| Patents for F01L 3 - Lift valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof (4,573) |
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| 03/12/1992 | DE4128544A1 Cylinder head for IC engine - has liner, valve seat ring and lift valve guide formed as composite assembly |
| 03/11/1992 | EP0474623A2 Externally ignited two stroke internal combustion engine with crankcase scavening |
| 03/11/1992 | EP0474217A2 A valve operating mechanism for an internal combustion engine |
| 03/10/1992 | US5094200 Lightweight composite engine valve |
| 03/03/1992 | US5092288 Spray rail reed block |
| 02/16/1992 | WO1992003638A1 Improved intake valve for internal combustion engine |
| 02/16/1992 | CA2067746A1 Intake valve for internal combustion engine |
| 02/06/1992 | DE4024841A1 Combustion engine with electric heater of inlet valve - is started and warmed-up with injection of fuel into preheated region for more efficient combustion |
| 01/28/1992 | US5084113 Quench hardening a valve of heat resistant martensite steel wi th a facing |
| 01/23/1992 | WO1992001143A1 Extended circumference intake poppet valve system for opening and sealing a single valve seat |
| 01/21/1992 | US5081965 Intake valve for internal combustion engine |
| 01/16/1992 | DE4128328A1 Two-flow valve for IC engine - uses combination of plate valve and ring valve |
| 01/09/1992 | DE4021087A1 Plastic valve-spring plate - has reinforcing fibres running radially to hole for valve stem |
| 12/31/1991 | US5076866 Quenched and solidified anluminum alloy with chromium, iron, t itanium and/or zirconium |
| 12/31/1991 | US5076218 Constant velocity intake manifold |
| 12/24/1991 | US5074256 Lubricating system for a valve seat of an internal combustion engine |
| 12/18/1991 | EP0462047A1 Process and apparatus for the formation of surface layers on articles and articles with a surface layer formed according to this process |
| 12/18/1991 | EP0461342A1 Diesel engine |
| 12/17/1991 | US5072950 Valve stem assembly |
| 12/11/1991 | EP0460728A1 Intake port pressure control apparatus for engine induction system |
| 12/11/1991 | CN1056903A Process for coating gas valve by laser melting and device thereof |
| 12/10/1991 | US5070834 Diesel engine with a precombustion chamber |
| 12/04/1991 | EP0459964A1 Internal combustion engine with delayed charging |
| 12/04/1991 | EP0459022A1 Valve stem seal |
| 12/03/1991 | US5069867 Process of manufacturing high-strength sintered members |
| 11/27/1991 | EP0458026A1 Valve seat ring for an internal combustion engine |
| 11/26/1991 | US5067826 Ball and roller bearings and bearing components |
| 11/12/1991 | US5064610 Heat resistant steel for use as material of engine valve |
| 11/05/1991 | US5062908 Valve guide |
| 11/05/1991 | US5062397 Valve stem seal |
| 10/29/1991 | US5060374 Method for fabricating a valve |
| 10/22/1991 | US5058541 Valve operating system of internal combustion engine |
| 10/15/1991 | US5056219 Method of manufacturing hollow engine valve |
| 10/08/1991 | US5054301 Method of forming metallic product |
| 10/08/1991 | US5054195 Process for the production of a valve |
| 09/24/1991 | US5050893 Valve stem oil shield |
| 09/17/1991 | US5048476 Two-cycle internal combustion engine |
| 09/11/1991 | EP0342191B1 Valve assembly |
| 09/10/1991 | US5046463 Assembling device for valve actuating components of internal-combustion engines |
| 09/03/1991 | US5044332 Elliptical valve stem for reducing turbulence in combustion engines |
| 08/28/1991 | CN2083633U Air valve for mechanical lapping |
| 08/22/1991 | DE4031083C1 IC engine cylinder head - incorporates valve seats cooled by heat pipes extending into coolant channels |
| 08/20/1991 | US5041168 Valve guide |
| 08/20/1991 | US5041158 Powdered metal part |
| 08/20/1991 | US5040501 Valves and valve components |
| 08/20/1991 | US5040498 Valve arrangement for cylinders of an internal combustion engine |
| 08/14/1991 | CN2082763U Ceramic valve seat with inlay type structure |
| 08/13/1991 | US5038734 Method for the operation of an IC engine and an IC engine for performing the method |
| 08/06/1991 | US5036806 Reed valves for internal combustion engines |
| 07/24/1991 | EP0438164A1 Engine valve of titanium alloy |
| 07/16/1991 | US5031878 Valve seat made of sintered iron base alloy having high wear resistance |
