Abstract: A system for an engine drive that engages a single timing band with a camshaft, a crankshaft and various accessory drives in such a configuration that the camshaft is rotated in a direction opposite that of the crankshaft, while ensuring a reflex wrap angle around each drive sprocket coupled to the camshaft, crankshaft and various accessory drives.

Abstract: Systems and methods for an engine drive system are described herein. In one example, the system includes a camshaft, a crankshaft, and an accessory drive. The system may include a first chain coupling the camshaft and crankshaft in a first plane, and a second chain coupling the accessory drive and crankshaft in a second plane non-planar to the first plane. The system may further include a chain guide including a first surface guidingly contacting the first chain and a second surface guidingly contacting the second chain.

Abstract: A system for an engine comprising an engine drive system and an oil delivery system is provided. According to one embodiment, the engine drive system includes a chain that engages a plurality of drive sprockets and a chain guide that pivots about a pin. Further, the pin may include an internal oil passage that is in fluidic communication with the oil delivery system. In this way, improved oil lubrication can be provided with simplified structure and manufacturing.

Abstract: A system for an engine drive that engages a timing band with a first camshaft, a driveshaft and a crankshaft is provided. The system further includes a gear drive including a first gear coupled to the driveshaft and a second gear coupled to a second camshaft. The second camshaft is positioned between the first camshaft and the driveshaft such that the shafts are horizontally coplanar.

Abstract: A system for an engine drive that engages a timing band with a camshaft and a crankshaft is provided. The system further includes a coupling device that couples the camshaft to another camshaft that is not engaged with the timing band. The coupling device and the camshafts are in such a configuration that the camshafts rotate in opposing directions.

Abstract: A system for an engine drive that engages a timing band with a first camshaft, a driveshaft and a crankshaft is provided. The system further includes a gear drive including a first gear coupled to the driveshaft and a second gear coupled to a second camshaft. The second camshaft is positioned between the first camshaft and the driveshaft such that the shafts are horizontally coplanar.

Abstract: A system for an engine drive that engages a timing band with a camshaft and a crankshaft is provided. The system further includes a coupling device that couples the camshaft to another camshaft that is not engaged with the timing band. The coupling device and the camshafts are in such a configuration that the camshafts rotate in opposing directions.

Abstract: A system for an engine comprising an engine drive system and an oil delivery system is provided. According to one embodiment, the engine drive system includes a chain that engages a plurality of drive sprockets and a chain guide that pivots about a pin. Further, the pin may include an internal oil passage that is in fluidic communication with the oil delivery system. In this way, improved oil lubrication can be provided with simplified structure and manufacturing.

Abstract: Systems and methods for an engine drive system are described herein. In one example, the system includes a camshaft, a crankshaft, and an accessory drive. The system may include a first chain coupling the camshaft and crankshaft in a first plane, and a second chain coupling the accessory drive and crankshaft in a second plane non-planer to the first plane. The system may further include a chain guide including a first surface guidingly contacting the first chain and a second surface guidingly contacting the second chain.

Abstract: A system for an engine drive that engages a single timing band with a camshaft, a crankshaft and various accessory drives in such a configuration that the camshaft is rotated in a direction opposite that of the crankshaft, while ensuring a reflex wrap angle around each drive sprocket coupled to the camshaft, crankshaft and various accessory drives.

Abstract: A hydraulic tensioner for a drive system, including a flexible, inextensible drive element, has a bi-directional travel limiter associated with a hydraulically biased tensioning cylinder. The travel limiter is bi-directional because it limits not only loading of the tensioning cylinder against a tensioner shoe in a direction tending to tighten a drive element, but also resists movement of the tensioner shoe in a direction tending to allow slack in a drive element.

Abstract: A hydraulic tensioner for a drive system, including a flexible, inextensible drive element, has a bi-directional travel limiter associated with a hydraulically biased tensioning cylinder. The travel limiter is bi-directional because it limits not only loading of the tensioning cylinder against a tensioner shoe in a direction tending to tighten a drive element, but also resists movement of the tensioner shoe in a direction tending to allow slack in a drive element.

Abstract: A fuel pump drive system is provided. A system for an engine driven by an engine crankshaft may include a first variable cam device including a first hydraulic actuator, and a second variable cam device including a second hydraulic actuator. The system may further include an intermediate power transfer mechanism coupled between the first variable cam device and the second variable cam device upstream, in a direction of power flow from the engine crankshaft, of the first hydraulic actuator and the second hydraulic actuator. The system may further include an auxiliary device coupled to and driven by the intermediate power transfer mechanism. In this way, because the auxiliary device is driven via the intermediate power transfer mechanism and thus derives its power from upstream of the hydraulic actuator of the variable cam device, the actuator can be adjusted without having to overcome resistance torque of the auxiliary device.

Abstract: The present invention is directed to a lubrication system having a gasket with integrated lubrication channel for providing lubrication to the surface of an engine part. Preferably, the gasket is a multilayer metal gasket comprised of an upper layer, a bottom layer, and an inner layer disposed between the upper and bottom layers. The gasket further comprises a lubrication channel disposed through the gasket. Lubrication from an oil feed may then be directed through the lubrication channel and directed onto the surface of the engine part to be lubricated.