A hybrid oil pump for a motor vehicle includes a pump device, a separate electric motor which is exclusively associated with the hybrid oil pump, and an input shaft. The pump device is electrically drivable by the electric motor or mechanically drivable via the input shaft. An engine lubrication system and a vehicle include such a hybrid oil pump.

A piston arrangement for a clean combustion engine, such as a hydrogen engine. The piston arrangement comprises a piston configured for reciprocal movement inside a cylinder having a cylinder wall, the piston having a piston head configured to face a first compartment with pressurized gas, a sealing arrangement comprising at least one sealing ring configured to be arranged to seal the piston to the cylinder wall and separating the first compartment from a second compartment, and a water channel extending from an interior of the piston to the sealing ring to provide water for lubricating the sealing ring. The piston head comprises a pumping element configured to be arranged to pressurize the water in the water channel by pressurised gas in the first compartment.

A piston arrangement for a clean combustion engine, such as a hydrogen engine. The piston arrangement comprises a piston configured for reciprocal movement inside a cylinder having a cylinder wall, the piston having a piston head configured to face a first compartment with pressurized gas, a sealing arrangement comprising at least one sealing ring configured to be arranged to seal the piston to the cylinder wall and separating the first compartment from a second compartment, and a water channel extending from an interior of the piston to the sealing ring to provide water for lubricating the sealing ring. The piston head comprises a pumping element configured to be arranged to pressurize the water in the water channel by pressurised gas in the first compartment.

The present disclosure is applicable to all gear trains using a journal bearing as a means of supporting gear shaft rotation. It is related in some embodiments to a system and method for supplying lubricant to the journal bearings of a gear-turbofan engine gear train when the fan rotor is subjected to a wind-milling condition in both directions, either clockwise or counterclockwise.

A control device for a multi-stage automatic transmission-equipped vehicle includes a hydraulic power controller, a combustion controller configured to, if a predetermined combustion stop condition is satisfied when the vehicle is traveling, perform deceleration-period combustion stop control, and limit combustion restart triggered by a reduction in rotational speed of an internal combustion engine, during execution of the deceleration-period combustion stop control, and a motoring controller configured to control the rotational drive of the internal combustion engine by a motor during execution of the deceleration-period combustion stop control so that the rotational speed of the internal combustion engine is maintained at a predetermined rotational speed during a period of time from the time that the rotational speed of the internal combustion engine decreases to the predetermined rotational speed until downshifting to a predetermined gear ratio is completed.

An oil pump for an engine is disclosed. The oil pump may include a first pump mechanism configured to supply oil to a main lubrication gallery of the engine, and a second pump mechanism configured to supply oil to a piston cooling gallery of the engine. The first pump mechanism may be designed for a first type of engine and the second pump mechanism may be designed for a second type of engine. The first type of engine may have a greater quantity of cylinders than the second type of engine.

The present invention encompasses a system and method for automatically replacing vehicle fluid, such as engine oil, with a robotic serving unit or robotic machine. The robotic machine comprises a motorized, autonomously maneuverable unit that has on its top a drainage arm to connect with an oil drain plug of a vehicle. In a preferred embodiment, the oil drain plug comprises a hollow interior for the drainage arm to connect with and drain the oil, and can also comprise a sealable element to retain the oil.

An oil pump for an engine is disclosed. The oil pump may include a first pump mechanism configured to supply oil to a main lubrication gallery of the engine, and a second pump mechanism configured to supply oil to a piston cooling gallery of the engine. The first pump mechanism may be designed for a first type of engine and the second pump mechanism may be designed for a second type of engine. The first type of engine may have a greater quantity of cylinders than the second type of engine.

A controller increases an actual oil pressure up to a transient oil pressure (an actuating oil pressure) and then supplies oil adjusted to have the transient oil pressure (the actuating oil pressure) to valve stopping mechanisms to actuate the valve stopping mechanisms. The controller, when actuating the valve stopping mechanisms, starts increase in an intake filling amount when the actual oil pressure increases up to a predetermined determination value set at the transient oil pressure (the actuating oil pressure) or lower.

A control device for an internal combustion engine is provided which enables control of dilution of oil by fuel and water drops, i.e., control of the amount of so-called oil dilution. The control device for an internal combustion engine that is lubricated or cooled by oil includes: a variable displacement oil pump capable of varying the amount of discharge of the oil; an air-fuel ratio sensor for sensing an air-fuel ratio of the internal combustion engine; and an ECU for controlling the amount of discharge of the variable displacement oil pump. The ECU controls the amount of discharge of the variable displacement oil pump, based on the air-fuel ratio sensed by the air-fuel ratio sensor.