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Document |
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6050245 |
Canister vent valve having at least one sensor and single electric actuator operatively connected to a single electrical connector
A vapor collection canister vent valve contains both an electric pressure sensor for measuring evaporative emission space pressure during a diagnostic test and an electric actuator for operating...
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6047682 |
Accumulating type fuel injection control
In an accumulator type fuel injection control device, a feed hole (28) provides communication between a common rail (24) for storing fuel from a fuel pressure pump (29) and a fuel injection valve...
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6029628 |
Electric-operated fuel injection having de-coupled supply and drain passages to and from an intensifier piston
A fuel injector for an internal combustion engine. The injector body contains a variable volume control chamber to and from which control fluid is supplied and drained to operate an intensifier...
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6029634 |
Fuel metering system
A new fuel metering system for selectively controlling the rack pressure and the volume of fuel available to a diesel engine. The inventive device includes a fuel inlet line in fluid communication...
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6016790 |
High-pressure pump for use in fuel injection system for diesel engine
A high-pressure pump for use in a fuel injection system for diesel engines is provided which includes a plunger slidably disposed within a chamber formed in a pump housing to define a pressure...
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6000379 |
Electronic fuel injection quiet operation
A method of controlling hydraulically actuated electrically controlled unit fuel injectors to operate quietly and with less seat wear on a valve disposed therein is disclosed. The disclosed method...
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5996557 |
Fuel injection timing control system of fuel-injection pump for diesel engines
A fuel injection timing control system for a diesel fuel injection pump with a duty-cycle controlled electromagnetic solenoid valve associated with an injection-timing-control timer piston to...
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5988143 |
Process for determining the opening time of an injection valve of a common-rail injection system
In a process for determining the opening time of an injection valve of a common-rail injection system, an injection duration is derived from a characteristic diagram based on the fuel quantity to...
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5979408 |
Fuel injection system
A fuel injection system (10) for a multiple-cylinder engine includes a single solenoid-operated fuel metering valve (12) connected through fuel lines (50) to a plurality of fuel injection nozzles...
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5975053 |
Electronic fuel injection quiet operation
A method of controlling hydraulically actuated electrically controlled unit fuel injectors to operate quietly and with less seat wear on a valve disposed therein is disclosed. The disclosed method...
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5970958 |
Fuel vapor purge control
A variable area valve and pressure regulator for providing fuel vapor purge control in an evaporative emission control system of an automotive vehicle. A solenoid valve assembly selectively...
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5967121 |
Unit and snap-action device therefor
A simplified, economical, noise-abating mode of securing a unit embodied for instance as a valve. For securing the unit, the unit has a housing with a first portion having a first encompassing...
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5967119 |
Electronically variable pressure control
The invention relates to a fuel pressure control system for an electromechanical fuel injection system. The fuel injection system includes a fuel rail for receiving pressurized fuel from a fuel...
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5957111 |
Method of regulating supply pressure in a hydraulically-actuated system
A method of regulating pressure in a hydraulically-actuated fuel injection system is described. The hydraulically-actuated fuel injection system includes a high pressure pump coupled to an engine...
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5954030 |
Valve controller systems and methods and fuel injection systems utilizing the same
The present invention is a fuel injection system having one or more fuel injectors and an electronic control system therefore. The preferred fuel injector has a double magnetic latching solenoid...
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5941215 |
Fuel injection system for a multicylinder internal combustion engine
In a fuel injection system for a multi-cylinder internal combustion engine with magnetic valve controlled direct injection fuel injectors of which each includes a housing having an injection nozzle...
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5937826 |
Apparatus for controlling a fuel system of an internal combustion engine
A fuel system includes an electronically controllable high pressure fuel pump operable to supply high pressure fuel from a lower pressure fuel source to a high pressure fuel collection chamber...
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5931144 |
Compensator for manifold fuel injectors
A compensator is described for use on those manifold fuel injectors for gasoline engines which utilize a gas pressure cycler to vary the instantaneous rate of liquid fuel injection in proportion to...
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5924407 |
Commanded, rail-pressure-based, variable injector boost current duration
An electric control for a fuel injector develops a commanded boost signal that is superimposed on a fuel injection pulse waveform. Variable operating parameters, such as engine speed, fuel...
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5893354 |
Method of controlling fuel vapor canister purge flow and vapor management valve therefor
A fuel vapor management valve or VMV having an electrically operated vent valve for controlling atmospheric bleed flow to a vacuum signal pressure chamber. The pressure in the signal pressure...
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5884606 |
System for generating high fuel pressure for a fuel injection system used in internal combustion engines
The invention relates to a system for generating high fuel pressure for a fuel injection system used in internal combustion engines in which via a low-pressure pump fuel aspirated from a fuel tank...
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5878723 |
system for controlling fuel, metering into an internal combustion engine
A system for controlling fuel metering into an internal combustion engine, in particular a self-igniting internal combustion engine, is described. An electromagnetic valve influences the beginning...
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5873350 |
Method for adapting the delay time of an electromagnetic tank-venting valve
The invention is directed to a method for periodically clock driving a through-flow control valve between a first position wherein the valve is closed and a second position wherein the control...
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5853018 |
Dampening resonance in a flow regulator
A diaphragm type flow regulator has an electrically operated bleed valve to control fluid signal pressure in a chamber on one side of the diaphragm. A valve member mounted on the opposite side of...
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5845622 |
Fluid metering device
A fluid metering device, for instance for a fuel supply system of a combustion engine having combustion chambers, which fluid metering device comprises at least one supply line connection (1) and...
