|
Match
|
Document |
Document Title |
|
|
5682862 |
Control of purge rate of evaporated fuel purging unit for internal combustion engine
A method of purging a canister is disclosed, wherein purge ratio is variably controlled under predetermined condition when air fuel ratio closed loop or feedback control based on output of an...
|
|
|
5682863 |
Evaporated fuel recovery device for engines
The ON/OFF frequency of a purge control valve is defined by a product of an integer and a frequency of REF signal, where the integer does not have a divisor equal to any of the divisors of the...
|
|
|
5680849 |
Purging of evaporated fuel to engine intake with engine fuel correction upon detection of malfunction in purging system
An evaporated fuel gas purging system performs breakdown analysis without deterioration of drivability and exhaust emission even when the amount of purged fuel gas is large. During introduction of...
|
|
|
5680756 |
Fuel-vapor treatment method and apparatus for internal combustion engine
This invention is concerned with a fuel-vapor treatment method and apparatus for an internal combustion engine that do not introduce perturbations in the air/fuel ratio during purge-on or purge-off...
|
|
|
5676118 |
Fuel vapor purge control system of automobile engine
A fuel vapor purge control system of an automobile engine comprises fuel vapor concentration calculating means for calculating a concentration of fuel vapor in the purge flow based on a feedback...
|
|
|
5671718 |
Method and system for controlling a flow of vapor in an evaporative system
A method and system for determining a level of vapor generated by an evaporative system. The evaporative system is closed to atmosphere. An initial pressure in a fluid-filled tank is sensed and,...
|
|
|
5669361 |
Vehicle refueling valve
A refueling valve for a motor vehicle includes an integrated control valve therein having a vent tube that has a first valve seat on one end thereof and a second valve seat on the other end thereof...
|
|
|
5669362 |
Diagnostic device for an evaporative emission control system
In an evaporative emission control system, a canister adsorbs fuel vapor sent from a fuel tank of an engine. The canister is connected to an intake air passage through a purge gas passage and a...
|
|
|
5669360 |
Fuel-vapor emission-control system for controlling the pressure in a system
A fuel-vapor emission-control system for an internal combustion engine which is capable of achieving both a reduction of the exhaust of vapor into the atmosphere and the prevention of an excessive...
|
|
|
5666924 |
Malfunction diagnosis device for fuel-evaporated-gas processing device
When a malfunction determination mode for a fuel-evaporated-gas processing device is employed (step S1), an engine control unit 9A determines whether a malfunction of an O 2 sensor 10 is being...
|
|
|
5666925 |
Method and arrangement for diagnosing a tank-venting system
The invention is directed to a method for checking the tightness of a tank-venting system used with an internal combustion engine having an intake pipe. The tank-venting system includes a fuel tank...
|
|
|
5657962 |
Solenoid valve closure part and recycling circuit for the petrol vapours of internal combustion engines
A solenoid valve closure part comprising a seat and a solenoid coil, the valve closure part including the free end of a movable core within the hub of the coil, and further including an...
|
|
|
5651349 |
Purge system flow monitor and method
A system and method of monitoring the purge flow in an evaporative emission control purge system of a motor vehicle. Signals indicative of engine speed, fuel control and automatic idle speed...
|
|
|
5651350 |
Method of leak detection for an evaporative emission control system
A method of leak detection for an evaporative emission control system to determine if a leak is present in a portion of the system includes the steps of energizing a leak detection pump to close a...
|
|
|
5647333 |
Evaporative fuel control system for an internal combustion engine
During the stoppage of an internal combustion engine or the refueling of a fuel tank, evaporative fuel is collected in a canister, and then only the air contained in the evaporative fuel is...
|
|
|
5647335 |
Motor vehicle fuel supply system with fuel tank deventilating device
A deventilating device for motor vehicles is disclosed. The deventilating device allows, in the fuel tank and connected system parts, a limited overpressure which, on the one hand, is safe and, on...
