| 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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| 06/12/1991 | EP0431101A1 Ventilation device for the fuel tank of an internal-combustion engine. |
| 06/12/1991 | EP0207122B1 Gas generator of an engine |
| 06/11/1991 | US5022431 Exhaust gas recirculation valve assembly |
| 06/05/1991 | CN1051928A Aqueous fuel for internal combustion engine and method of combustion |
| 06/04/1991 | US5021071 Vehicle fuel tank pressure control method |
| 06/04/1991 | US5020505 Exhaust gas recirculation valve assembly |
| 06/04/1991 | US5020503 Air-fuel ratio control system for automotive engines |
| 05/30/1991 | WO1991007579A1 Aqueous fuel for internal combustion engine and method of combustion |
| 05/29/1991 | EP0428550A1 Stereo lambda control system. |
| 05/23/1991 | DE4042325A1 Combustion system for dual fuel engine |
| 05/22/1991 | EP0428274A1 Exhaust gas recirculation valve assembly |
| 05/22/1991 | EP0316331B1 Injection device for introducing fuels in the combustion chamber of an internal combustion engine |
| 05/16/1991 | DE4042324A1 Combustion system for dual fuel engine |
| 05/14/1991 | US5014742 Vacuum actuated tank vapor vent valve |
| 05/14/1991 | US5014674 Fuel vapor control for automotive vehicle engine |
| 05/14/1991 | US5014654 Intake manifold for internal combustion engine |
| 05/08/1991 | EP0426320A1 Re-combustion control means for alcohol engine |
| 05/08/1991 | EP0425862A1 Apparatus for the disposal of fuel gases from vehicle fuel tanks |
| 05/07/1991 | US5014203 Abnormality detecting device for an EGR system |
| 05/07/1991 | US5012838 Solenoid valve incorporating liquid surface detecting valve |
| 05/07/1991 | US5012772 Internal combustion engine |
| 05/07/1991 | CA2028498A1 Integrated induction system |
| 05/02/1991 | EP0425327A1 Electromagnetic gas injector for an internal combustion engine |
| 05/02/1991 | EP0424488A1 Method and apparatus for producing a water-in-fuel-emulsion and emulsifier-free water-in-fuel-emulsion |
| 04/30/1991 | US5010869 Air ionization system for internal combustion engines |
| 04/25/1991 | DE3935367A1 Engine brake operating system - increases working gas pressure to increase brake action |
| 04/25/1991 | DE3935209A1 Adsorption filter for fuel vapour - incorporates ventilation device at filter outlet |
| 04/23/1991 | US5009199 Intake reservoir for an engine having a check valve |
| 04/17/1991 | EP0422107A1 Remote mixing control tool with cleaning function |
| 04/16/1991 | US5008036 Reacting antimony or antimony trioxide with hydrogen peroxide |
| 04/10/1991 | EP0421481A1 Device for introducing pressurized gas in a combustion chamber of an internal combustion engine |
| 04/09/1991 | US5005552 Exhaust gas recirculation system of engine |
| 04/09/1991 | US5005550 Canister purge for turbo engine |
| 04/04/1991 | DE3932192A1 Fuel-tank for vehicle - has filler pipe with siphon section outside tank and giving laminar fuel inflow |
| 04/04/1991 | DE3932062A1 Fuel tank with emission-reducing flexible air bag - has absorption filter for vapour generated in tank and released by suction into engine air intake |
| 04/04/1991 | DE3931811A1 Cylindrical exhaust pipe section with tangential opening - incorporates grooves to prevent penetration of fluid |
| 04/03/1991 | EP0420647A1 Improvements in combustion engines |
| 03/30/1991 | WO1991005149A1 Improvements in combustion engines |
| 03/30/1991 | CA2066186A1 Combustion engines |
| 03/27/1991 | EP0418484A1 Intake manifold throttling valve driving device for a diesel engine |
| 03/26/1991 | US5002596 Fuel vapor canister |
| 03/26/1991 | US5002031 Fuel control apparatus for an internal-combustion engine |
| 03/21/1991 | WO1991003634A1 Internal combustion engine |
| 03/20/1991 | CN1050077A Alloy ball for improving engine performance and exhaust duffusion |
| 03/19/1991 | US5001645 Adaptive control system for an engine |
| 03/12/1991 | US4998969 Engine maintenance fluid introduction system |
| 03/12/1991 | US4998707 Exhaust gas recirculation valve assembly |
| 03/06/1991 | EP0415590A1 Vapour purge control system |
| 03/06/1991 | EP0415045A2 Device for removing fuel and fuel vapours |
| 03/06/1991 | EP0414669A1 Device at internal combustion engines |
| 02/26/1991 | US4995369 Regulated flow canister purge system |
| 02/21/1991 | DE3926817A1 Lubricant contg. lubricating oil and rare earth element esp. cerium - used in internal combustion engines for reducing pollutant content in exhaust gases |
