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| Number | Title | Issue Date |
| 5906189 | Evaporative fuel controller for internal combustion engine An evaporative fuel controller for an internal combustion engine to prevent blow-off of fuel and/or outflow of emissions immediately after fuel is fed into a fuel tank, and to prevent a large quantity of evaporative fuel from flowing into a canister durin... | 05/25/1999 |
| 5899191 | Air fuel ratio control An engine management system comprising engine control unit (17) which receives throttle position signals from at least two throttle position sensors (15); compares the signals; selects a preferred signal in response to a discrepancy between the signals; a... | 05/04/1999 |
| 5890474 | Method and arrangement for checking the operability of a tank-venting system The invention is directed to a method and arrangement for checking the operability of a vessel. Pressure is introduced into the vessel utilizing a pressure source having operating variables which vary during operation of the pressure source. These operati... | 04/06/1999 |
| 5878718 | Fuel supply and method for operating an internal combustion engine A fuel supply systems with two series-connected pumps and with fuel injection valves that inject fuel directly into a combustion chamber of an engine in which a starting process takes less time because of the small feed quantity of the second fuel pump. T... | 03/09/1999 |
| 5878710 | Fuel injection shutdown system A fuel injection shutdown system for a fuel injected internal combustion engine having mechanical fuel injectors with a return spring and lifter bodies slidably disposed in lifter guides comprises a slot formed in the lifter guides to receive a hydraulic ... | 03/09/1999 |
| 5873343 | Diesel engine emergency shutoff device and method An improvement for diesel engine emergency shutoff devices and method for intake air-flow shutoff valves. The device includes tubing connecting the engine's exhaust manifold with the intake manifold at a location down stream from the shutoff valve with a ... | 02/23/1999 |
| 5873340 | Spark plug for venting excessive pressure An internal combustion engine spark plug provides an overpressure release mechanism to avert engine component damage as a result of hydrostatic lock caused by liquids (typically water) entering the combustion chamber under operating conditions. This spark... | 02/23/1999 |
| 5873335 | Engine valve actuation control system There is shown an electric motor control of the engine valves of an internal combustion engine. A brushless torque actuator controls the rotation of a cam member which provides the appropriate lift to the engine valve to move the valve from the closed to ... | 02/23/1999 |
| 5868111 | Fuel injection control system for a multi-cylinder internal combustion engine In a fuel injection control system for a multi-cylinder internal combustion engine including a high pressure fuel pump for supplying fuel under pressure to the fuel injection valves of the various cylinders through a distribution line including a fuel dis... | 02/09/1999 |
| 5850818 | Fuel supply apparatus having abnormality detecting function Electric current to a fuel pump in an engine fuel supply system is controlled so that a deviation in the number of pump rotations between a predetermined reference number of rotations of the fuel pump and an actual number of rotations thereof is within a ... | 12/22/1998 |
| 5832904 | Fuel-feed system for an engine In a high-pressure fuel pump, a bellows chamber communicates with a fuel tank. A volume chamber having a predetermined volume is arranged in a return passage which returns a fuel stayed in the bellows chamber to the fuel tank. The fuel which has stayed in... | 11/10/1998 |
| 5829397 | System and method for controlling the amount of lost motion between an engine valve and a valve actuation means An internal combustion engine lost motion valve actuation system is disclosed. The system includes a variable length connection means connecting a force imparting means and an engine valve. The connection means may assume plural lengths to provide plural ... | 11/03/1998 |
| 5826554 | Pressure relief means for a thin wall, air intake pipe for an internal combustion engine A valve is installed in an opening provided in a thin wall of an air intake pipe, which supplies combustion air from a flow control device to a cylinder of an internal combustion engine, to relieve excess pressure in the pipe. The valve includes a socket ... | 10/27/1998 |
| 5819698 | Engine condition monitoring system An engine condition monitoring system includes a sensor for producing a sensor signal representing the oxygen content of the exhaust gas of a small internal combustion engine in a floor buffer fueled by propane or other form of natural gas. A micro-proces... | 10/13/1998 |
| 5813427 | Counter-current check device for a canister in an automobile A device for preventing a fluid from flowing in a canister used in an automobile comprising a casing of a hollow cylindrical shape having an inlet and an outlet, the outlet being connected to a vent pipe of the canister and the inlet being connected to th... | 09/29/1998 |
| 5806500 | Fuel vapor recovery system A fuel vapor recovery system for an automotive vehicle includes a fuel tank, a first vapor recovery canister, a second vapor recovery canister, and a bypass flow metering element. The first canister has an inlet communicating directly with the fuel tank a... | 09/15/1998 |
| 5799639 | Evaporative fuel-processing system for internal combustion engines An evaporative fuel-processing system for an internal combustion engine includes a canister for adsorbing evaporative fuel generated in the fuel tank, a charging passage, a pressure-regulating valve for regulating pressure within the fuel tank to a predet... | 09/01/1998 |
| 5785033 | Air/fuel ratio control apparatus Fuel vapor is produced in a fuel tank and absorbed in a canister. The absorbed fuel vapor is purged through a purge passage into an engine induction passage under predetermined engine operating conditions. The air/fuel ratio is learned for air/fuel ratio ... | 07/28/1998 |
| 5782218 | Evaporated fuel treatment device of an engine An evaporated fuel treatment device comprising a purge control valve for controlling an amount of fuel vapor fed into the intake passage from a charcoal canister. When the engine stalls, it is judged if it was because of the purge action of the fuel vapor... | 07/21/1998 |
| 5775307 | Evaporative fuel-processing system for internal combustion engines An evaporative fuel-processing system for an internal combustion engine includes a canister, a charging passage extending between the canister and the fuel tank, a purging passage extending between the canister and the intake system of the engine, an open... | 07/07/1998 |