|
|
|
5647334 |
Fuel vapor recovery system control valve
A fuel vapor recovery system has a control valve that is solenoid operated by a fuel filler pipe access door to control fluid communication between a fuel tank and a fuel vapor storage canister....
|
|
|
5638795 |
Control system for internal combustion engines
A control system for an internal combustion engine controls a fuel injection amount based on operating conditions of the engine and an evaporative fuel concentration-dependent correction...
|
|
|
5634451 |
Apparatus and method for treating fuel vapor of an engine
A fuel vapor treatment apparatus controls fuel vapor produced in a fuel tank supplied to an engine intake system to prevent dispersion into the atmosphere. It involves adjusting a purge air...
|
|
|
5635630 |
Leak detection assembly
An assembly for testing an evaporative emission control system of an automotive vehicle which controls emission of volatile fuel vapors. The assembly is used to determine if a leak is present in a...
|
|
|
5635633 |
Self-diagnosis apparatus using a pressure sensor
A self-diagnosis apparatus performs a failure diagnosis of a control unit equipped with a pressure sensor based on an output thereof a pressure sensor. The apparatus performs the failure diagnosis...
|
|
|
5632242 |
Fuel system for motor vehicles
In a fuel system for motor vehicles, comprising a fuel tank, a fuel filler pipe with an opening into the tank, a first gas conduit, one end of which is positioned within the tank and whose opening...
|
|
|
5632252 |
Apparatus for controlling fuel evaporated from internal combustion engine
An apparatus for controlling the evaporated fuel of an internal combustion engine secures the working capacities of the canisters and properly controls an air-fuel ratio when resuming the purging...
|
|
|
5630403 |
Force-balanced sonic flow emission control valve
The solenoid-operated valve's outlet port (26) is a tube having a thread (60) threaded into a threaded socket (66, 68) in a valve housing member (34). The valve seat (62) is at an end of the tube,...
|
|
|
5623911 |
Fuel vapor treating apparatus
Disclosed is a fuel vapor treating apparatus, in which fuel vapor evaporated in a fuel tank is not released directly into the atmosphere but is collected and treated. This apparatus is provided...
|
|
|
5613481 |
Control system having function of processing evaporative fuel for internal combustion engines
A control system for an internal combustion engine includes a canister for adsorbing evaporative fuel generated in the fuel tank, a purging passage extending between the canister and the intake...
|
|
|
5609142 |
Fuel-vapor treatment method and apparatus for internal combustion engine
A fuel-vapor treatment method and apparatus for an internal combustion engine, wherein when the density of fuel vapor emitted directly from a fuel tank is higher than the density of fuel vapor...
|
|
|
5609141 |
Evaporative fuel control device
An evaporative fuel control device for an engine used in an automobile is provided. The device comprises a charcoal canister for temporary adsorbing fuel vapor produced in a fuel tank, an air...
|
|
|
5606955 |
Apparatus for disposing of fuel vapor
The apparatus is arranged with a duty control valve 21 in a passage 19 for purged gas, connected between a canister 16 which temporarily traps fuel vapor and an air-intake passage 23 of an engine...
|
|
|
5606954 |
Evaporative fuel processing device
In an evaporative fuel processing device, an evaporative fuel passage communicating at one end to an upper space in a fuel tank is connected at the other end to a refueling line at a location...
|
|
|
5605177 |
Fuel reservoir apparatus
Fuel reservoir apparatus can maintain and control pressure within a fuel tank at a low level during an operation of an engine, and also can prevent excessive refuelling. The fuel reservoir...
|
|
|
5598828 |
Fuel supply control device for an engine
A fuel supply control device for an engine comprises a canister in which fuel vapor is temporarily stored and from which fuel vapor is purged into the engine. When the throttle valve is in the...
|
|
|
5596972 |
Integrated fueling control
Integrated control of internal combustion engine fueling including control of fuel injectors and control of purge valve position to vary the rate at which fuel vapor trapped in a canister is purged...
|
|
|
5592922 |
Venting apparatus for a fuel system of an internal combustion engine
In the venting apparatus (1) according to the invention, a first, small-volume adsorption filter (4) is accommodated in the front area of a motor vehicle, in the region of the internal combustion...
