Patent application number | Description | Published |
20100180847 | VALVE LASH ADJUSTMENT SYSTEM FOR A SPLIT-CYCLE ENGINE - The present invention provides a valve actuation system comprising a valve train for actuating a valve, the valve train including actuating elements and a valve lash, and a valve lash adjustment system for adjusting the valve lash, wherein the valve train and the valve lash adjustment system do not share any common actuating elements. | 07-22-2010 |
20100180848 | VALVE LASH ADJUSTMENT SYSTEM FOR A SPLIT-CYCLE ENGINE - The present invention provides a valve actuation system comprising a valve train for actuating a valve, the valve train including actuating elements and a valve lash, and a valve lash adjustment system for adjusting the valve lash, wherein the valve train and the valve lash adjustment system do not share any common actuating elements. | 07-22-2010 |
20110083624 | Cylinder Head For An Engine - A cylinder head for an engine is provided comprising a monolithic structure forming an upper deck, a fire deck, at least one coolant jacket and a cavity to accommodate a fuel injector or an ignitor therein, the cavity defined by a wall connecting the fire deck with the upper deck. The wall connecting the fire deck with the upper deck, as well as other features of the cylinder head, are preferably arranged to support the fire deck against a deflection thereof by transmitting a mechanical load introduced on a flame face of the fire deck to the upper deck. A method of increasing the stiffness of the cylinder head is also provided. | 04-14-2011 |
20120192817 | VARIABLE FORCE VALVE SPRING - Devices and related methods are disclosed that generally involve variable force valve springs for controlling the motion of an engine valve. The force exerted by the valve spring can be adjusted by altering the pressure at which a fluid is supplied to a fluid chamber thereof, by altering the volume of the fluid chamber, and/or by changing the aggregate surface area over which fluid pressure is coupled to the engine valve. Associated fluid control systems are also disclosed herein, as are various methods for adjusting the force of a valve spring based on a variety of engine parameters, such as engine speed, engine load, and/or a combination thereof. | 08-02-2012 |
20120192818 | LOST-MOTION VARIABLE VALVE ACTUATION SYSTEM WITH CAM PHASER - Devices and related methods are disclosed that generally involve variable actuation of engine valves. In one embodiment, a valve train for a split-cycle internal combustion engine or an air hybrid split-cycle engine is provided that includes a cam phaser, a dwell cam, an adjustable mechanical element for performing a variable valve actuation function, and/or a valve seating control device. The devices and methods disclosed herein also have application in conventional internal combustion engines and can actuate inwardly-opening and/or outwardly-opening valves. | 08-02-2012 |
20120192840 | LOST-MOTION VARIABLE VALVE ACTUATION SYSTEM WITH VALVE DEACTIVATION - Devices and related methods are disclosed that generally involve the selective deactivation of one or more engine valves. In one embodiment, a split-cycle internal combustion engine is provided in which a high-speed trigger valve is used to fill and drain a hydraulic tappet that forms part of a lost-motion system of an engine valve. A spool valve can be used to selectively disconnect the tappet from the trigger valve, thereby deactivating the associated engine valve (i.e., preventing the engine valve from opening). The devices and methods disclosed herein also have application in conventional internal combustion engines and can be used with inwardly-opening and/or outwardly-opening valves. | 08-02-2012 |
20120192841 | SPLIT-CYCLE AIR HYBRID ENGINE WITH DWELL CAM - Devices and related methods are disclosed that generally involve actuating an engine valve with a cam having a dwell section. These devices and methods have application in split-cycle engines, air hybrid engines, conventional engines, and/or various combinations thereof. Both inwardly- and outwardly-opening valves can be actuated with the devices and methods disclosed herein. Additional valve train elements are disclosed, including rockers, lost-motion systems, and valve seating control devices. | 08-02-2012 |
20140182529 | LOST-MOTION VARIABLE VALVE ACTUATION SYSTEM WITH VALVE DEACTIVATION - Devices and related methods are disclosed that generally involve the selective deactivation of one or more engine valves. In one embodiment, a split-cycle internal combustion engine is provided in which a high-speed trigger valve is used to fill and drain a hydraulic tappet that forms part of a lost-motion system of an engine valve. A spool valve can be used to selectively disconnect the tappet from the trigger valve, thereby deactivating the associated engine valve (i.e., preventing the engine valve from opening). The devices and methods disclosed herein also have application in conventional internal combustion engines and can be used with inwardly-opening and/or outwardly-opening valves. | 07-03-2014 |
20140283772 | LOST-MOTION VARIABLE VALVE ACTUATION SYSTEM WITH CAM PHASER - Devices and related methods are disclosed that generally involve variable actuation of engine valves. In one embodiment, a valve train for a split-cycle internal combustion engine or an air hybrid split-cycle engine is provided that includes a cam phaser, a dwell cam, an adjustable mechanical element for performing a variable valve actuation function, and/or a valve seating control device. The devices and methods disclosed herein also have application in conventional internal combustion engines and can actuate inwardly-opening and/or outwardly-opening valves. | 09-25-2014 |