| 02/19/1991 | US4993391 Tank, pump |
| 02/19/1991 | US4993225 Two cycle engine vapor emission control |
| 02/14/1991 | DE3926423A1 Four-stroke IC engine - has two inlet valves in combustion chamber, one valve opening briefly during exhaust stroke |
| 02/12/1991 | US4991547 Intake port pressure control system for engine induction system |
| 02/12/1991 | US4991395 Device for cleaning the exhaust gases of a combustion engine in use |
| 02/07/1991 | DE4032041A1 Gas mixture present in vehicle fuel tank - is stored, when filling tank, in expansion bellows inside second tank |
| 02/06/1991 | EP0412076A1 Internal combustion engine with supercharger |
| 02/06/1991 | EP0411173A1 Error-detecting arrangement and method for a fuel tank ventilation system |
| 02/05/1991 | US4989629 Fuel cut valve for vent line |
| 01/30/1991 | EP0195803B1 Supplemental fueling of compression ignition engines |
| 01/23/1991 | EP0409187A1 Process for operating a piston engine and device for admission of a pressurized fuel-water vapour mixture |
| 01/22/1991 | US4986840 Charcoal canister for use in a fuel purge system of an internal combustion engine |
| 01/22/1991 | US4986246 Valve for the metered admixture of volatilized fuel to the fuel-air mixture of an internal combustion engine |
| 01/22/1991 | US4986070 Prevention of formation of hydrogen sulfide |
| 01/16/1991 | EP0408050A1 Control method and apparatus for internal combustion engine |
| 01/10/1991 | WO1991000680A1 Methods for generating plasma and producing ozone |
| 01/10/1991 | WO1991000192A1 Ventilation device for the fuel tank of an internal-combustion engine |
| 01/08/1991 | US4982757 Fuel cutoff valve |
| 01/08/1991 | US4982715 Internal combustion engine |
| 01/01/1991 | US4981119 Method of increasing the exhaust braking power of an internal combustion engine |
| 12/27/1990 | EP0299132B1 Device for vaporizing a fuel-water emulsion for an internal-combustion engine |
| 12/20/1990 | DE4019159A1 Mehrstoffmaschinensteuerung mit behaelterablass More Fabric Machine control with behaelterablass |
| 12/20/1990 | DE3919533A1 Soot burning filter for diesel engine - incorporates fine mesh located after filter |
| 12/19/1990 | EP0268669B1 Process and system for burning a liquid or gaseous fuel in the combustion chamber of an internal combustion engine |
| 12/12/1990 | EP0401251A1 Motor vehicle. |
| 12/06/1990 | DE3918073A1 Container for liq. fuel - has tightly sealed filled pipe, and elastic hollow bodies with guaranteed expansion volume |
| 12/04/1990 | US4974572 Apparatus for and method of diagnosing exhaust gas recirculation system |
| 12/04/1990 | CA1277256C Liquid dispensers |
| 11/29/1990 | DE4003036C1 Electromagnetic valve for IC engine - incorporates auxiliary valve element operated by separate spring |
| 11/29/1990 | DE3916574A1 Full container with safety air bubble - has safety space above bubble not penetrated by air bubbles |
| 11/29/1990 | DE3910841A1 Device for the extraction of vapours from fuel tanks |
| 11/28/1990 | EP0399801A1 Improving fuel combustion efficiency |
| 11/27/1990 | WO1990014516A1 Improving fuel combustion efficiency |
| 11/27/1990 | CA1276846C Blow-by gas processing device for internal combustion engine |
| 11/22/1990 | EP0397759A1 Method for improving combustion in combustion engines. |
| 11/22/1990 | DE3916466A1 IC engine with recirculated exhaust gas - has exhaust gas pipe support inside inlet manifold by ceramic bushes |
| 11/15/1990 | WO1990013738A1 A process and device for diagnosing the control of the tank ventilation valve in connection with the control of an internal combustion engine |
| 11/14/1990 | EP0397360A1 Exhaust gas recirculation system of an engine |
| 11/14/1990 | EP0397058A2 Canister purge solenoid valve |
| 11/13/1990 | US4969446 Device at internal combustion engines |
| 11/13/1990 | US4969445 Device for exhaust gas recirculation on a multi-cylinder diesel internal combustion engine |
| 11/08/1990 | DE3935442C1 Vehicle fuel vapour trap - has regenerated active carbon filter with vertically movable container |
| 11/06/1990 | US4969104 Diagnosis arrangement for vehicle engine controller |
| 11/06/1990 | US4967717 Abnormality detecting device for an EGR system |
| 10/31/1990 | EP0394494A1 Heat insulated engine |
| 10/31/1990 | EP0394343A1 Vacuum bleed and flow restrictor fitting for fuel injected engines with vapor separator |
| 10/30/1990 | US4966103 Combustion system for dual fuel engine |
| 10/23/1990 | CA1275382C Fuel vapor storage canister |