| 07/10/1991 | EP0435875A1 Low profile internal combustion engine |
| 07/04/1991 | DE4038378A1 IC engine valve gear assembly mechanism |
| 07/03/1991 | EP0434988A1 Assembly device for valve operating elements of internal combustion engines |
| 07/03/1991 | CN2080103U Silencer air valve of ic engine |
| 07/02/1991 | US5027754 Non-return valve of the flap type for flow concentration |
| 06/26/1991 | EP0434664A1 Stop ring groove manufacturing process |
| 06/26/1991 | EP0433561A1 A diesel engine with a precombustion chamber |
| 06/12/1991 | EP0431093A1 Poppet valve manufacture |
| 06/05/1991 | EP0429900A2 Method for manufacturing hollow valves of piston motors |
| 06/04/1991 | US5020490 Valve seat arrangement |
| 05/28/1991 | US5019338 Alloy for building JP valve |
| 05/28/1991 | US5018488 Internal combustion engine |
| 05/16/1991 | DE3937402A1 IC-engine cylinder head valve seat - is cast in cylinder head and projection extending into cylinder head away from combustion chamber |
| 05/14/1991 | US5014662 Device for controlling the jet of carburetted mixture delivered by a pneumatic injection system |
| 05/08/1991 | EP0426223A1 Non-return valve of the flap type for flow concentration |
| 04/30/1991 | US5010918 Reed valve having variable length petal |
| 04/25/1991 | DE3934883A1 IC engine with air injection device - has connected distributor tube and injection tube |
| 04/11/1991 | DE4030920A1 Combustion chamber for two=stroke engine - has elliptical cross=section with inlet and exhaust valves at opposite ends |
| 04/09/1991 | US5005538 Internal combustion engine |
| 04/03/1991 | EP0420309A1 Method of infiltrating a tubular component |
| 04/02/1991 | CA1282291C Aluminum alloy cylinder head with valve seat formed integrally by copper alloy cladding layer and underlying alloy layer |
| 03/27/1991 | EP0418943A1 Sintered materials |
| 03/26/1991 | US5002018 Umbrella seal for an automobile valve stem |
| 03/21/1991 | WO1991003629A1 Improvements in or relating to i.c. engines |
| 03/20/1991 | EP0417676A2 Ceramic composite valve for internal combustion engines and the like |
| 03/19/1991 | US5000138 Installing spark plugs in a diesel internal combustion engine |
| 03/19/1991 | US5000135 Gasoline engine with single overhead camshaft having duel exhaust cams per cylinder wherein each exhaust cam has duel lobes |
| 03/19/1991 | US4999911 Method of manufacturing an automobile valve for use in rebuilding engines |
| 03/15/1991 | CA2023985A1 Ceramic composite valve for internal combustion engines and the like |
| 03/14/1991 | DE4025994A1 Cylinder head for IC engine - has cover of highly heat-resistant material |
| 03/13/1991 | EP0416831A2 Seal member and assembly |
| 02/27/1991 | EP0414561A1 Cassette valve assembly |
| 02/24/1991 | CA2009685A1 Vented valve for internal combustion engines |
| 02/21/1991 | DE3926809A1 Damping arrangement for valves in IC engine - makes use of conical bodies to avoid need for anti-knock agents |
| 02/21/1991 | DE3926804A1 Valve drive for IC engine - makes use of spring-loaded buffer and positive connection drive |
| 02/19/1991 | US4993379 Sliding stem seal, particularly for valve stems |
| 02/19/1991 | US4993376 Restoring force reciprocating member |
| 02/14/1991 | DE3926431A1 Reciprocating valve, for IC engine cylinder head - has metal valve core assembled so that it exerts high compressive stress on ceramic valve body |
| 02/12/1991 | US4991547 Intake port pressure control system for engine induction system |
| 02/07/1991 | WO1991001437A1 Low profile internal combustion engine |
| 02/06/1991 | EP0411569A1 Heat resistant steel for use as material of engine valve |
| 02/06/1991 | EP0411282A2 Use of precipitation hardening ferritic-perlitic steels as material for valves of combustion engines |
| 02/05/1991 | US4989556 Hard particles in aluminum alloy matrix |
| 01/23/1991 | EP0408601A1 Titanium poppet valve |
| 01/16/1991 | EP0407596A1 Copper-based sintered alloy |
| 01/02/1991 | EP0405751A2 Frustoconical valve stem sealing element |
| 01/02/1991 | EP0405750A1 Floating valve stem seal |
| 01/01/1991 | US4981118 Poppet valve for internal combustion engine |
| 12/27/1990 | CA1278200C Wear-resistant, sintered iron alloy and process for producing the same |