| Patents for F02M 25 - Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel, or fuel-air mixture (28,324) |
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| 06/09/1994 | DE4240239A1 Turbo-charged combustion engine with bypass valve serving intake air-cooler - allows cooling of recirculated combustion prods. or of fresh air for combustion purposes according to engine load. |
| 06/07/1994 | US5318069 Tank venting and vapor recovery system |
| 06/07/1994 | US5317909 Abnormality detecting apparatus for use in fuel transpiration prevention systems |
| 06/01/1994 | EP0599729A1 Method for controlling the exhaust gas recirculation in an internal combustion engine |
| 06/01/1994 | DE4239773A1 Control of exhaust feed back in car EGR system - using valve for feed back controlled with inputs from intake air flow and throttle angle |
| 05/31/1994 | US5315980 Malfunction detection apparatus for detecting malfunction in evaporative fuel purge system |
| 05/26/1994 | WO1994011101A1 Apparatus and method for reducing pollutants in effluent gas flow |
| 05/26/1994 | DE4239382A1 Verfahren und Vorrichtung zur Vermeidung von Falschmeldungen bei der Diagnose eines Tankentlüftungsventils bei einer Brennkraftmaschine Method and device for prevention of false positives in the diagnosis of a tank ventilation valve in an internal combustion engine |
| 05/24/1994 | US5313925 Apparatus for detecting malfunction in fuel evaporative prurge system |
| 05/19/1994 | DE4319294C1 Denitrification of engine exhaust gas without adding reducing agent - by adsorption in adsorber in exhaust pipe, periodic desorption with hot gas and recirculation to combustion in suction air supply |
| 05/18/1994 | CN2165236Y Electronic burning accelerating device for ic engine |
| 05/17/1994 | US5312566 Air intake system device |
| 05/17/1994 | CA1329521C Process for the reduction of the fuel consumption of a hydrocarbon combustion thermal machine and of gas emissions of such machine, and means for the implementation of such process |
| 05/11/1994 | WO1994010491A1 Plastic fluid duct |
| 05/11/1994 | WO1994010427A1 Vapor-air steam engine |
| 05/11/1994 | EP0596855A1 Internal combustion engine with exhaust gas turbocharger |
| 05/11/1994 | CA2126246A1 Plastic fluid duet, in particular for convecting a vehicle fuel tank to the vehicle engine |
| 05/10/1994 | US5309887 Method of detecting abnormality in exhaust gas recirculation control system of internal combustion engine and apparatus for carrying out the same |
| 05/10/1994 | US5309886 Supercharged internal combustion engine |
| 05/10/1994 | US5309885 Marine propulsion device including a fuel injected, four-cycle internal combustion engine |
| 05/10/1994 | CA2017949C Multi-fuel engine control with canister purge |
| 05/04/1994 | EP0595584A2 Idle speed and fuel vapor recovery control system for internal combustion engine |
| 05/04/1994 | EP0595473A2 Pre-combustion chamber gas engine |
| 05/04/1994 | CN2163876Y Energy saver for internal combustion engine |
| 05/03/1994 | US5307784 Induction system for internal combustion engine |
| 05/03/1994 | US5307627 Method and apparatus for oxidizing hydrocarbons from exhaust gases |
| 04/27/1994 | EP0594463A1 Spark ignited internal combustion engines |
| 04/27/1994 | EP0594462A1 Spark ignited internal combustion engines |
| 04/27/1994 | EP0593904A1 Improvement in exhaust gas conversion system using zeolite positioned close to exhaust gas source |
| 04/27/1994 | EP0593793A1 Stimulators for fuel combustion |
| 04/27/1994 | CN1085988A Improvements relating to internal combustion engines |
| 04/26/1994 | US5305724 Evaporative fuel control unit for internal combustion engine |
| 04/26/1994 | US5305720 Internal combustion engine |
