The present disclosure provides a sprocket structure of an engine including a crank sprocket provided in a cylinder block of an engine and driven by a crank shaft, a high pressure pump sprocket configured to receive rotational force from the crank sprocket through a timing belt, and a cam sprocket having an interior installed on a camshaft and an exterior rotatably coupled to the timing belt so as to be driven. Since a tensioner is fixed in a state in which tension is applied to the timing belt through jigs of the crank sprocket and the high pressure pump sprocket and the cam sprocket having a dual-structure, loss of tension is reduced, thus minimizing occurrence of an error of the timing belt to enhance quality of a product.

The present disclosure provides a sprocket structure of an engine including a crank sprocket provided in a cylinder block of an engine and driven by a crank shaft, a high pressure pump sprocket configured to receive rotational force from the crank sprocket through a timing belt, and a cam sprocket having an interior installed on a camshaft and an exterior rotatably coupled to the timing belt so as to be driven. Since a tensioner is fixed in a state in which tension is applied to the timing belt through jigs of the crank sprocket and the high pressure pump sprocket and the cam sprocket having a dual-structure, loss of tension is reduced, thus minimizing occurrence of an error of the timing belt to enhance quality of a product.

A vehicle includes an engine having a crankshaft, an electric machine having a shaft, and a front end accessory drive (FEAD). The FEAD includes a multi-speed pulley assembly mounted to one of the crankshaft and the shaft, a pulley mounted to the other of the crankshaft and the shaft, and a tension member trained around the multi-speed pulley assembly and the pulley. The multi-speed pulley assembly is configured to establish a low speed ratio between the shaft and the crankshaft and a high speed ratio between the shaft and the crankshaft. A vehicle controller is programmed to, in switch between the high speed ratio and the low speed ratio to optimize operating conditions of the FEAD.

A vehicle includes an engine having a crankshaft, an electric machine having a shaft, and a front end accessory drive (FEAD). The FEAD includes a multi-speed pulley assembly mounted to one of the crankshaft and the shaft, a pulley mounted to the other of the crankshaft and the shaft, and a tension member trained around the multi-speed pulley assembly and the pulley. The multi-speed pulley assembly is configured to establish a low speed ratio between the shaft and the crankshaft and a high speed ratio between the shaft and the crankshaft. A vehicle controller is programmed to, in switch between the high speed ratio and the low speed ratio to optimize operating conditions of the FEAD.

The present disclosure relates to an arrangement of auxiliary assemblies in a combustion machine including an electric machine which is operable as a generator and preferably also as a motor. The arrangement further includes an expansion machine, in particular an expansion machine of a waste heat recovery system for converting waste heat of the combustion machine or of an engine braking system into utilizable energy by way of a steam circuit, and a first group of auxiliary assemblies, including a water pump, a fuel predelivery pump, a high-pressure fuel pump, a steering assistance pump and an oil pump.

The present disclosure relates to an arrangement of auxiliary assemblies in a combustion machine including an electric machine which is operable as a generator and preferably also as a motor. The arrangement further includes an expansion machine, in particular an expansion machine of a waste heat recovery system for converting waste heat of the combustion machine or of an engine braking system into utilizable energy by way of a steam circuit, and a first group of auxiliary assemblies, including a water pump, a fuel predelivery pump, a high-pressure fuel pump, a steering assistance pump and an oil pump.

Power systems having reduced operating noise and associated methods are disclosed. An example power system includes an engine, a generator, a driveshaft, and a pulley system. The driveshaft may include at least one coupler configured to dampen vibration transferred by the driveshaft. The pulley system may include a first pulley and a second pulley that are drivingly coupled to one another via one or more belts. The generator may be configured to generate electric power using a rotational force received form the engine via the driveshaft and pulley system.

Power systems having reduced operating noise and associated methods are disclosed. An example power system includes an engine, a generator, a driveshaft, and a pulley system. The driveshaft may include at least one coupler configured to dampen vibration transferred by the driveshaft. The pulley system may include a first pulley and a second pulley that are drivingly coupled to one another via one or more belts. The generator may be configured to generate electric power using a rotational force received form the engine via the driveshaft and pulley system.

A belt slip monitor system and method configured to determine whether a belt coupled to a motor-generator is slipping based on operational states of first and second movable portions of the belt slip monitor, wherein the operational states of the first and second movable portions are dependent upon the tension in the belt.

A utility vehicle includes a plurality of ground-engaging members, a frame supported by the ground-engaging members, a powertrain assembly supported by the frame which includes an engine, an alternator coupled to the engine through a housing, and a heating, ventilation, and air condition (“HVAC”) assembly including a compressor operably coupled to the engine. The compressor is supported on a first side of the housing plate and the alternator is supported on a second side of the housing.