| Patents for F01L 1 - Valve-gear or valve arrangements, e.g. lift-valve gear (30,520) |
|---|
| 07/31/1990 | US4944257 Cold-formed rocker arm with bearing flanges and splash plate |
| 07/31/1990 | US4944256 Rocker arm arrangement for internal combustion engine poppet valves and the like |
| 07/31/1990 | CA1272087A1 Single rocker shaft allowing central spark plug accommodation in an i,c, engine |
| 07/26/1990 | DE3902183A1 Device for increasing the permeability of inlet and outlet ports in internal combustion piston engines |
| 07/25/1990 | CN1044157A Coupling unit for transmission of alternative force moment |
| 07/24/1990 | US4942857 Combustion chamber for engine with multiple valves |
| 07/24/1990 | US4942855 Lubricating system of a valve mechanism for a double overhead camshaft engine |
| 07/24/1990 | US4942854 Valve operating device for use in internal combustion engine |
| 07/24/1990 | US4942853 Valve operating apparatus for an internal combustion engine |
| 07/24/1990 | US4942850 Double-flow valve for internal combustion engines |
| 07/18/1990 | EP0377829A2 Camshaft lubrication system for an internal-combustion engine |
| 07/17/1990 | US4941438 Hydraulic valve-lash adjuster |
| 07/17/1990 | CA1271676A1 Enhanced slipper profile for i.c. engine valve actuators |
| 07/14/1990 | WO1990008248A1 Coupling device for the transmission of alternating torque |
| 07/11/1990 | EP0376941A1 Variable camshaft timing system |
| 07/10/1990 | US4940450 Power transmission system using toothed belt of engine for vehicle |
| 07/10/1990 | US4940048 Boat-type rocker arm with flanges |
| 07/05/1990 | DE4003498A1 Cylinder head for internal combustion engine - has inlet and exhaust valve combined in double seat ring valve |
| 07/04/1990 | EP0376703A2 Engine control system |
| 07/04/1990 | EP0376455A1 Friction reducing rocker arm assembly |
| 07/04/1990 | EP0376445A1 A tappet assembly for an internal combustion engine |
| 07/04/1990 | EP0375792A1 Adjustable valve spring retainer for internal combustion engine |
| 07/04/1990 | EP0375742A1 Hydraulic engine valve lifter assembly. |
| 07/03/1990 | US4938188 Engine control apparatus |
| 07/03/1990 | US4938187 Fuel control apparatus for engine |
| 06/27/1990 | EP0374802A1 Camshaft driving arrangement for internal combustion engine |
| 06/26/1990 | US4936270 Composite light alloy member |
| 06/26/1990 | US4936266 Valve drive train for internal combustion engine |
| 06/26/1990 | US4936265 V-type internal combustion engine |
| 06/26/1990 | US4936264 Intake- and/or exhaust-valve timing control system for internal combustion engines |
| 06/21/1990 | DE3940740A1 Valve mechanism for IC engine - has arrangement of tappets for valves and pump injector |
| 06/21/1990 | DE3911141A1 Bucket tappet |
| 06/21/1990 | DE3842267A1 Variable valve overlap for four-stroke engines by means of planetary gearing with adjustment |
| 06/21/1990 | DE3842251A1 Variable valve overlap for four-stroke engines by means of intermediate gearing with adjustment |
| 06/21/1990 | DE3841839A1 Valve arrangement |
| 06/19/1990 | US4934348 Valve operation control system of internal combustion engine |
| 06/19/1990 | US4934323 Valve lever with ball bearing pivot and retainer |
| 06/13/1990 | EP0372587A1 Internal combustion engine |
| 06/13/1990 | DE3923371C1 IC engine valve control system - can adjust exhaust valve lift to give throttle effect during engine braking |
| 06/12/1990 | US4932377 Internal combustion engine |
| 06/07/1990 | DE3920528C1 IC engine camshaft drive - incorporates braking system controlled by microprocessor to eliminate drive chain chatter |
| 06/06/1990 | EP0371760A1 High strength high chromium cast iron and valve rocker arm made thereof |
| 06/05/1990 | US4930463 Electro-rheological valve control mechanism |
| 05/31/1990 | WO1990005842A1 Internal combustion engine |
| 05/30/1990 | EP0370672A1 Mechanism for transmitting rotational motion from one shaft to another |
| 05/29/1990 | US4928650 Operating arrangement for internal combustion engine poppet valves and the like |
| 05/29/1990 | US4928648 Method of operating an IC engine and an IC engine for performing the method |
| 05/29/1990 | US4928641 Lubricant supplying system for DOHC type multi-cylinder internal combustion engine |
| 05/29/1990 | US4928640 Autocalibration of camshaft phasing feedback in a variable valve timing system |
| 05/23/1990 | CN2057465U Ratchet fit timing mechanism |
| 05/22/1990 | US4926805 Push rod tube for high lift rocker arms |
