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| Number | Title | Issue Date |
| 7530337 | High overlap camshaft for improved engine efficiency A vehicle may include a drive axle, an engine assembly, a coupling device, and an engine load management system. The engine assembly may include a valvetrain including a fixed-lobe camshaft and intake and exhaust valves supported by the engine assembly. The fixed-lo... | 05/12/2009 |
| 7438046 | Failure detection apparatus for variable valve timing and lift control system of internal combustion engine A failure detection apparatus for preventing erroneous detection due to a degradation of a sensor and thereby accurately performing failure detection of a variable valve timing and lift control system is provided. The detection apparatus detects a failure of a varia... | 10/21/2008 |
| 7377239 | Method for operating an internal combustion engine, computer program product, computer program, and control and/or regulating device for an internal combustion engine A method for operating an internal combustion engine, a computer program product, a computer program, and a control and/or regulating device for an internal combustion engine make detection of an erroneously permanently closed intake valve for a cylinder of the inte... | 05/27/2008 |
| 7357019 | Faulty lifter oil manifold assembly solenoid diagnostic system A diagnostic system that detects a faulty lifter oil manifold assembly solenoid includes a current measurement module, a time delay module, a voltage measurement module, and a diagnostic module. The current measurement module measures current flowing through the sol... | 04/15/2008 |
| 7302930 | Air induction system and assembly method for an intake manifold with a single shaft and sensor for activating air control valves The present invention utilizes a single shaft with cam-actuated control valves and one linear solenoid for control of air flow control vales in the air induction system for a V-type engine. According to various exemplary embodiments of the present invention, the sin... | 12/04/2007 |
| 7273026 | Roller follower body The present invention relates to a roller follower, comprising an outer surface, enclosing a first cavity, a second cavity, and a transition opening, wherein the first cavity includes a first inner surface configured to house a cylindrical insert the second cavity i... | 09/25/2007 |
| 7178488 | Device comprising at least one functional unit of a camshaft adjusting device In an arrangement comprising at least one operating unit of a camshaft adjusting device for an internal combustion engine, the operating unit and at least one ventilation unit of a ventilation device are combined in an assembly module. ... | 02/20/2007 |
| 7178493 | Method and system to avoid piston-valve collision A method and system to avoid collision of piston and engine valves is provided. This facilitates use of a fully flexible variable valve actuation system over its operating range, without arbitrary constraints. Included is actuation control of the engine valve, deter... | 02/20/2007 |
| 7131407 | Valve operating system for internal combustion engine A valve operating system includes: a decompression cam member that is provided on a camshaft, and moves between an operative position C where an exhaust tappet is operated in a valve opening direction in a compression stroke and an inoperative position D where the e... | 11/07/2006 |
| 7104121 | Valve seat gauging system A gauging system for checking a valve seat and a valve guide of an engine part, the system comprising: a gauge support mountable to a stable platform; a gauge which, in use, depends from the gauge support and has a... | 09/12/2006 |
| 6907870 | Multiple operating mode engine and method of operation A multi-mode internal combustion engine and method of operating the engine is provided which is capable of operating in a variety of modes based on engine operating conditions to enhance fuel efficiency and reduce emissions. The multi-mode engine include a fuel deli... | 06/21/2005 |
| 6814052 | Method for controlling the valve lift of discretely adjustable inlet valves in a multi-cylinder internal combustion engine To avoid a sudden change in torque when switching over the valve lift of discretely adjustable inlet valves, the valve lift is firstly only adjusted for a section of cylinders, while the valve lift for the remaining section of cylinders is switched over after a dela... | 11/09/2004 |
| 6705261 | Multi-valve engine with gas exchange channel between inlet ports An intake valve phase shift in multi-valve engines to enhance air-fuel mixing and optimum combustion at all operating conditions. The intake valve members are independently operated by electro-mechanical actuators or the like, and activated and deactivated by the el... | 03/16/2004 |
| 6568358 | Multicylinder internal combustion engine with gas flow lift valves actuated by electro-magnetic actuators The invention relates to a multi-cylinder internal combustion engine with gas flow lift valves actuated by electromagnetic actuators and controlling the intake and the exhaust of the cylinder combustion chambers. The cross-sectional area of the actuators ... | 05/27/2003 |
| 6553961 | Intake valve timing in multi-valve, camless engines Two intake valves are independently operated by electro-mechanical actuators and activated by the engine electronic controller. One tumble-type intake valve and one conventional intake valve are provided in each cylinder. The valve members are individuall... | 04/29/2003 |
| 6415755 | Valve clearance adjusting tool and method for adjusting valve clearance Valve clearance adjusting shims in an internal combustion engine having an overhead cam, are removed and replaced by compressing a valve spring through a cam follower forcibly held against the spring pressure by a valve clearance tool. A method for reliev... | 07/09/2002 |
| 6394050 | Actuator piston assembly for a rocker arm system The present invention is directed to an actuator piston assembly for use in a rocker arm system. The actuator piston assembly is capable of actuating at least one engine valve during for example engine braking. The actuator piston assembly includes a pist... | 05/28/2002 |