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5810328 |
Electrically controlled valve
An electrically controlled valve which is used for controlling the opening area of a connection between a high pressure chamber and a low pressure chamber. The valve is embodied as a solenoid valve...
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5803056 |
Canister vent valve having electric pressure sensor and valve actuator
A vapor collection canister vent valve contains both an electric pressure sensor for measuring evaporative emission space pressure during a diagnostic test and an electric actuator for operating...
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5791318 |
Valve for the metered introduction of fuel vapor evaporated from a fuel tank of an internal combustion engine
A valve is provided for a metered introduction of fuel vapor evaporated from a fuel tank of an internal combustion engine into an intake tube of the engine. A valve housing which has an inflow...
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5791321 |
Fuel supplying apparatus for internal combustion engine
An fuel supplying apparatus for supplying a fuel to an internal combustion engine. The engine has a plurality of injectors for injecting fuel to the engine, a pump for supplying fuel from a fuel...
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5785025 |
Fuel supply for international combustion engine
In a fuel supply system employing a returnless fuel pipe arrangement, a relief valve is provided at a discharge side of a fuel pump. The relief valve is opened when fuel pressure in the fuel pipe...
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5758626 |
Magnetically adjustable valve adapted for a fuel injector
A solenoid actuator, adapted for use in an electronic control valve for a fuel injector, having an electrically-energizable electromagnetic device, such as a winding, a pole member associated with...
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5749344 |
Fuel supply control for internal combustion engine by intake air pressure estimation
Throttle valve opening and engine rotational speed are detected to estimate intake air pressure. Fuel consumption Q is estimated from the estimated intake air pressure. Fuel pump drive voltage is...
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5743238 |
Fuel pumping and injection systems
A device is provided for pumping fuel through an internal combustion engine, comprising a pump cylinder and a piston reciprocable within the pump cylinder to define a pump chamber open at one end...
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5727525 |
Accumulator fuel injection system
An accumulator fuel injection system for automotive vehicles is provided which includes an accumulating chamber storing therein fuel under a given pressure, a plurality of fuel injectors...
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5720262 |
Dynamic electronic control system for controlling the injection pressure of a rail injection system
An electronic system (1) for controlling the injection pressure of a fuel injection system (4) wherein a pump (8) supplies fuel at high pressure to a rail (17) presenting a number of outlets (19a,...
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5718207 |
Fuel supply apparatus and method for supplying fuel according to an engine operating condition
A fuel supply apparatus includes a flow control valve, a housing, a movable portion, a compression coil spring and a coil constructed integrally with a fuel pump (or separately from the fuel pump)....
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5711275 |
Fuel supply apparatus for an internal combustion engine
A fuel pump is driven by a variable, constant current, control circuit. A pressure control valve disposed between the fuel pump and a fuel rail includes a downstream pressure control valve and a...
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5692476 |
Fuel injection device for internal combustion engines
A fuel injection device for internal combustion engines with a high pressure fuel pump that delivers fuel from a low pressure chamber via high pressure lines to at least one injection valve that...
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5638791 |
Common-rail fuel injection system for an engine
A common-rail fuel injection system for an engine includes a fuel injector having a nozzle hole. A common rail stores high-pressure fuel. The common rail is connected to the fuel injector to feed...
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5609140 |
Fuel supply system for an internal combustion engine
In a fuel supply system for an internal combustion engine, significant parameters such as fuel pressure and fuel flow rate are determined continuously from measured variables with the aid of an...
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5605133 |
Fuel rail pressure control
A no-return fuel system with a pressure regulator controlling the pressure of fuel supplied by a pump to the fuel rail and injectors of an internal combustion engine. The regulator has a bypass...
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5586539 |
Fuel supplying apparatus for internal combustion engine
A fuel supplying apparatus controls fuel pressure according to engine operating conditions to prevent blow-through of injected fuel into the exhaust system and hyper-vaporization of fuel. When the...
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5577479 |
Fuel injection system for motor vehicles
A fuel injection system for internal combustion engines having a high-pressure fuel pump, which supplies fuel from a low pressure chamber via a supply line into at least one high-pressure...
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5524593 |
Electropneumatic control valve
An electropneumatic control valve for regeneration of a fuel absorption element by supply of air to the absorption element includes a valve comprised of a valve seat member (5) and a valve sealing...
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5485820 |
Injection control pressure strategy
A system for controlling fuel injection in a diesel engine that includes a hydraulically-actuated, electronically-controlled unit injector (HEUI) fuel system. The injection rate/pressure...
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5476079 |
Electromagnetic valve for opening or closing fluid passage
An electromagnetic valve opens and closes a fuel return passage (23, 24) of a fuel injection pump, to control a time of fuel return when fuel compressed by a plunger (12) of the fuel injection pump...
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5413082 |
Canister purge system having improved purge valve
The valve has a one-piece guide and valve seat member and a one-piece valve member that is guided by a bushing lining the guide of the guide and seat member. The valve is operated by a duty-cycle...
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5373828 |
Fuel injection system
A fuel system for a multi-cylinder compression ignition engine includes a tubular body (10) having an internal step (11) against which is located a flanged pump barrel (12), a pair of valve blocks...
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5367999 |
Method and system for improved fuel system performance of a gaseous fuel engine
An improved gaseous fuel delivery system and method (10) to improve performance of a gaseous fuel engine (30) by variably maintaining gaseous fuel pressure to the gaseous fuel engine (30). From a...
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5357929 |
Actuation fluid pump for a unit injector system
A diesel engine hydraulically-actuated, electronically-controlled unit injector fuel injection system is provided with a two-stage pump system including two parallel pumps for supplying actuating...
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