| 04/26/1994 | US5305715 Supplement fuel generator for vehicle engines |
| 04/21/1994 | DE4235075A1 Suction manifold for multicylinder IC engine - has by-pass line, branching downstream of burner into individual lines, one opening into engine inlet duct |
| 04/21/1994 | CA2100935A1 Exhaust gas conversion system using zeolite positioned close to exhaust gas source |
| 04/19/1994 | US5304235 Canister |
| 04/19/1994 | US5303686 Method of purifying exhaust gases of an Otto-cycle engine |
| 04/14/1994 | WO1994008145A2 Emission control metering valve |
| 04/14/1994 | DE4333424A1 Diesel engine combustion regulator with engine operating condition detectors - has first units for relative redn. of combustion temp. corresp. to detected engine operating conditions and second units for lengthening time of ignition retardation |
| 04/13/1994 | EP0591744A1 Control system for internal combustion engines |
| 04/13/1994 | EP0591180A1 Particulate filter trap for a diesel engine |
| 04/13/1994 | CN1085306A Emission control device |
| 04/07/1994 | DE4241603C1 Einrichtung zum Herstellen eines Gemisches von flüssigem Brennstoff und Zusatzflüssigkeit Means for producing a mixture of liquid fuel and additional fluid |
| 04/06/1994 | EP0590814A2 A particulate and exhaust gas emission control system |
| 04/05/1994 | US5300266 Electrical apparatus and method for generating antibiotic |
| 04/05/1994 | US5299746 Apparatus and method for direct solid-fortification of fuels with ferrocene |
| 04/05/1994 | US5299548 Carburetor with lagging bypass air valve |
| 04/05/1994 | US5299546 Air-fuel ratio control apparatus of internal combustion engine |
| 04/05/1994 | US5299545 Evaporative fuel-processing system for internal combustion engines |
| 04/05/1994 | US5299544 Evaporative fuel-purging control system for internal combustion engines |
| 04/05/1994 | US5299536 Apparatus and method for decreasing nitrogen oxide emissions from internal combustion power sources |
| 03/31/1994 | WO1994007020A1 Fuel injection nozzle with additive injection for diesel engines |
| 03/31/1994 | DE4311316C1 Device for storage and feed of volatile fuel components into IC engine - has return valve with flow intake and two flow outlets, each with own seal body with one-directional flow |
| 03/31/1994 | DE4311314C1 Device for storage and feed of volatile fuel components into IC engine - has return valve with flow intake and outlets, with one elastomeric seal actuated by differential pressure |
| 03/30/1994 | EP0589176A2 Method for testing the tightness of a tank installation for vehicle |
| 03/29/1994 | US5297578 For a fuel supply system |
| 03/29/1994 | US5297529 Positive pressure canister purge system integrity confirmation |
| 03/29/1994 | US5297528 Evaporation fuel control apparatus for engine |
| 03/29/1994 | US5297527 Diagnosing apparatus of evaporation fuel control system of vehicle |
| 03/24/1994 | DE4326498A1 Diagnosis and control of system functions, e.g. for vehicles - involves defining correction measure sequences according to detected subsystem faults |
| 03/24/1994 | DE4231681A1 IC engine combustion chamber air conditioning - involves heat exchange of fresh air, or air-fuel mixt. prior to or during moisturising and combustion chamber supply |
| 03/23/1994 | EP0588706A1 Exhaust gas recirculation valve control assembly for an internal combustion engine |
| 03/22/1994 | US5297047 Diagnostic arrangement for use with automotive engine systems |
| 03/22/1994 | US5295472 Apparatus for detecting malfunction in evaporated fuel purge system used in internal combustion engine |
| 03/17/1994 | WO1994005905A1 Delivery system and method for combustion enhancing material |
| 03/17/1994 | WO1994005417A1 An improved method to reduce fuel vapor emissions |
