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WO/1999/066193A1 |
The invention relates to a valve control unit (1) for a fuel injection valve, comprising two interconnected valve control compartments (3, 4). An end member (6) of a mobile valve control piston (5) can move in the first compartment (3) w...
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WO/1999/063217A1 |
The invention relates to a pumping device comprising a pump assembly (4) which is configured as a reciprocating piston pump. The pump displaces fluid by means of a reciprocating piston (6, 7). The inventive pumping device also comprises ...
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WO/1999/061784A1 |
A hydraulically-actuated fuel injector (10) includes an injector body (11) that defines a high pressure inlet (15), a low pressure drain (16), an upper actuation fluid cavity (41), a lower actuation fluid cavity (44), and a nozzle outlet...
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WO/1999/061778A1 |
A method of utilizing the first valve bounce is used in a diesel engine having a solenoid valve controlled fuel injection system, wherein the solenoid actuacted valve is movable between a fully closed position for injection and a fully o...
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WO/1999/060265A1 |
A hydraulically-actuated fuel injector (10) includes an injector body (11) that defines an actuation fluid inlet (13), a first actuation fluid cavity (34), a second actuation fluid cavity (38) and a nozzle outlet (16). A piston (35) is p...
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WO/1999/057431A1 |
A solenoid actuated valve (30, 130) includes a valve body (31, 131) that defines a first passage (13, 113) and a second passage (16, 116). The solenoid (12, 112) is attached to the valve body (31, 131) and has an armature (28, 128). A mu...
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WO/1999/056015A1 |
The invention relates to a fuel injection valve for internal combustion engines, comprising a valve body (1) fixed by an adjusting nut to a valve support body, in which a valve member (11) can be axially displaced in a bore hole (9). The...
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WO1999030025A9 |
The invention is directed towards a method for adjusting the NO2 to NO content of a diesel engine's exhaust without affecting engine performance. The NO2 to NO ratio is adjusted by varying the amount and timing of secondary hydrocarbon i...
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WO/1999/032766A1 |
A direct injection spark ignition engine is disclosed in which fuel is injected during a compression stroke of each combustion chamber (30) for stratified mode operation. Additional fuel is injected into each combustion chamber (30) duri...
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WO/1999/030024A1 |
The invention relates to a method for producing NO¿x? reductants by injecting hydrocarbon into a diesel engine's combustion chamber during the expansion cycle. The secondary injected hydrocarbon is formed, under appropriate conditions, ...
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WO/1999/030028A1 |
The invention relates to a fuel injector for auto-ignition internal combustion engines. Said injector comprises a body (30) with a conical seat surface (32) from which injection openings (34) originate. It also comprises a valve needle w...
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WO/1999/028616A1 |
The invention relates to a fuel injection valve for internal combustion engines, comprising a valve member (11) that can be displaced in the axial direction in a valve body (1). Said valve member cooperates with a valve seat surface (15)...
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WO/1999/022129A1 |
The invention relates to a method for operating a piston internal combustion engine, especially an auto-igniting piston internal combustion engine, in which the exhaust exiting the cylinders (I, II) is guided through at least one mechani...
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WO/1999/022128A1 |
The invention relates to a method for operating a piston internal combustion engine in which the required fuel quantity for the respective combustion cycle is measured by a motor control (5) according to the load requirement and is direc...
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WO/1999/015779A1 |
The present invention relates to an injection valve for a fuel injection system. In order to provide a stepped modification of the active section of an injection opening, said valve uses spring/abutment system which comprises a first pre...
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WO/1999/015783A1 |
The present invention relates to a fuel injection device for internal combustion engines, wherein the opening and closing movement of a fuel injection valve (1) is controlled by the pressure in pressure chamber (9) acting on a pressure s...
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WO/1999/013214A1 |
The invention relates to a fuel injection valve for internal combustion engines comprising a valve member (5) moving outwards from the valve body (1). At least two axially superimposed rows of injection holes (23) are provided for on sai...
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WO/1999/006690A1 |
The invention concerns a fuel injection device for internal combustion engines, wherein the displacement of a member closing the fuel injection valve is controlled by pressure prevailing in a control chamber (25). The pressure prevailing...
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WO/1999/004160A1 |
The invention concerns a device for injecting fuel into a diesel engine using a pulsating flow pump for improving the fuel performance of said engines by controlling the beginning and the end of the injection. It comprises a device (20) ...
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WO/1999/002849A1 |
Disclosed is an injector comprising a HP source (8) from which fuel is fed into injection valves (14) controlled by a piezoelectric or magnetostrictive pulse (59) valve (40). Said pulse enables a three-way valve to be developed, the clos...
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WO/1998/058163A1 |
A selective catalyst reduction system (10) injecting HC into an exhaust stream (16) of an internal combustion engine (312). The system (10) includes a fuel injector (14) in the engine (12) that injects a primary amount of HC into the eng...
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WO/1998/055749A1 |
A method for controlling a compression-ignition internal combustion engine (12) which provides delivery of multiple fuel injection pulses per cylinder firing with precision of pulse quantities, separation, and timing adequate for transit...
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WO/1998/054444A1 |
The invention relates to a method for improving the thorough mixing of the exhaust gas/fuel mixture in an internal combustion engine (1), whereby the exhaust gas stream is at least temporarily impinged upon by an increased exhaust-gas ma...
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WO/1998/049442A1 |
The invention relates to a fuel injection system having a fuel injection pump, the high-pressure delivery of which is determined by an electrically operated valve (24) which controls a discharge channel (21). The high-pressure delivery p...
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WO/1998/041753A1 |
Four-stroke diesel engine with unit injectors (6) and a catalytic converter (24) in the engine exhaust system (23) for catalytic reduction of nitrogen oxides in the exhaust. The unit injectors have pump pistons, each driven by an individ...