| 6386155 | Internal combustion engine variable valve characteristic control apparatus and three-dimensional cam Variable valve characteristic control apparatuses realize a change in a valve characteristic in accordance with a requirement of an internal combustion engine and a three-dimensional cam for use in the variable valve characteristic control apparatus. In t... | 05/14/2002 |
| 6360704 | Internal combustion engine variable valve characteristic control apparatus and three-dimensional cam Variable valve characteristic control apparatuses realize a change in a valve characteristic in accordance with a requirement of an internal combustion engine and a three-dimensional cam for use in the variable valve characteristic control apparatus. In t... | 03/26/2002 |
| 6279522 | Drive train for overhead cam engine A drive train for a four stroke, overhead cam engine is provided, comprising a crankshaft, connecting rod, and piston assembly for reciprocating the piston within the cylinder bore of a cylinder block. An internally profiled cam gear is driven around an a... | 08/28/2001 |
| 6276315 | Valve opening and closing mechanism in engines When a valve 10 is opened, a locking ball 8 moves upward with respect to a rocker arm 3 and the locking ball is located between the rocker arm 3 and a push rod 5. The push rod 5 moves downward integral with the rocker arm 3 in a condition the push rod 5 i... | 08/21/2001 |
| 6244228 | Rotary-to-linear motion converter and use thereof A rotary-to-linear converter for use with a valve actuation device having a linear reciprocating cam shaft having longitudinally extending cam grooves that are engaged by captive cam followers which oscillate up and down in response to sideways reciprocat... | 06/12/2001 |
| 6220209 | Rocking follower mechanism for three-dimensional cam A rocking follower mechanism for a three-dimensional cam is provided. The rocking follower mechanism prevents a hit sound without generating excessive abrasion on a cam follower or a cam surface of the three-dimensional cam, while providing a wide portion... | 04/24/2001 |
| 5579731 | Apparatus for synchronizing engines An engine which employs a cam follower mechanism to reduce wear and reduce the size of an assembled engine. The cam follower mechanism utilizes guide rails located to reduce side thrust on the valve stem. The engine employs a high speed quill shaft to syn... | 12/03/1996 |
| 5546898 | Device for controlling the flow of intake and exhaust gases in an internal combustion engine Disclosed is a device for controlling the flow of intake and exhaust gases in an internal combustion engine, which comprises a cylinder head with a plurality of cylinders each forming combustion chamber for burning air/fuel mixture to produce a mechanical... | 08/20/1996 |
| 5483929 | Reciprocating valve actuator device A valve activation device having a linear reciprocating cam shaft having longitudinally extending cam grooves that are engaged by captive cam followers which oscillate up and down in response to sideways reciprocation of the camshaft for activating intake... | 01/16/1996 |
| 5301638 | Actuating arrangement for a lift valve An actuating arrangement for a lift valve to be actuated by a cam includes a flexible endless tension member extending in a loop around two rollers and engaging a cam on one side and a valve on the other side.... | 04/12/1994 |
| 5117864 | Valve seal tool A valve seal tool includes a connector conduit directed into an air manifold, wherein the air manifold fixedly mounts a series of flexible conduits, each flexible conduit including a quick-connector mounted at its distal terminal end for securement to a r... | 06/02/1992 |
| 4991551 | Apparatus for preventing reverse rotation of an engine An engine reverse rotation prevention apparatus provided in an engine having valve opening and closing means which is in slidable contact with a cam provided on a camshaft. The valve opening and closing means is interconnected with a valve. The engine rev... | 02/12/1991 |
| 4733535 | Apparatus for determining the exhaust valve timing of an engine supercharged by a turbo-compressor The camshaft of a turbocharged internal combustion engine is designed to account for the distance between each cylinder and the preceding cylinder in firing order. The camshaft is designed so that the exhaust valve of, say, cylinder number 4 opens at a su... | 03/29/1988 |
| 4461062 | Method for adjusting the valve control of a reciprocating piston internal combustion engine, especially of a diesel engine A method and apparatus for the adjustment of the valve control of a reciprocating piston internal combustion engine with a cam shaft driven from the crankshaft by an endless, flexible transmission member, in which the cam shaft and a valve control adjustm... | 07/24/1984 |
| 4364345 | Split type internal combustion engine An internal combustion engine is disclosed which includes a first cylinder unit always active and a second cylinder unit inactive when the engine load is below a given value. Means is provided for operating the intake and exhaust valve means associated wi... | 12/21/1982 |
| 4218994 | Fluid intake and exhaust assemblies for positive displacement apparatus Disclosed are intake and exhaust assemblies for forced air intake, reciprocating piston, internal combustion engine. Alternate embodiments of the air intake valve assembly include a hollow tube defining the intake port with means operatively coupling the ... | 08/26/1980 |
| 4102317 | Apparatus for igniting charcoal briquettes There is disclosed a structure for rapidly and efficiently igniting charcoal briquettes of the type employed with home barbeque grills. A housing generally comprises a longitudinal cylindrical form fabricated from a plurality of non-combustible rings which are... | 07/25/1978 |
| 3973548 | Engine with die cast static parts An internal combustion engine, the static parts of which are formed as die castings. The engine includes a plurality of cylinders each closed at its upper end by an individual cylinder head casting. Each cylinder head casting has at least two tubular exte... | 08/10/1976 |
| 3953969 | System for purifying exhaust gas of a spark ignition type four stroke internal combustion engine The valve-overlapping period of a spark ignition type, four stroke internal combustion engine extends within the range of 60° to 90° of crank angle with the valve overlapping period being generally equally divided to each side of the piston top dead cen... | 05/04/1976 |
