公开(公告)号：EP1430210A1

公开(公告)日：2004-06-23

申请号：EP02799358.3

申请日：2002-07-26

申请人： ROBERT BOSCH GMBH

发明人： BRITSCH, Heinz ,  WUERFEL, Gernot

IPC分类号： F02D41/40

CPC分类号： F02D41/402 ,  F02D41/3023 ,  F02D2041/389 ,  F02M45/02 ,  F02M65/008 ,  Y02T10/44

摘要： A method for avoiding an injector orifice internal coking of the spray orifices of a multi-orifice fuel injector of a direct injection internal combustion engine, e.g., of a motor vehicle, is provided. Fuel is injected into a combustion chamber of the internal combustion engine by multiple injections. The fuel is injected by a first main injection during the intake stroke and by a subsequent postinjection during the compression stroke before the ignition time. Thereby, during a long operation of the internal combustion engine, especially in a homogeneous operation, the injection time does not have to be continually increased in order to compensate for the increasingly shrinking cross section of the spray orifices.

公开(公告)号：EP0733160A1

公开(公告)日：1996-09-25

申请号：EP95928417.0

申请日：1995-08-11

申请人： ROBERT BOSCH GMBH

发明人： REMBOLD, Helmut ,  HAAG, Gottlob ,  BRITSCH, Heinz ,  STUTZENBERGER, Heinz ,  MUELLER, Uwe

IPC分类号： F02D1 ,  F02M59 ,  F02M61 ,  F02M69 ,  F02B75

CPC分类号： F02D1/06 ,  F02B2075/025 ,  F02D1/025 ,  F02D1/065 ,  F02M69/10

摘要： With prior art two-stroke fuel-injection systems, which inject the fuel directly into the combustion chamber by means of a fuel-injection valve, the engine operating parameters which affect the amount of fuel delivered by the fuel-injection pump can only be modified with difficulty and this requires additional equipment to be fitted. The fuel-injection system (1) proposed for a two-stroke engine (4) has a fuel-injection pump (2) with an adjustment device (90) to which the pulsating pressure in the interior (10) of the engine crankcase (11) is fed through an impulse pressure line (100) in order to meter the amount of fuel delivered by the pump in dependence on the pressure in the crankcase, thus ensuring that the optimum amount of fuel is delivered for combustion and hence reducing the exhaust-gas emission and fuel consumption of the engine. This fuel injection system is intended for use in two-stroke internal-combustion engines.

公开(公告)号：EP0964989B1

公开(公告)日：2003-11-12

申请号：EP98966554.2

申请日：1998-12-17

申请人： ROBERT BOSCH GMBH

发明人： REMBOLD, Helmut ,  FRANK, Bruno ,  HAAG, Gottlob ,  BRITSCH, Heinz ,  STUTZENBERGER, Heinz ,  MUELLER, Uwe

IPC分类号： F02D41/14 ,  F02D35/02

CPC分类号： F02D35/021 ,  F02D41/1458

摘要： Disclosed is a method for regulating the air-fuel mixture in an internal combustion engine, wherein the rate of combustion (WF) of the air-fuel mixture is detected as a measure of the above-mentioned proportion. To detect the above-mentioned measure, the direction of modification of the mean rate of combustion (WF) is detected in addition to the absolute value of the rate of combustion (WF) as a function of the air-fuel mixture in the above-mentioned absolute value.

公开(公告)号：EP0733160B1

公开(公告)日：1999-12-08

申请号：EP95928417.5

申请日：1995-08-11

申请人： ROBERT BOSCH GMBH

发明人： REMBOLD, Helmut ,  HAAG, Gottlob ,  BRITSCH, Heinz ,  STUTZENBERGER, Heinz ,  MUELLER, Uwe

IPC分类号： F02D1/06 ,  F02M69/10

CPC分类号： F02D1/06 ,  F02B2075/025 ,  F02D1/025 ,  F02D1/065 ,  F02M69/10

摘要： With prior art two-stroke fuel-injection systems, which inject the fuel directly into the combustion chamber by means of a fuel-injection valve, the engine operating parameters which affect the amount of fuel delivered by the fuel-injection pump can only be modified with difficulty and this requires additional equipment to be fitted. The fuel-injection system (1) proposed for a two-stroke engine (4) has a fuel-injection pump (2) with an adjustment device (90) to which the pulsating pressure in the interior (10) of the engine crankcase (11) is fed through an impulse pressure line (100) in order to meter the amount of fuel delivered by the pump in dependence on the pressure in the crankcase, thus ensuring that the optimum amount of fuel is delivered for combustion and hence reducing the exhaust-gas emission and fuel consumption of the engine. This fuel injection system is intended for use in two-stroke internal-combustion engines.

公开(公告)号：EP1430210B1

公开(公告)日：2005-03-30

申请号：EP02799358.3

申请日：2002-07-26

申请人： ROBERT BOSCH GMBH

发明人： BRITSCH, Heinz ,  WUERFEL, Gernot

IPC分类号： F02D41/40

CPC分类号： F02D41/402 ,  F02D41/3023 ,  F02D2041/389 ,  F02M45/02 ,  F02M65/008 ,  Y02T10/44

摘要： A method for avoiding an injector orifice internal coking of the spray orifices of a multi-orifice fuel injector of a direct injection internal combustion engine, e.g., of a motor vehicle, is provided. Fuel is injected into a combustion chamber of the internal combustion engine by multiple injections. The fuel is injected by a first main injection during the intake stroke and by a subsequent postinjection during the compression stroke before the ignition time. Thereby, during a long operation of the internal combustion engine, especially in a homogeneous operation, the injection time does not have to be continually increased in order to compensate for the increasingly shrinking cross section of the spray orifices.

公开(公告)号：EP0964989A1

公开(公告)日：1999-12-22

申请号：EP98966554.0

申请日：1998-12-17

申请人： ROBERT BOSCH GMBH

发明人： REMBOLD, Helmut ,  FRANK, Bruno ,  HAAG, Gottlob ,  BRITSCH, Heinz ,  STUTZENBERGER, Heinz ,  MUELLER, Uwe

IPC分类号： F02D45 ,  F02D35 ,  F02D41

CPC分类号： F02D35/021 ,  F02D41/1458

摘要： Disclosed is a method for regulating the air-fuel mixture in an internal combustion engine, wherein the rate of combustion (WF) of the air-fuel mixture is detected as a measure of the above-mentioned proportion. To detect the above-mentioned measure, the direction of modification of the mean rate of combustion (WF) is detected in addition to the absolute value of the rate of combustion (WF) as a function of the air-fuel mixture in the above-mentioned absolute value.