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公开(公告)号：JP2006220010A
公开(公告)日：2006-08-24
申请号：JP2005031937
申请日：2005-02-08
Applicant: Toyota Motor Corp , トヨタ自動車株式会社
Inventor： YASUDA AKIO
CPC classification number: F02D41/047 , F02D41/0025
Abstract: PROBLEM TO BE SOLVED: To make the amount of combustion fuel appropriate immediately after alcohol concentration of fuel is changed, and to maintain an air fuel ratio at a desired value.
SOLUTION: This fuel injection control device for an internal combustion engine in which alcohol and gasoline can be used independently or by mixture as fuel is provided with a vapor pressure detecting means (Step S20) for detecting vapor pressure (evap) of fuel and vapor pressure correcting means (Steps S40, S90, S130, S140) for correcting fuel injection amount based on the detected vapor pressure (evap). In particular, out of the total amount of injected fuel, the amount of fuel adhering to a port wall face etc. and carried over in subsequent cycles relates to vapor pressure of the fuel. Therefore, due to this vapor pressure correction, the amount of combustion fuel immediately after alcohol concentration of fuel is changed can be made appropriate.
COPYRIGHT: (C)2006,JPO&NCIPIAbstract translation: 要解决的问题：为了使燃料的酒精浓度之后立即燃烧的燃料量变化，并且将空燃比维持在期望值。 解决方案：用于其中可以单独使用醇或汽油或作为混合燃料的内燃机的燃料喷射控制装置设置有用于检测燃料的蒸气压（蒸发）的蒸气压检测装置（步骤S20） 和蒸汽压力校正装置（步骤S40，S90，S130，S140），用于基于检测到的蒸汽压力（蒸发）来校正燃料喷射量。 特别地，在喷射燃料的总量中，附着在端口壁面等上并在随后的循环中承载的燃料的量与燃料的蒸汽压有关。 因此，由于该蒸汽压力校正，燃料的酒精浓度变化之后立即燃烧燃料量变化。 版权所有（C）2006，JPO＆NCIPI
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公开(公告)号：JP2005233135A
公开(公告)日：2005-09-02
申请号：JP2004045171
申请日：2004-02-20
Applicant: Toyota Motor Corp , トヨタ自動車株式会社
Inventor： YASUDA AKIO
CPC classification number: Y02T10/36
Abstract: PROBLEM TO BE SOLVED: To speed up a warmup of a catalyst of a multi-fuel engine. SOLUTION: When a condition for executing warmup is met, that is to say, the temperature of the catalyst estimated by the water temperature of an engine is below a reference value for the end of warmup (S20), the gasoline is selected as fuel that has a higher capacity of raising the temperature of the catalyst by an unburned component in comparison with CNG (S30). Since the supply of the gasoline is continued until the condition for executing warmup ceases to be met, the warmup of the catalyst material of a catalyst device can be promoted. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract translation: 要解决的问题：加速多燃料发动机的催化剂的预热。 解决方案：当满足执行预热的条件时，也就是说，由发动机的水温估计的催化剂的温度低于预热结束时的参考值（S20），选择汽油 作为与CNG相比，通过未燃烧部件具有提高催化剂的温度的能力的燃料（S30）。 由于继续供应汽油，直到不能满足执行预热的条件，所以可以促进催化剂装置的催化剂材料的预热。 版权所有（C）2005，JPO＆NCIPI
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公开(公告)号：JP2005201178A
公开(公告)日：2005-07-28
申请号：JP2004009613
申请日：2004-01-16
Applicant: Toyota Motor Corp , トヨタ自動車株式会社
Inventor： YASUDA AKIO
Abstract: PROBLEM TO BE SOLVED: To reduce operating time by liquid fuel while obtaining excellent startability. SOLUTION: This multi-fuel engine is constituted, in such a manner that liquid fuel is supplied (S30) at start of starting operation (S20) and the supply amount of the liquid fuel reaches the predetermined number of injection (reference value A) corresponding to such predetermined amount that a combustion chamber 105 is sealed. Accordingly, the supply amount of the liquid fuel can be extremely reduced, and emission (exhaust gas characteristics) can be improved. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract translation: 要解决的问题：通过液体燃料减少操作时间，同时获得出色的起动性。 解决方案：该多燃料发动机以在启动操作开始时提供液体燃料（S30）的方式构成（S20），并且液体燃料的供给量达到预定喷射次数（参考值 A）对应于燃烧室105被密封的预定量。 因此，能够极大地降低液体燃料的供给量，能够提高排出（废气特性）。 版权所有（C）2005，JPO＆NCIPI
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公开(公告)号：JP2005163755A
公开(公告)日：2005-06-23
申请号：JP2003407781
申请日：2003-12-05
Applicant: Toyota Motor Corp , トヨタ自動車株式会社
Inventor： YASUDA AKIO
Abstract: PROBLEM TO BE SOLVED: To provide a fault detection device for an injector capable of detecting a fault such as close adhesion in the injector.
