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| Number | Title | Issue Date |
| 7921823 | Hydraulic play compensation device The hydraulic play compensation device, having an outer cylinder part which is closed on one side by a base and in which a piston element which lies on its inside is guided so as to be longitudinally displaceable, with a guide gap, having an oil pressure space havin... | 04/12/2011 |
| 7464679 | Hydraulic lash adjuster What is proposed is a hydraulic lash adjuster (1), for example for a valve train of an internal combustion engine. The lash adjuster (1) comprises a hollow cylindrical housing (2) that is inter-inserted with an axially relatively displaceable pr... | 12/16/2008 |
| 7458352 | Switchable valve drive element of an internal combustion engine A switchable valve drive element of an internal combustion engine can be actuated hydraulically. A valve tappet which can be displaced axially in a bore of the machine housing by the cam of a camshaft. A switching duct adjoins the valve tappet and is filled with a h... | 12/02/2008 |
| 7434557 | Hydraulic valve clearance compensation element A hydraulic reverse spring valve clearance compensation element (RSHVA) for a valve train of an internal combustion engine comprising: a housing (2), which has a blind bore (3), in which a piston (4) is guided ... | 10/14/2008 |
| 7431001 | Rail used as a torsional stop for the valve train of an internal combustion engine, and roller tappet arrangement A rail used as a torsional stop for the valve train of an internal combustion engine is disclosed. The rail includes spaces (10) which are arranged in a row spaced apart at a distance from one another within the rail (8) and accommodate inserted valve ... | 10/07/2008 |
| 7421994 | Hydraulic lash adjuster having a check valve cartridge sub-assembly An improved hydraulic lash adjuster including a cup-shaped adjuster body, and a plunger assembly disposed within the adjuster body. The plunger assembly includes a stepped axial bore extending from a body inner end to a central oil passage opening onto a hemispheric... | 09/09/2008 |
| 7409941 | Valve-deactivating hydraulic lifter having a vented internal lost motion spring A deactivating hydraulic valve mechanism includes a hydraulic element assembly disposed within cup within a pin housing slidably disposed within a bore in a body. A transverse bore in the pin housing contains selectively-retractable locking pins that engage a lockin... | 08/12/2008 |
| 7395792 | Deactivation roller hydraulic valve lifter A deactivation valve lifter includes a lifter body. The lifter body has a first end configured for engaging a cam of an engine and at least one annular pin chamber. A pin housing includes a pin housing bottom. The pin housing bottom defines at least one pin stop ape... | 07/08/2008 |
| 7380531 | Variable valve drive for changing the control timing of cam-actuated gas-exchange valves A variable valve drive for changing control timing of cam-actuated gas-exchange valves of an internal combustion engine is provided, with a tappet (6a, 6b, 6c), which, with convex cam engaging contour (5), engages a c... | 06/03/2008 |
| 7363894 | Switchable valve-drive component A switchable valve-drive component (1) for variable transmission of a stroke generated by one or more cam projections to a gas-exchange valve of an internal combustion engine is provided. The valve-drive component (1) has transmission elements (3, 4... | 04/29/2008 |
| 7353698 | Test stand for simulation of the exhaust flow of an internal combustion engine This invention relates to a test stand for simulation of the exhaust flow of an internal combustion engine, comprising a cylinder (36) and a base body (39) which is designed as a cylinder head and in which at least on... | 04/08/2008 |
| 7350492 | Guide gib for the valve operating mechanism of an internal combustion engine In a guide gib for the valve operating mechanism of an internal combustion engine, having holding spaces (12, 13), which are arranged in the gib (8) at intervals one behind the other, for valve tappets, wherein to prevent a valve tappet from rotating a... | 04/01/2008 |
| 7341034 | Hydraulic tappet A hydraulic tappet including: a bottomed cylindrical body; a plunger slidably fitted in the body; a check valve mounted at one end of the plunger so that the check valve is interposed between a high-pressure chamber and an oil chamber, the high-pressure chamber bein... | 03/11/2008 |
