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Class 123/359 - Fail-safe feature (e.g., cuts off fuel pump)


Subclass of Class 123 - Internal-combustion engines
Definition: Subject matter in which safety means is provided to effect
No. of patents: 88
Last issue date: 03/04/2008


1      
NumberTitleIssue Date
7338409Centrifugal clutch assembly with dedicated maneuvering mode
A vehicle power train system includes an engine, a transmission, and a centrifugal clutch assembly that selectively couples an engine output shaft to a transmission input shaft in response to an operator input. An operator selects a desired vehicle-operating mode by...
03/04/2008
7328092Method and device for monitoring brake signals in a vehicle
The invention relates to a method and device for monitoring brake signals in a vehicle with a gearbox control unit and engine control unit. An error recognition or a plausibility control of said brake signals is carried out. Brake light signals can be received by a ...
02/05/2008
7318414Constant-speed multi-pressure fuel injection system for improved dynamic range in internal combustion engine
A fuel injection system operates under a substantially constant pump speed and creates multi-pressure levels by diverting the fuel flow. Fuel pressure can be switched from one steady pressure level to another level on-demand instantly. This superimposes and overlaps...
01/15/2008
7287516Pump control system
A pump for a fuel system is disclosed. The pump has a housing defining at least one pumping chamber, and a plunger. The plunger is movable to draw a fluid into and displace the fluid from the at least one pumping chamber. The pump also has a metering valve and a con...
10/30/2007
7243636Method for operating a fuel measurement system in a motor vehicle, computer program, control device and fuel measurement system
A method for operating a fuel metering system of a motor vehicle is provided, in which fuel is delivered by at least one supply pump to at least one high pressure area, the fuel being injected by at least one fuel injector from the high pressure area directly into a...
07/17/2007
7210459Common-rail fuel injection system
A common-rail fuel injection system includes a common rail, an injector, a control device and a pressure sensor. The common rail stores the high-pressure fuel. The injector injects the fuel stored in the common rail. The control device obtains an injection quantity ...
05/01/2007
7171944High-pressure fuel pump control device for internal combustion
A high-pressure fuel pump control device for an internal combustion engine includes a feedback quantity calculating unit (602) for calculating a fuel discharge feedback quantity (QFB) of a high-pressure pump according to a proportional integral operation base...
02/06/2007
7174249Intelligent driver module for controlling operation of a fuel pump
A driver module is provided for controlling operation of a fuel pump of a vehicle. The driver module includes switching circuitry for switching transmission of electrical power to the fuel pump, and a processor for executing a series of programmable instructions for...
02/06/2007
7117048Safety controller with safety response time monitoring
A safety controller having a total worst case propagation delay, exceeding the required propagation delay required by a safety process, may be used to control the safety process by monitoring actual delays in signal processing in the safety controller and moving to ...
10/03/2006
7100574Common rail type fuel injection system
If an inlet pressure of a supply pump sensed by an inlet pressure sensor is higher than a high-pressure side threshold value and an integrated period of the state exceeds a predetermined integration period, it is determined that a high pressure abnormality occurs, a...
09/05/2006
7066143Barometric pressure diesel timing controller
A fuel injection timing control system for diesel engines operating at high altitude, including a sensor for a parameter of the engine intake air, such as engine intake air pressure or turbocharger speed. This sensor communicates with a barometric pressure timing co...
06/27/2006
7054722Device for reliable signal generation
A device for reliably generating signals in a motor vehicle, having a control arrangement which is supplied at least one control signal, the control arrangement generating a trigger signal as a function of the control signal in order to trigger at least one switchin...
05/30/2006
7051615Accelerator pedal device
The present apparatus includes an accelerator pedal 10, a pedal arm 20, a pedal shaft 30 which supports the pedal arm 20 so as to be free to swing, a return spring 40, a friction generating mechanism 50 which generates friction force corresponding to a position of t...
05/30/2006
7007676Fuel system
A fuel system for an engine has a source of pressurized fuel, a rail, and a plurality of fuel injectors. The fuel system also has a sensor to sense a parameter of the pressurized fuel, and a controller. The controller is configured to generate a flow control offset ...
03/07/2006
6971368Fuel injection system for an internal combustion engine
A fuel injection system for an internal combustion engine includes a fuel supply pump, a fuel pressure detector, and a control unit. The fuel supply pump supplies pressurized fuel to a fuel injection valve in the internal combustion engine. The fuel pressure detecto...
12/06/2005
6966307Fuel drain structure in fuel line
A fuel drain structure in a fuel line comprising a bypass channel for connecting a fuel influx side and a fuel efflux side of a regulator, and a rotary valve for opening and closing the bypass channel, contributing to a prevention of fuel remaining in the fuel line ...
11/22/2005
6915203Apparatus and method for diagnosis of vehicular system
An engine control system has a self-diagnosis function of an exhaust system. The self-diagnosis function includes a first mode for detecting a failure or abnormality of the exhaust system as a whole, and a second mode for determining and locating a specific failed c...
07/05/2005
6647957Fuel control valve for preventing sudden start of automobile
Described herein is a fuel feeding apparatus for an automobile including a fuel tank, an engine supplied with a fuel from the fuel tank by a fuel pump through a fuel feeding pipe, and a fuel return pipe for returning overflow fuel to the fuel tank. The ap...
11/18/2003
6286479Method and system for predictably assessing performance of a fuel pump in a locomotive
A method and system for determining degradation of fuel pump performance in a locomotive having an internal combustion engine is provided. The method allows for monitoring a signal indicative of a fuel value delivered by the fuel pump and for adjusting th...