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WO/1998/035158A1 |
A hydraulically actuated electronically controlled fuel injection system comprises a pressure intensifier (6, 7) associated with a hydraulically controlled differential valve (4) having a poppet valve (27) opening into a working chamber ...
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WO/1998/023858A1 |
Disclosed is a fuel injection system, comprising an injection pump which is fed under high pressure by an electrically operated valve working in a discharge channel (30), the phase being determined by the valve closing. In order to achie...
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WO/1998/009068A1 |
A fuel injection device suitable for use in diesel engines, comprising a first accumulator (3) for storing a high pressure fuel, a second accumulator (4) for storing a much lower pressure fuel than the fuel in the first accumulator (3), ...
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WO/1998/000637A1 |
An inductive load driving device and a method for driving the same device in which the rise of load current at an initial stage of driving can be executed at high speed. To this end, the device comprises a plurality of step-up circuits (...
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WO/1997/011269A1 |
Described is a device and a method for controlling an internal-combustion engine (100), the device having first means (135, 136) for metering, to the engine, fuel which is burnt in the engine. Second means (115) treat the exhaust gases. ...
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WO/1997/008452A1 |
A storage type fuel injection device which comprises a needle valve (6) for closing an injection nozzle (11) having a nozzle hole (14) formed at a leading end thereof, a balance chamber (5) formed in casing (2) so as to impart a fuel pre...
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WO/1997/005379A2 |
A process for controlling the ignition in an internal combustion engine with a device for injecting fuel into a combustion chamber of said engine, in which a control signal for the injection process and a control signal for the ignition ...
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WO/1997/005375A1 |
A fuel injector (10) with a hydraulically actuated needle check (40) includes a fuel pressurization chamber (26) positioned between a low pressure fuel supply passage (33-37) and a nozzle supply bore (29). A portion of the low pressure f...
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WO/1997/004360A1 |
A phase shift mask blank including a translucent film containing silicon, nitrogen and a transition metal selected from the group consisting of tungsten, tantalum, chromium and titanium on a transparent substrate, wherein the proportion ...
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WO/1996/041945A1 |
A fuel injection rate shaping control system is provided which effectively controls the flow rate of fuel injected into the combustion chamber of an engine to improve combustion and reduce emissions by controlling the rate of pressure in...
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WO/1996/037697A1 |
The injection valve for fuel injection systems has a needle nozzle (2) fitted in a valve body (1), a fuel feed (12) and a control device. The injection rate is to be precisely adjustable. This is attained in that there is a pressure cham...
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WO/1996/035867A1 |
An engine fuel system including a solenoid actuated fuel control valve (16) which is energised to cause fuel delivery to the associated engine. The valve is initially closed to achieve pilot delivery of fuel by a high current pulse suppl...
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WO/1996/035870A1 |
A hydraulically-actuated electronically-controlled fuel injection system (10) includes a solenoid operated main valve (500, 500a) that controls the flow of actuating fluid to the individual injectors (18). The flow of pressurized actuati...
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WO/1996/034195A1 |
A fuel injection device works based on the principle of storage of energy in a solid body and is designed as a reciprocating piston pump with a delivery piston (35, 24) that is moved from its initial position towards a compression chambe...
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WO/1996/032585A1 |
A multipiece fuel pump plunger assembly for controlling the fuel injection rate and delivery during the initial injection portion of a fuel injection cycle for an internal combustion engine. The injector (2) includes a two piece plunger ...
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WO/1996/025596A1 |
A fuel injection device for internal combustion engines with a high-pressure fuel pump (1) which conveys fuel from a low-pressure chamber (3) through a feed pipe (5) into a high-pressure collecting chamber (common rail) (7) which is conn...
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WO/1996/010129A1 |
The invention concerns an injection valve comprising a high-pressure feed (32), a low-pressure return (35), a valve needle (16), an injection needle (5) and a spring arrangement which pretensions the injection needle (5) in the direction...
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WO/1996/003853A2 |
An improved hydraulically-actuated fluid injector system (10) comprises a hydraulically-actuated fuel pressurization member (74), a fluid storage chamber (94), and a direct-operated check (76). Pressurization of fluid in the storage cham...
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WO/1996/003578A1 |
An injection method presenting, in addition to the main injection phase, an auxiliary pre-injection phase during the induction stroke of the engine. The pre-injection phase is preferably performed at the start of the induction stroke, an...
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WO/1996/003571A1 |
An automatic regeneration initiating method presenting, in addition to the main injection phase, an auxiliary post-injection phase for injecting a given quantity of fuel directly into the cylinders during the expansion stroke when the te...
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WO/1996/003572A1 |
An injection method applicable to engines featuring a Denox catalyst for reducing the nitric oxide content of exhaust gas. In addition to the main injection phase, the method presents a post-injection phase predominantly performed during...
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WO/1995/026468A1 |
Described is a fuel-injection system designed for pre-injection and main injection of fuel through injection nozzles into the combustion chambers of an internal-combustion engine. The system is fitted with a pre-injection piston (10) whi...
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WO/1995/025888A1 |
A fuel injection device for a common rail system has an injection valve controlled by a driving mechanism (18, 34) through a double seat valve (14). The seat valve is designed together with the valve seats (36, 37) and the driving mechan...
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WO/1995/025886A1 |
The valve needle (6) of an injection valve is controlled by a driving mechanism (34) that controls a control valve (14) by releasing the pressure in a chamber (11) located behind the valve needle (6). This chamber (11) communicates in a ...
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WO/1995/015435A1 |
A fuel pre-injection and main injection nozzle has a nozzle holder (10) in which are coaxially arranged two closure springs (11, 12). One closure spring continuously acts through a central stud (28) on a valve needle (16) and the other c...
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