| 7328676 | Hydraulic valve play compensation element A hydraulic valve play compensation element for an internal combustion engine is provided as a reverse-spring/free-ball element, with a cylindrical housing, a cylindrical piston (21) guided therein with sealing play and a control valve (20), which is a... | 02/12/2008 |
| 7322329 | Assembly process for hydraulic valve lifters to reduce variation in valve lift Valve lift variation associated with a deactivation roller hydraulic valve DRVHL (DRHVL) can result in unacceptable valve overlap and idle conditions for an internal combustion engine. Two sources of length variation in a DRHVL are leakdown and residual mechanical l... | 01/29/2008 |
| 7308879 | Deactivation roller hydraulic valve lifter A deactivation valve lifter includes a lifter body. The lifter body has a first end configured for engaging a cam of an engine and at least one annular pin chamber. A pin housing includes a pin housing bottom. The pin housing bottom defines at least one pin stop ape... | 12/18/2007 |
| 7299778 | Switchable cam follower The invention proposes a switchable cam follower (1) for a valve train of an internal combustion engine, said cam follower comprising two elements (2, 3) telescoped into each other and, axially displaceable relative to each other. A bore (4) com... | 11/27/2007 |
| 7296548 | Deactivation roller hydraulic valve lifter A deactivation valve lifter includes a lifter body. The lifter body has a first end configured for engaging a cam of an engine and at least one annular pin chamber. A pin housing includes a pin housing bottom. The pin housing bottom defines at least one pin stop ape... | 11/20/2007 |
| 7275507 | Rail used as a torsional stop for the valve train of an internal combustion engine, and roller tappet arrangement A rail used as a torsional stop for the valve train of an internal combustion engine is disclosed. The rail includes spaces (10) which are arranged in a row spaced apart at a distance from one another within the rail (8) and accommodate inserted valve ... | 10/02/2007 |
| 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 |
| 7263956 | Valve lifter assembly for selectively deactivating a cylinder A valve lifter assembly for deactivating a cylinder in an internal combustion engine. The valve lifter assembly is provided with a plunger movably disposed within a bore of a main body member to controllably isolate the cam lift from the rocker arm and valve of the ... | 09/04/2007 |
| 7261075 | Hydraulic support element The invention relates to a hydraulic support element (1) for a valve gear for an internal combustion engine. Said element consists of a cylindrical hollow case (2) in whose bore hole (3) a pressure piston (4) made of a glass or carbon fib... | 08/28/2007 |
| 7246584 | Force-transmitting arrangement for a valve train of an internal-combustion engine A force-transmitting arrangement (4) for a valve train (1) of an internal-combustion engine (2) is provided with hydraulic valve play compensation device (6) with a hollow cylindrical compensation piston (13). This borders, on one ... | 07/24/2007 |
| 7246585 | Valve-deactivating hydraulic lifter having a vented internal lost motion spring A deactivating hydraulic valve mechanism includes a hydraulic element assembly disposed within a pin housing slidably disposed within a bore in a body. A transverse bore in the pin housing contains selectively-retractable locking pins that engage a groove in the bod... | 07/24/2007 |
| 7246590 | Valve train of an internal combustion engine comprising a tappet and a tappet pushrod The invention proposes a valve train (1) of an internal combustion engine comprising a tappet (7) and a tappet pushrod (1) that is actuated by said tappet (7), said tappet pushrod (1) being at least partly hollow and comprising on ... | 07/24/2007 |
| 7246589 | Valve train of an internal combustion engine comprising a tappet and a tappet pushrod The invention proposes a valve train of an internal combustion engine comprising a tappet (7) and a tappet pushrod (1) that is actuated by said tappet (7), said tappet pushrod (1) being at least partly hollow and comprising on one end ( | 07/24/2007 |
| 7243629 | Hydraulic valve lifter assembly A hydraulic valve lifter assembly including a lifter body and a cam follower. The cam follower is mounted to an end of the lifter body wherein the lifter body has a first diameter over a first body portion for engaging a wall of an engine bore. The lifter body also ... | 07/17/2007 |