| 5775291 | Diesel engine controller A diesel engine controller for a car is disclosed including preheating determine means for determining according to data detected during starting whether a preheating device is driven; fuel injection time determining means for deciding a fuel injection ti... | 07/07/1998 |
| 5771855 | Damage detecting apparatus for ceramic parts The damage detecting apparatus for ceramic parts detects breakage of the ceramic combustion chamber structure and valves or breakage and wear of the cylinder liner and minimizes the damages to the structure and valves. The breakage of the head liner formi... | 06/30/1998 |
| 5769055 | Engine overheat control system An overheat protecting system and method for an internal combustion engine wherein a preventive action is initiated if the engine temperature exceeds normal temperature but is still below the danger level. The engine is protected by providing additional c... | 06/23/1998 |
| 5765540 | Method of diagnosing an evaporative system This invention performs a diagnosis on the evaporative system in a short period of time by pulling down the evaporative system with a negative pressure of the intake manifold of the engine and by checking a change in the internal pressure of the evaporati... | 06/16/1998 |
| 5765539 | Evaporative fuel-processing system for internal combustion engines An evaporative fuel-processing system for an internal combustion engine includes a canister, a charging passage extending between the canister and a fuel tank, a purging passage extending between the canister and the intake system of the engine, an open-t... | 06/16/1998 |
| 5758628 | Abnormality detection apparatus An abnormality detecting apparatus for a purge control system is capable of making an abnormality determination in a reliable and safe manner without a feeling of wrongness. A purge amount of a fuel gas is controlled in accordance with an intake pressure ... | 06/02/1998 |
| 5754971 | Fault diagnosis apparatus for a fuel evaporative emission suppressing apparatus A fault diagnosis apparatus for a fuel evaporative emission suppressing system has an electronic control unit which inputs an average value of integral terms for air-fuel ratio feedback control, engine speed, etc. when diagnosis executing conditions are s... | 05/19/1998 |
| 5752490 | Returnless fuel injection system An improved fuel injection system for use with an internal combustion eng mounted in a vehicle. The fuel system has fuel, a fuel pump, a throttle position sensor for sensing the power requested, and an engine control unit. The improvement comprises a fue... | 05/19/1998 |
| 5749349 | Fuel vapor control system An electrically controlled vacuum operated valve controls flow of fuel vapors from a collector canister to the engine intake manifold. A pressure regulator controls fuel vapor flow from the canister to the inlet of the electric valve and is normally close... | 05/12/1998 |
| 5738063 | Method for operating a fuel injection system A method for operating a fuel injection system and a fuel injection system for performing the method, in which the fuel is supplied in measurable amounts at high pressure to a high-pressure fuel reservoir, whose pressure is controlled by a pressure contro... | 04/14/1998 |
| 5735252 | Method for pneumatically checking the operability of a tank-venting system The invention is directed to a method for pneumatically checking the operability of a tank-venting system having a tank made of a material such as plastic. The tank-venting system includes an adsorption filter having a venting line with a closeable shutof... | 04/07/1998 |
| 5727515 | Process and device for controlling an internal combustion engine A method and a device for controlling an internal combustion engine having a high-pressure injection, and in particular, for controlling an internal combustion engine having a common rail system. The fuel is delivered by at least one pump from a low-press... | 03/17/1998 |
| 5727530 | Evaporative fuel-processing system for internal combustion engines for vehicles An evaporative fuel-processing system for an internal combustion engine for use in a vehicle. A passage extends between the fuel tank and the intake passage of the engine, for guiding evaporative fuel generated in the fuel tank, for processing, and across... | 03/17/1998 |
| 5718052 | Hand lever device A hand lever device is disclosed which is adapted so that a throttle valve as a driven member can be adjusted appropriately in its degree of opening via a cable and kept at a desired degree of opening and yet immediately returned to the minimum degree of ... | 02/17/1998 |
| 5718210 | Testing apparatus for fuel vapor treating device A fuel vapor treating device that collects fuel vapor produced in a fuel tank and treats the vapor without releasing it into the atmosphere. The treating device is provided with a canister that collects the fuel vapor through a vapor line. A vapor control... | 02/17/1998 |
| 5715786 | Device for detecting leakage in a fuel supply A device for detecting leakage in a fuel supply system of an internal combustion engine in which fuel is pumped from a fuel container under pressure by at least one pump and reaches injection valves over corresponding lines, the device has a control unit,... | 02/10/1998 |
| 5715799 | Method of leak detection during low engine vacuum for an evaporative emission control system A method of leak detection for an evaporative emission control system during periods of low engine vacuum includes the steps of pulsing a leak detection pump at a predetermined rate and determining whether engine vacuum level is low. The method also inclu... | 02/10/1998 |
| 5715800 | Load adjustment device for an internal combustion engine, in particular, of a motor vehicle A load adjustment device, intended for an internal combustion engine of a motor vehicle, has a desired-value transmitter actuatable by means of an accelerator pedal. The accelerator pedal has a safety contact which opens when the idle position of the acce... | 02/10/1998 |
| 5711339 | Fuel outflow preventing valve device A fuel outflow preventing valve device of the invention is formed of a housing, a plurality of valves, and a plurality of energizing members. The housing has a flow path, a plurality of orifices communicating with the flow path, a plurality of cavities, a... | 01/27/1998 |
| 5711273 | Method for controlling the operation of a driver circuit in response to an electrical fault condition In one aspect of the present invention, a method for detecting an electrical fault condition of a driver circuit is disclosed. The driver circuit is used to energize an electrohydraulic device that regulates fluid pressure. The method detects the fault co... | 01/27/1998 |
