS CORP
发明人： KUNIMITSU MASABUMI , MORI SEIJI , MURAGUCHI TOMOKAZU , ANDO YOICHIRO
IPC分类号： F02M25/08
摘要： PURPOSE: To reduce size by increasing a purge capacity of a canister. CONSTITUTION: An evaporating fuel treating device is provided with a canister 6 which is interconnected to the top of a fuel tank 1 and adsorbs evaporating fuel, a first opening and closing valve 15 installed in a purge path 14 of an intake system 12 of an engine 11, a second opening and closing valve 22 installed in an air venting path 6c of the canister 6, and a control means 16 which controls the first opening and closing valve 15 and the second opening and closing valve 22 and also, when the first control valve 15 is opened, opens the second opening and closing valve 22 after closing it for a specified time.

6. 发明专利

JPH0893577A VAPOR FUEL PROCESSING DEVICE 失效
公开(公告)号：JPH0893577A
公开(公告)日：1996-04-09
申请号：JP14920495
申请日：1995-06-15
申请人： MITSUBISHI MOTORS CORP
发明人： KUNIMITSU MASABUMI , MORI SEIJI , MURAGUCHI TOMOKAZU , ANDO YOICHIRO
IPC分类号： B60K15/077 , F02M25/08 , F02M37/00
摘要： PURPOSE: To miniaturize a canister by reducing the quantity of vapor fuel generated in a fuel tank during fuel supply. CONSTITUTION: A processing device has a canister 6 to adsorb vapor fuel in the fuel system of an engine; a vent passage 5 to communicate a fuel tank 1 with the canister; and a vent circulation passage 11 to communicate the vent passage with the filler neck 2 of the fuel tank, and the bore of the vent circulation passage is decided to be smaller than the bore of the vent passage.

7. 发明专利

JPH0842413A EVAPORATED FUEL TREATING EQUIPMENT 失效
公开(公告)号：JPH0842413A
公开(公告)日：1996-02-13
申请号：JP17697694
申请日：1994-07-28
申请人： MITSUBISHI MOTORS CORP
发明人： KUNIMITSU MASABUMI , MORI SEIJI , MURAGUCHI TOMOKAZU , ANDO YOICHIRO
IPC分类号： F02M25/08 , F02M33/00 , F02M37/00
摘要： PURPOSE:To promote the miniaturization of evaporated fuel treating equipment in heightening the adsorptive function of evaporated fuel in time of fueling and the desorption function in time of engine driving respectively, by heating a canister at a time when a fuel residual quantity in a fuel tank is still abundant but when it is little, suspending the heating the other way. CONSTITUTION:A float 12 moves up and down according to the height of a level of fuel in a fuel tank 1, therefore when a fuel quantity is much, it goes up, and a movable contact 13c comes into contact with two fixed contacts 13a and 13b, whereby a switch 13 is turned on. Likewise, the float 12 goes down if the quantity in the tank 1 becomes lessened attendingly, and when the movable contact 13c separates from these fixed contacts 13a and 13b, the switch 13 is turned off. The fuel quantity in the case of the switch 13 turned off is a time it has come to that requires an oil charge. On end of an electric heater 11 stored in a adsorbent 8 of a canister 6 is connected to the contact 13a of the switch 13, and the other end is connected to a contact 15a of a key switch 15, respectively.

8. 发明专利

JPH05171974A CONTROL FOR ENGINE AIR FUEL RATIO 失效
公开(公告)号：JPH05171974A
公开(公告)日：1993-07-09
申请号：JP34320891
申请日：1991-12-25
申请人： MITSUBISHI MOTORS CORP
发明人： MURAGUCHI TOMOKAZU , SAEGUSA SHINJI
IPC分类号： F02D41/06
摘要： PURPOSE:To ensure good drivability under any driving condition immediately after starting an engine at a low temperature. CONSTITUTION:A basic drive time determining means 51 determines the basic drive time of an injector 8 based on the information from an air flow sensor 11 and a crank angle sensor 21. Air fuel ratio is compensated by an air fuel ratio compensating means 53 which sets an air-fuel compensating coefficient KAF, and a compensating coefficient K' is set by a compensating coefficient setting means 54 after starting. K' and KAF are selected by a selector 58, and are compensated by an air fuel ratio compensating means 52 and a dead time compensating means 57 at the time of feedback. Moreover, an indicator 8 is controlled with a selector 55 by obtaining the input of a compensating means 50 at the time of starting. It is thus possible to ensure good drivability suited to the driving condition immediately after starting.

9. 发明专利

JPH09264220A FUEL STORAGE DEVICE 失效
公开(公告)号：JPH09264220A
公开(公告)日：1997-10-07
申请号：JP7452796
申请日：1996-03-28
申请人： MITSUBISHI MOTORS CORP
发明人： KUNIMITSU MASABUMI , MORI SEIJI , MURAGUCHI TOMOKAZU , ANDO YOICHIRO
IPC分类号： B60K15/01 , F02M37/00 , F16K24/04
摘要： PROBLEM TO BE SOLVED: To prevent boiloff of fuel just after oiling by narrowing a vent passage when the liquid surface height of fuel in a fuel tank attains a first liquid surface height, and arranging a valve means for closing the vent passage when the liquid surface height attains a level higher than the first liquid surface height. SOLUTION: Fuel evaporation gas in the upper space in a fuel tank is ventilated to an atmosphere side through a vent passage 222a by oiling discharging pressure of fuel at the time of oiling of fuel. When the liquid surface height of fuel in the fuel tank attains a first liquid surface height, the vent passage 222a is narrowed by valve means 230, 240, 242. Fuel evaporation gas in condition compressed by the oiling discharging pressure is ventilated to the atmosphere side through the vent passage 222a narrowed continuously by the valve means 230, 240, 242 until the liquid surface height attains a second liquid surface height. It is thus possible to suitably prevent boiloff of fuel caused by expansion of compressed fuel evaporation gas.

10. 发明专利

JPH09119351A EVAPORATION FUEL TREATMENT DEVICE 失效
公开(公告)号：JPH09119351A
公开(公告)日：1997-05-06
申请号：JP32019395
申请日：1995-12-08
申请人： MITSUBISHI MOTORS CORP
发明人： KUNIMITSU MASABUMI , MORI SEIJI , MURAGUCHI TOMOKAZU , KIMURA YASUO , ANDO YOICHIRO
IPC分类号： F02M25/08 , F02M37/00
摘要： PROBLEM TO BE SOLVED: To prevent mud and dust contained in the inflow atmosphere from invading the inside of an opening and closing valve, so as to improve reliability of the opening and closing valve operation, by providing the opening and closing valve and an air filter in this order in an atmosphere releasing passage of a canister, providing an atmosphere passage on the atmosphere releasing side of the canister, and providing the opening and closing means on it. SOLUTION: A selector valve 15 is normally opened by de-energisation of a solenoid, oil is supplied to a fuel tank in this state, evaporation fuel is allowed to flow from an inlet 10a into a canister 10 when the evaporation fuel are generated in great quantities, and fuel component is adsorbed by an adsorbent 11. After that, air is allowed to flow out from an atmosphere releasing port 10c to an atmosphere releasing passage 14 through the selector valve 15, a one-way valve 19 is opened, and the air is discharged from an atmosphere port 19c. When negative pressure acts on the canister 10 after an engine is operated, the one-way valve 19 is closed by pressure-contact of a float 19a with a valve seat 19b, and clean air have been passed an air filter 16 is sucked into the canister 10.

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