A hybrid propulsion system includes a heat engine configured to drive a heat engine shaft. An electric motor is configured to drive an electric motor shaft. A transmission system includes at least one gearbox. The transmission system is configured to receive rotational input power from each of the heat engine shaft and the electric motor shaft and to convert the rotation input power to output power.

A hybrid propulsion system includes a heat engine configured to drive a heat engine shaft. An electric motor is configured to drive a motor shaft. A transmission system includes at least one gear box. The transmission system is configured to receive rotational input power from each of the heat engine shaft and the motor shaft and to convert the rotation input power to output power. The motor shaft includes a disconnect mechanism to allow the heat engine to rotate with the electric motor stopped. The heat engine shaft includes a disconnect mechanism to allow the electric motor to rotate with the heat engine stopped.

An electric supercharger-equipped moving machine includes: an engine; a supercharger configured to increase intake pressure of the engine; an electric motor including a motor driving shaft; a power transmitting path including a power transmitting shaft through which driving power of the engine is transmitted to a propulsive power generating body; and a switching clutch configured to be able to block power transmission from the electric motor to the power transmitting shaft. The motor driving shaft is connected to the supercharger so as to be able to drive the supercharger when the switching clutch is in a disengaged state. The motor driving shaft is connected to the power transmitting shaft so as to be able to drive the propulsive power generating body when the switching clutch is in an engaged state.

A hybrid propulsion system includes a heat engine configured to drive a heat engine shaft. An electric motor is configured to drive an electric motor shaft. A transmission system includes at least one gearbox. The transmission system is configured to receive rotational input power from each of the heat engine shaft and the electric motor shaft and to convert the rotation input power to output power.

The present invention relates to an electric compressor (9, 17) including a shaft (13) rotated by an electric motor by means of bearings (16), the shaft rotating a compressor wheel (14), the compressor (9) including two sealing segments (29a, 29b) mounted around the shaft (13) between the bearings (16) and the compressor wheel (14) and including a vent hole (31, 35, 38) for circulation of pollutant flows toward the outside of the compressor, the inlet of which is arranged between the two sealing segments, the vent hole including a non-return element (36).

Methods and systems for improving operation of an engine at higher speeds and loads are disclosed. In one example, fuel may be injected to an exhaust system of the engine so that temperatures of exhaust system components may be reduced when the engine is operated at higher speeds and loads.

A supercharging system includes a charging device having a turbine and a compressor, the compressor having a high speed shaft; a planetary gear set coupled to the high speed shaft and an electric motor, or generator, via a low speed drive shaft; a clutch unit; a power transmission for connecting a crank shaft of the combustion engine to the drive shaft via the clutch unit; at least one sensor to measure at least one physical parameter of the exhaust gases inside, or after having passed, an exhaust gas catalyzer of the internal combustion engine, the at least one sensor being configured to provide an output signal representing a measured value of the at least one physical parameter; and a system control unit to receive the output signal and to control the speed or effect of the electric motor, or generator, based on the output signal. A method is also disclosed.

Disclosed is a spring for preload in a planetary traction drive designed for a driven turbocharger on an engine. The ring roller of the planetary traction drive has two parts with a spring between the two parts for generating a preload force on the ring roller assembly of the planetary traction drive. The spring provides a spreading force on the ring roller, and allows for setting a desired preload force on the traction surfaces of the traction drive during assembly and operation, even with variations in manufacturing of the different parts of the traction drive.

Disclosed is an adjustable ring shim for a planetary traction drive designed for a driven turbocharger on an engine. The adjustable ring shim has two parts that interface through a ramp feature to provide an ability to vary the overall width of the ring roller assembly of the planetary traction drive. This adjustability in the width of the ring roller allows for setting a desired preload force on the traction surfaces of the traction drive during assembly, even with variation in manufacturing of the different parts of the traction drive.

A method of raising exhaust gas temperatures of a two-cycle uniflow scavenged engine at lower loads. At lower loads, the exhaust valves are activated with a frequency that is less frequent than every engine cycle. This exhaust valve deactivation may be combined with additional engine operating strategies, such as by using fewer than all cylinders as combusting cylinders, adjusting fueling to combusting cylinders, and reducing compressor output.