SOLUTION: This fault detection device for the injector for detecting a fault caused in the injector 20 used in an internal combustion engine for gas fuel detects that the fault occurs in the injector based on a characteristic value related to opening and closing operation of the injector in a first condition in which the injector is driven by predetermined driving force and a characteristic value related to opening and closing operation of the injector in a second condition in which driving force of the injector is increased more than in the first condition. When the characteristic value related to the opening and closing operation of the injector is greatly changed (improved) due to increase in driving force of the injector when compared with a condition before driving force of the injector is increased, occurrence of the fault in the injector is detected.
COPYRIGHT: (C)2005,JPO&NCIPIAbstract translation: 要解决的问题：提供一种用于能够检测诸如喷射器中的紧密附着的故障的喷射器的故障检测装置。 解决方案：用于检测在用于燃气燃料的内燃机中使用的喷射器20中引起的故障的喷射器故障检测装置，基于与打开和关闭操作相关的特性值，检测喷射器中发生故障 所述喷射器处于其中所述喷射器由预定驱动力驱动的第一状态和与所述喷射器的驱动力比所述第一状态更多的第二状态下与所述喷射器的打开和关闭操作相关的特征值。 当与喷射器的驱动力之间的条件相比，由于喷射器的驱动力的增加而与喷射器的打开和关闭操作相关的特征值大大改变（改善）时，喷射器中的故障的发生 被检测到。 版权所有（C）2005，JPO＆NCIPI
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公开(公告)号：JP2003269257A
公开(公告)日：2003-09-25
申请号：JP2002066830
申请日：2002-03-12
Applicant: TOYOTA MOTOR CORP
Inventor： YASUDA AKIO
IPC: F02M21/02
Abstract: PROBLEM TO BE SOLVED: To secure independence of a gaseous fuel supply system when needed, to allow movement of gaseous fuel between the gaseous fuel supply systems as needed, and to prevent erroneous detection of fuel leakage, in an internal combustion engine in which each gaseous fuel supply system is independently disposed for each cylinder group. SOLUTION: A communicating pipe cutoff valve is disposed to a communicating pipe connecting between gaseous fuel supply systems, and is driven to be opened/closed by an ECU. With a state where the communicating pipe cutoff valve is closed, gaseous fuel supply systems are independent from each other. At that time, since the gaseous fuel supply system from which fuel leaks is identified by fuel leakage detection process, the fuel leakage is dealt with appropriately. Further, when one of vessel main valves are in closing malfunction state ('YES' at S104), the communication pipe cutoff valve is in an open state (S110). Since CNG is moved between the gaseous fuel supply systems, operation of the engine by all cylinders is kept. Thereby, the problem is solved. COPYRIGHT: (C)2003,JPO
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Patent Agency Ranking
公开(公告)号：JP2002235532A
公开(公告)日：2002-08-23
申请号：JP2001029874
申请日：2001-02-06
Applicant: TOYOTA MOTOR CORP
Inventor： GONO TAKESHI , TANAKA MASAAKI , AKITA KOICHI , YASUDA AKIO , HASHIMOTO HIROSHIGE , HONDA MITSUYUKI
Abstract: PROBLEM TO BE SOLVED: To provide an exhaust emission control device for an internal combustion engine enabling stratified charge combustion and capable of preventing worsening of exhaust emission by supplying secondary air at proper time to keep a bed temperature of catalyst and air-fuel ratio of exhaust air at proper values. SOLUTION: This exhaust emission control device is provided with an NOx storage reduction type three-way catalyst 38 storing nitrogen oxides in exhaust gas in the oxygen-excessive atmosphere, releasing and reducing the stored nitrogen oxides when oxygen concentration is reduced, and having a three-way catalyst function for purifying a toxic substance in the exhaust gas in the vicinity of a stoichiometric air-fuel ratio, a secondary air supply means 25 for supplying secondary air into an exhaust passage on the upstream side of the catalyst 38, and a catalyst bed temperature estimate means 24 for estimating a bed temperature of the catalyst 38 to supply secondary air when a bed temperature of the catalyst 38 exceeds a predetermined temperature during stratified charge combustion operation.
