About 20 results
https://drivepatents.com/patents/1003522 · 11 Apr 2012
Apparatus and method for converting an internal combustion engine from a normal engine operation (20) to an engine braking operation (10). The engine includes exhaust valve train components comprising at least one exhaust valve (300) and at least one cam (...
https://drivepatents.com/patents/1012808 · 25 May 2011
Lost motion systems and methods for providing engine valves with variable valve actuation for engine valve events are disclosed. The system may include a master piston hydraulically linked to a slave piston, and a dedicated cam operatively connected to the...
https://drivepatents.com/patents/1071582 · 21 Dec 2005
The cam includes a fore cam area (31) which is between the cam base circle (33) and main cam area (32) and whose profiling produces a rise in the cam lift speed followed by a drop in the cam lift speed followed by a further rise in the cam lift speed. Inde...
https://drivepatents.com/patents/1079454 · 9 Mar 2005
A diesel engine intake cam profile creates two intake valve events separated by a short dwell period each engine cycle. A relatively low valve lift during an engine exhaust event allows a portion of the exhaust gas to flow into an intake manifold and mix w...
https://drivepatents.com/patents/1079931 · 23 Feb 2005
In a Diesel engine with variably actuated valves, the ends of the two inlet ports (I) associated with each cylinder have different geometries, so as to generate different levels of swirl of the induced air within the cylinder. The two inlet valves (V I ) a...
https://drivepatents.com/patents/1080970 · 5 Jan 2005
A control system for an internal combustion engine, which is capable of reducing exhaust emissions during and after the start of the engine. A control system is capable of changing the valve-closing timing of intake valves relative to the valve-opening tim...
https://drivepatents.com/patents/1086411 · 16 Jun 2004
A three-step cam-profile-switching roller finger follower (60) includes a body (62) with low-lift (80), high-lift (82) and medium-lift (84) body sections. Low, (66) high (68) and medium (70) cam followers are carried by the low-lift, high-lift and medium-l...
https://drivepatents.com/patents/1086394 · 16 Jun 2004
A method of variably actuating a valve (90) of an engine (40) includes selecting one of three valve lift profiles dependent at least in part upon engine operating conditions and parameters. The selected valve lift profile is phased relative to the angular ...
https://drivepatents.com/patents/1086850 · 2 Jun 2004
The invention provides a control method of intending to improve a heat efficiency by an Atkinson cycle, improve a charging efficiency, improve an efficiency of a supercharger and increase a freedom of cam design. In particular, the invention relates to a c...
https://drivepatents.com/patents/1099227 · 8 Jan 2003
In a Diesel engine with variably actuated valves, the cam (9) controlling each inlet valve (VI) is shaped to provoke the opening of the respective inlet valve (VI) during the engine's normal exhaust phase and thus realize exhaust gas recirculation (EGR) wi...