| 05/22/1990 | US4926804 Mechanism for switching valve operating modes in an internal combustion engine |
| 05/17/1990 | DE3937225A1 IC engine overhead camshaft drive - has parallel gear train and belt drive with slightly different ratios |
| 05/17/1990 | DE3907039A1 Camshaft drive for an internal combustion engine |
| 05/17/1990 | DE3838501A1 Hydraulic bucket tappet for the valve gear of an internal combustion engine |
| 05/17/1990 | DE3838305A1 Cylinder head of an internal combustion engine |
| 05/15/1990 | US4924825 Outer guide means for a valve tappet |
| 05/15/1990 | US4924821 Hydraulic lash adjuster and bridge assembly |
| 05/09/1990 | EP0367532A1 Intake air flow control apparatus of internal combustion engine |
| 05/09/1990 | EP0367192A1 Valve driving mechanism for internal combustion engine |
| 05/08/1990 | US4922867 Valve stop mechanism for internal combustion engines |
| 05/08/1990 | US4922785 Tubular camshaft assemblies and the like |
| 05/03/1990 | WO1990004704A1 Phase change mechanism |
| 05/03/1990 | WO1990004703A1 Actuating system for a phase change mechanism |
| 05/03/1990 | DE3933943A1 Vehicle engine valve mechanism - includes three camshaft belt tensioning rollers, lower two hydraulically controlled and connected by springs to upper roller |
| 05/03/1990 | DE3933878A1 Vehicle engine valve mechanism - uses cylinder operated diamond shaped tensioning arm system for three tensioning rollers for camshaft driving belt |
| 05/02/1990 | EP0365757A2 Method of producing cams from a casting material |
| 05/01/1990 | US4920935 Hydraulic valve lash adjuster |
| 04/25/1990 | EP0365339A1 Actuation system for a phase mechanism |
| 04/25/1990 | EP0365338A1 Phase change mechanism |
| 04/25/1990 | EP0364532A1 Variable compression ratio direct injection engine |
| 04/24/1990 | US4919089 Valve operating system for internal combustion engine |
| 04/19/1990 | DE3835333A1 Concept for the variable valve timing on the basis of camshaft phase shift |
| 04/19/1990 | DE3834715A1 Adjustable valve gear for a lifting valve |
| 04/18/1990 | EP0364081A1 Failsafe method in connection with valve timing-changeover control for internal combustion engines |
| 04/18/1990 | EP0364069A1 Valve operating system of internal combustion engine |
| 04/18/1990 | EP0364028A1 Tubular camshaft manufacturing process |
| 04/18/1990 | EP0363600A1 Device for varying the angular position of a camshaft |
| 04/17/1990 | US4917059 Valve lash adjuster |
| 04/17/1990 | US4917058 Method of reducing pumping losses and improving brake specific fuel consumption for an internal combustion engine |
| 04/17/1990 | US4917057 Control method for valve-timing changeover in engine |
| 04/17/1990 | US4917056 Valve operation control system in internal combustion engine |
| 04/17/1990 | US4917052 Water pump apparatus in an internal combustion engine |
| 04/12/1990 | DE3912487C1 Tensioner for V IC engine camshaft drive chain or belt - has tensioning member, engaging received chain etc. run, of constant position with engine stopped |
| 04/12/1990 | DE3906725C1 Device for twisting a lift valve of an internal combustion engine |
| 04/11/1990 | EP0363161A1 Variable friction roller tappets |
| 04/11/1990 | EP0362687A1 Valve timing setting system for an internal-combustion engine the camshaft of which is driven by a belt, a chain or a gear |
| 04/10/1990 | US4915067 Valve operating system of internal combustion engine |
| 04/10/1990 | US4915066 Valve train for V-type double-overhead-camshaft engine |
| 04/10/1990 | US4915065 Valve actuation device for multi-valve type engine |
| 04/05/1990 | WO1990003499A1 Modular, self-contained hydraulic valve timing systems for internal combustion engines |
| 04/05/1990 | WO1990003498A1 Valve-controlled reciprocating piston internal combustion engine |
| 04/05/1990 | WO1990003497A1 Device for actuating the valves of internal combustion engines with adjustable valve-lifting cam |
| 04/04/1990 | EP0362076A1 Valve timing control system for internal combustion engine |
| 04/04/1990 | EP0361980A1 Valve timing control system |
| 04/04/1990 | EP0361861A1 Intake- and/or exhaust-valve timing control system for internal combustion engines |
| 04/04/1990 | EP0361637A1 Hydraulic valve lash adjuster |
| 04/04/1990 | EP0361221A1 Improved ceramic tipped pivot rod and method for its manufacture |
| 04/03/1990 | US4913106 Variable duration valve lifter improvements |
| 04/03/1990 | US4913105 Hydraulic lash adjuster |