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公开(公告)号：JPH11336534A
公开(公告)日：1999-12-07
申请号：JP14367598
申请日：1998-05-26
Applicant: TOYOTA MOTOR CORP
Inventor： YASUDA AKIO
Abstract: PROBLEM TO BE SOLVED: To heat an exhaust emission control device efficiently by induction heating. SOLUTION: A catalyst for exhaust emission control is installed in an exhaust pipe 30 of an internal combustion engine. The catalyst is composed of a carrier 2, catalyst particles of metal held in dispersion on the surface of the carrier, and an induction heating coil 7 for letting flow an induced current. Further the catalyst is equipped with a magnetic substance emitting heat by the induced current, so that it has a current-carrying control means to heat the magnetic substance by actuating the coil 7 when the temperature of the catalyst is to be raised. The catalyst carrier is made of a nonmagnetic substance, and grains of the magnetic substance are dotted near the catalyst particles on the surface of the carrier as the nonmagnetic substance, and thereby the catalyst can be activated without consuming wasteful energy.
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公开(公告)号：JPH11294212A
公开(公告)日：1999-10-26
申请号：JP9182298
申请日：1998-04-03
Applicant: TOYOTA MOTOR CORP
Inventor： YASUDA AKIO
Abstract: PROBLEM TO BE SOLVED: To reduce NOx, HC, CO emitted from an engine. SOLUTION: An engine is provided with a CNG supply device 17 supplying CNG and a gasoline supply device 18 supplying gasoline. At normal operation only CNC is supplied to the engine while supply of gasoline is stopped. When a residual CNG amount is less than a lowest threshold, supply of CNG is stopped and supply of gasoline is started. Even when a CNG filling action is performed supply of CNG is not restarted, and when the residual gasoline amount is less than the lowest threshold supply of CNG is restarted.
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公开(公告)号：JPH11268620A
公开(公告)日：1999-10-05
申请号：JP7777798
申请日：1998-03-25
Applicant: TOYOTA MOTOR CORP
Inventor： YASUDA AKIO
Abstract: PROBLEM TO BE SOLVED: To reduce the space necessary for an energy recovery unit. SOLUTION: An inner space of a fuel tank 12 is divided into a fuel chamber 14 filled with CNG and an oil chamber 15 filled with oil using a movable piston 13 in a sealed state. During deceleration of the vehicle, an oil unit 24 is operated as a pump and oil is supplied to the oil chamber 15. In the above state, when the CNG within the fuel chamber 14 is compressed so as to accumulate energy in compression. The CNG within the fuel chamber 14 is expanded during high load operation or acceleration operation such that oil flows from the oil chamber 15. The oil unit 24 is actuated as a motor so as to discharge accumulated energy.
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10.发明专利
公开(公告)号：JPH09317567A
公开(公告)日：1997-12-09
申请号：JP13365296
申请日：1996-05-28
Applicant: TOYOTA MOTOR CORP
Inventor： YASUDA AKIO
Abstract: PROBLEM TO BE SOLVED: To ensure a smooth operation of a gas fuel shut-off valve. SOLUTION: An on-vehicle cylinder B is connected to a primary regulator R1 through a high pressure pipe PH, and a gas fuel shut-off valve V for shutting the pipe PH off is arranged in the pipe PH. A primary regulator R1 is connected to a secondary regulator R2 via a low pressure pipe PL. In the pipe PL an accommodation chamber C is arranged in the pipe PL and in the chamber C an electromagnetic actuator A for driving the valve V is accommodated. A second regulator R2 is connected to a gas fuel engine E through a gas fuel supply pipe PS. The actuator A is cooled by the gas fuel flowing in the chamber C from the regulator R1.
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