| 03/17/1994 | WO1993024751A3 Misfire detection in an internal combustion engine using exhaust pressure |
| 03/17/1994 | DE4230641A1 Kraftstoff-Einspritzdüse mit Additiveinspritzung für Dieselmotoren Fuel injector with additive injection for diesel engines |
| 03/16/1994 | EP0586891A1 Injection device for an internal combustion engine |
| 03/15/1994 | US5294056 Fuel-gas mixture injector with a downstream mixing conduit |
| 03/15/1994 | US5293853 System for controlling an internal combustion engine |
| 03/15/1994 | US5293741 Warming-up system for warming up an engine for an automotive vehicle |
| 03/09/1994 | EP0586123A2 Air intake arrangement for internal combustion engine |
| 03/09/1994 | EP0585975A1 Process for producing fuel absorbent |
| 03/09/1994 | EP0585527A1 Device for temporary feeding of evaporated fuel from the free space of a tank in the intake manifold of an internal combustion engine |
| 03/09/1994 | EP0585526A1 Electromagnetically operated valve |
| 03/03/1994 | WO1994004815A1 Air-aspiration system for an internal-combustion engine |
| 03/03/1994 | WO1994004636A1 Unleaded mmt fuel composition |
| 03/03/1994 | DE4316728A1 Controlled feeding and recycling set=up for fuel fraction from vehicle tank - collects vented components in storage unit for re-emission into inlet manifold when richer mixture is required |
| 03/03/1994 | DE4228850A1 Exhaust gas recirculation valve - has return spring located in exhaust gas channel and coaxially to valve shaft, one end supporting itself and other end is supported on valve plate |
| 03/03/1994 | CA2142991A1 Unleaded mmt fuel composition |
| 03/02/1994 | EP0585105A1 Internal combustion engines with exhaust gas recirculation |
| 03/01/1994 | US5289837 Engine cleaning system |
| 03/01/1994 | US5289811 For use in an evaporative control system |
| 02/24/1994 | DE4328090A1 Fuel vapour take=off system of motor vehicle IC engine - designed for introduction of fuel vapour which is vaporised from fuel contained in engine fuel tank in to engine inlet duct across discharge valve. |
| 02/24/1994 | DE4227739A1 Mixer valve for exhaust gases of IC engines - has valve closing member intensively cooled by a heat discharge rib offering relatively slight flow resistance. |
| 02/22/1994 | US5288307 Method to reduce fuel vapor emissions |
| 02/22/1994 | US5287836 Control system for internal combustion engines |
| 02/17/1994 | WO1994003719A1 Activated carbon filter for motor vehicles |
| 02/17/1994 | WO1994003717A1 Dilution controlled lean burn system |
| 02/17/1994 | DE4301655C1 Combustion engine exhaust-return valve - has housing formed in return pipe end and pipe contracted to form seat adjacent to lateral outlet |
| 02/17/1994 | CA2142199A1 Dilution controlled lean burn system |
| 02/15/1994 | US5287281 Computer controlled flow of nitrous oxide injected into an internal combustion engine |
| 02/10/1994 | DE4326351A1 Fault diagnosis of IC engine exhaust gas recirculation system - detecting pressure change when control valve is operated, and checking whether cooling water temp., air intake temp. or engine oil temp. are above reference for correct operation of sensor |
| 02/09/1994 | EP0582297A1 Electromagnetic valve for controlling fuel vapour flow in a fuel supply device |
| 02/08/1994 | US5284121 Internal combustion engine with evaporated fuel purge system |
| 02/08/1994 | US5284050 Self-diagnosis apparatus in system for prevention of scattering of fuel evaporation gas |
| 02/03/1994 | DE4325004A1 Method of periodically attaining the ignition temp. of soot in the exhaust of an IC engine - requires soot filter with heater and flap in front to control back pressure, depending on temp. |
| 02/01/1994 | US5282445 Including cerium oxide; engines used in locomotives, ships and stationary engines of power plants |