| 7237520 | Hydraulic valve-lash-adjusting element (HVA) A hydraulic valve-lash-adjusting element (HVA) for the valve train of an internal combustion engine, wherein: a housing (1) has a blind bore (2) in which a piston (3) is guided with sealing clearance and is in ... | 07/03/2007 |
| 7219639 | Drag lever of a valve mechanism in an internal combustion engine Disclosed is a drag lever (1) comprising two side walls (2, 3) which are connected together by a transversal bar (4) which is arranged on an end (6) of the lower side (5) thereof on an end (6) thereof on a head of a support ... | 05/22/2007 |
| 7210437 | Periodically actuable tappet for a valve train or a pump drive The invention proposes a periodically actuable tappet (1) for a valve train, said tappet (1) comprising a hollow cylindrical skirt (2) that can be arranged through an outer peripheral surface (3) in a guide bore (4) of a surroundin... | 05/01/2007 |
| 7210439 | Switching element for a valve train of an internal combustion engine The invention proposes a switching element (1) for a valve train of an internal combustion engine, particularly for valve deactivation, with a simple-to-implement measure for adjusting the coupling lash of its coupling means (8) in a receptacle (6 | 05/01/2007 |
| 7210438 | Internal combustion engine having valves with variable actuation each provided with a hydraulic tappet at the outside of the associated actuating unit In an internal combustion engine with variable actuation valves, each variable actuation valve is actuated by an actuator assembly including an actuating piston slidably mounted in a guide bushing. Between the actuating piston and the stem of the respective valve is... | 05/01/2007 |
| 7207303 | Switching element A switch element (1) is proposed for valve shut-off, fabricated as cam follower for a plunger rod valve drive of an internal combustion engine, having an outer part (2) and an inner element (4) axially movable in its bore (3) and with rot... | 04/24/2007 |
| 7191745 | Valve operating assembly The present invention relates to a lash adjuster body, comprising A lash adjuster body, comprising an outer surface, enclosing a cavity, wherein the cavity includes an inner surface configured to accommodate an insert and a spring; and the cavity is fabricated throu... | 03/20/2007 |
| 7156079 | Diesel engine A diesel engine 1 of the present invention comprises: a camshaft 13 with a cam 21; a fuel injection pump 12 having a plunger 84; a tappet for driving the plunger 84; and a slide portion 2b. The tappet includes ... | 01/02/2007 |
| 7146953 | Mechanical valve play compensation element for a valve drive on a piston combustion engine The invention relates to a mechanical valve play compensation element for a valve drive on a piston combustion engine, comprising a first pressure part (1) which is axially displaceable in relation to a second pressure part (2) and which is fixed in su... | 12/12/2006 |
| 7146955 | Hydraulic tappet clearance compensation device The invention relates to a hydraulic tappet clearance compensation device (1) for a valve gear of an internal combustion engine, the high pressure chamber (8) of which device can be rapidly and easily vented. For this purpose an annular collar (11 | 12/12/2006 |
| 7146954 | Hydraulic valve-lash-adjusting element A reverse spring hydraulic valve-lash-adjusting element for the valve train of an internal combustion engine having a plunger (1), in the plunger head (2) of which a control valve (5) is arranged, this control valve (5) controlling a cent... | 12/12/2006 |
| 7140336 | Internal combustion engine with valves with variable actuation which are driven by a single pumping piston and controlled by a single solenoid valve for each engine cylinder In an internal combustion engine with variable actuation valves, each variable actuation valve is actuated by an actuator assembly including an actuating piston slidably mounted in a guide bushing. Between the actuating piston and the stem of the respective valve is... | 11/28/2006 |
| 7137374 | Adjustable hydraulic valve lifter An adjustable hydraulic valve lifter has a lifter body and an internal cylindrical body. The lifter body has a first longitudinally cylindrical internal bore and a first substantially closed lower end, and the internal cylindrical body is axially slideable and rotat... | 11/21/2006 |