09/11/2001
6044806Method and apparatus for detecting gaseous fuel leakage through a gaseous fuel admission valve within an engine
A method of detecting leakage through a gaseous fuel admission valve of a dual fuel engine including at least one such gaseous fuel admission valve and a gaseous fuel shut off valve includes determining a liquid fuel rate when the engine is operating in a...
04/04/2000
6032639Diagnosis for fuel system of internal combustion engine
A diagnostic system for a fuel system of an internal combustion engine such as direct-injection gasoline engine monitors a pressure deviation of a actual fuel pressure sensed by a fuel pressure sensor from a desired fuel pressure in a feedback fuel pressu...
03/07/2000
5893352Cylinder injection type fuel control apparatus
A cylinder injection type fuel control apparatus secures the operation of an internal-combustion engine even if a fuel supply system of the internal-combustion engine fails. The cylinder injection type fuel control apparatus is equipped with an injector (...
04/13/1999
5806498System for determining malfunctions of a fuel injection control apparatus
A system is for a diesel engine for detecting malfunctioning of an injection timing control apparatus. The apparatus controls an injection timing of fuel, pressurized by a pump, to be injected from injection nozzles. An electronic control unit (ECU) compu...
09/15/1998
5778852Functionally monitored fuel injection system
The invention relates to a fuel injection system having an electrically actuatable injection pump which comprises a pre-stroke actuator for setting the start of injection and a flow rate actuator for setting the injection quantity. A control unit for cont...
07/14/1998
5535721Fuel pump
A fuel pumping apparatus for supplying fuel to an engine incudes an angularly adjustable throttle for determining the amount of fuel supplied to the engine. The setting of the throttle in normal operation is determined by an actuator which is controlled b...
07/16/1996
5495226Secondary brake light switch
A secondary brake light switch comprising a hollow housing having a first end and a second end; an electrically conductive plunger slidably disposed within the housing; a switch coupled to the second end of the housing with switch having an input terminal...
02/27/1996
5388562Fuel injection control system for internal combustion engine
In a fuel injection system for a vehicle engine, the fuel injection is controlled in a feedback mode when no abnormality occurs in the control system, and it is controlled in an open loop mode by a limp home circuit when any abnormality in the control sys...
02/14/1995
5365904Redundant speed sensor for engine control
A control system for controlling an internal combustion engine is disclosed. The control system employs closed loop engine speed control and includes a primary and secondary engine speed sensor. An electronic control module detects a failure of the primar...
11/22/1994
5351666Method and device for controlling an internal combustion engine
In a method and device for controlling an internal combustion engine, particularly a diesel engine, when the internal combustion engine is started up, a power-regulating, controlling mechanism is triggered in a first step so as to allow it to assume a sta...
10/04/1994
5300819Automatic power regulator for induction type biogas generator
Disclosed is an automatic power regulator for controlling an induction type biogas generator via an electrically controlled governor. The biogas generator is directly coupled with a commercial AC power network. The regulator controls the power output of t...
04/05/1994
5245967Device for actuating a load adjusting element of a fuel supply device for internal combustion engines
In an electrically controlled actuation of a load adjusting element (3) corresponding to the position of an arbitrarily adjustable transmitter member (28) and corresponding to other parameters with the aid of a control device (19) and an electrically cont...
09/21/1993
5235949Method and arrangement for controlling the fuel metered in a diesel engine
The invention relates to a method and arrangement for preparing a fuel-metering signal M for a diesel engine starting with measured variables such as accelerator pedal position, rotational speed, lambda, exhaust gas temperature or torque. A fuel quantity ...
08/17/1993
5233958Arrangement for the open-loop and/or closed-loop control of an operating variable of an internal combustion engine
The invention is directed to an arrangement for the open-loop and/or closed-loop control of an operating variable of an internal combustion engine. The arrangement includes an electronic open-loop and closed-loop control unit which is influenced with an a...
08/10/1993
5224451System for controlling an internal combustion engine
A system for controlling an internal combustion engine of a motor vehicle, and, in particular, a self-ignitible internal combustion engine, that produces a speed signal, as well as a signal associated with the driver of the motor vehicle, such as a gas pe...
07/06/1993
5188081Control system for a fuel pump
A control system for a fuel pump, particularly for a solenoid-valve-controlled fuel pump in the case of a self-ignitable internal-combustion engine, in which at least one pulse transmitter is mounted on the crankshaft and/or on the camshaft. The generated...
02/23/1993
5188077Apparatus for a diesel engine
The invention relates to an apparatus for a diesel engine with a distributor injection pump with which is associated an electronically regulated fuel feed control mechanism with a rotary magnet which operates a control valve of the injection pump. In orde...
02/23/1993
5016587Brake stop light circuit arrangement for a vehicle having electronic diesel control
The invention is directed to a brake light switch circuit arrangement having an additional switch S2 which opens upon actuation of the brake pedal 13 but only after a first switch S1 closes. The signals from the two switches are proc...
05/21/1991
4989562Trouble detector system for an intake system of an automotive engine
A plurality of reference pressures for pressure in an intake passage of the engine is stored in a memory so as to be derived in accordance with speed of the engine and opening degree of a throttle valve of the engine. A reference pressure is derived from ...
02/05/1991
4989569Fuel-metering system having a redundant control arrangement
A fuel-metering system having a redundant control arrangement includes a main controller 12, an auxiliary controller 17, a first microprocessor 10, a second microprocessor 11, a switch-over unit 14, an actuator 15 and a fuel-metering unit 16. The second m...
02/05/1991
4966113Reverse rotation preventing device for diesel engine
A reverse rotation preventing device for a Diesel engine which can stop, when the engine exhibits a stopping tendency, operation of the engine to prevent reverse rotation of the engine with certainty and can automatically release a stopping interlock afte...
10/30/1990
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