|
|
|
5592923 |
Diagnosis apparatus and method in an apparatus for treating fuel vapor of an engine
In an apparatus for treating fuel vapor, in which the fuel vapor in a fuel tank is once adsorbed and trapped in a canister and is then supplied to the intake system of an engine, wherein various...
|
|
|
5592387 |
Method of operating a natural gas vehicle as a function of ambient methane concentration
A method of controlling operation of a compressed natural gas vehicle as a function of a predetermined level of methane in the ambient. Vehicle ignition is turned off when a predetermined level of...
|
|
|
5590634 |
Evaporative emission control system for an internal combustion engine
The evaporative emission control system in the present invention is equipped with a fuel tank and a canister connected to the fuel tank, and a pressure sensor connected to the canister and the fuel...
|
|
|
5579742 |
Evaporative emission control system for internal combustion engines
An evaporative emission control system for an internal combustion engine comprises a canister for adsorbing evaporative fuel generated in the fuel tank, and a first evaporative fuel passage...
|
|
|
5575265 |
Diagnostic method for evaporated fuel gas purging system
In an evaporated fuel gas purging system, an accurate diagnosis can be realized by providing a reference leakage apparatus (a gauge) having a preset amount of leakage, by intentionally causing a...
|
|
|
5572981 |
Method for monitoring the functional capability of a tank venting system for a motor vehicle
A method for monitoring functional capability of a tank venting system for a motor vehicle, includes evacuation of the tank venting system through the use of negative pressure or vacuum prevailing...
|
|
|
5570674 |
Evaporative emission control system for internal combustion engines
An evaporative emission control system for an internal combustion engine has a purge control valve arranged in a purging passage connecting between a canister and an intake passage of the engine....
|
|
|
5564398 |
Simplified canister for prevention of atmospheric diffusion of fuel vapor from a vehicle
A canister for preventing diffusion of fuel vapor to atmosphere is disclosed herein. The canister includes a first case having an adsorbent material, such as activated charcoal, therein and a...
|
|
|
5562084 |
Diagnosis control valve unit for evaporation purge system
A diagnosis control valve unit, provided in a vent pipe extending from a carbon canister, includes an air cleaner casing, an air cleaner filter and a diagnosis control valve substantially contained...
|
|
|
5562757 |
Device for recovering the vapors leaving a motor vehicle gasoline tank
Fuel vapors leaving the fuel tank of a motor vehicle are recovered with a filter cartridge inserted between the tank and the intake manifold of the engine. An atmospheric connection duct of the...
|
|
|
5562083 |
Fuel vapor emission control device for engine
A fuel emission control device for an engine comprises an adsorbent for temporarily adsorbing fuel vapor therein. A canister for housing the adsorbent therein is connected to a fuel tank via a fuel...
|
|
|
5560347 |
Conductive foam vapor sensing
An apparatus for use in diagnosing an evaporative emission canister collection and purge system. An EVAP system of a vehicle is diagnosed through the use of a mechanism wherein a change in...
|
|
|
5559706 |
Apparatus for determining engine abnormality
A system, capable of determining an engine abnormality, is disclosed. The engine includes a first regulator for controlling air fuel ratio and a second regulator for controlling the purging amount...
|
|
|
5553577 |
Apparatus for checking the tightness of a tank venting system
An apparatus for checking a tank venting system for leaks that serves to vent a fuel tank of a motor vehicle whose engine has a intake tube. The apparatus has an absorption filter connected to a...
|
|
|
5549094 |
Fuel vapor control for internal combustion engine
A fuel vapor control system for an internal combustion engine is constructed so as to first determine a basic purge gas quantity based on an operating condition of the engine, then corrects the...
|
|
|
5546913 |
Evaporative fuel discharge-preventing device for engine
An evaporative fuel discharge-preventing device for an engine which comprises a surge tank for leveling out fluctuations in the amount of evaporated fuel so as to provide a stabilized engine...
|