Abstract: An engine oil supply system for a motor vehicle and a method of controlling an engine oil supply system of a motor vehicle is disclosed in which, particularly during an engine overrun period or an engine shut-down, kinetic energy from the slowing engine is used to drive an oil pump so as to store oil in an oil accumulator for later use by one or more engine components without the engine using fuel. The stored oil allows a downsized oil pump to be used thereby saving fuel by providing a supply of oil in addition to or as an alternative to the oil supplied from the oil pump.

Abstract: A method is disclosed for heating a liquid supplied to an engine of a motor vehicle by a pump when the temperature of the liquid is low, thereby reducing the operating efficiency of the engine. The method comprises inefficient operation of the pump by constricting flow to create heat that is transferable to the liquid. Inefficient operation of the pump is enacted when service brakes are applied and the vehicle is decelerating to minimize negative impact on fuel economy and overall engine efficiency.

Abstract: An engine oil supply system for a motor vehicle and a method of controlling an engine oil supply system of a motor vehicle is disclosed in which, particularly during an engine overrun period or an engine shut-down, kinetic energy from the slowing engine is used to drive an oil pump so as to store oil in an oil accumulator for later use by one or more engine components without the engine using fuel. The stored oil allows a downsized oil pump to be used thereby saving fuel by providing a supply of oil in addition to or as an alternative to the oil supplied from the oil pump.

Abstract: In an energy storage and recovery system for a hybrid vehicle 1, the operating ratio range of a continuously variable transmission (CVT) 10 which transfers drive between the vehicle's driveline 8 and a flywheel 9 is effectively extended by the use of an integrated starter-generator (ISG) 13 connected to the flywheel shaft 12. When there is a high mismatch of rotational speed between the propshaft 8 and the flywheel shaft 12, prior to connecting the two shafts by a clutch 11, the ISG 13 either spins up or decelerates the flywheel 9 until its speed is brought within the optimum operating range of the CVT 10. This measure reduces wear and tear on the clutch 11.

Abstract: A control unit 13 moves an engine throttle 15 to the wide open position whenever the driver wishes to decelerate. This maximizes the transfer of rotational energy from the vehicle wheels 6 to a flywheel 12 which is coupled to a drivetrain 7,8,9 because pumping losses in the engine 2 are much reduced due to the open throttle. The energy stored in the flywheel 12 can be used at a later time to supplement the engine's motive power. The control unit 13 also controls an electro hydraulic clutch 11 which couples and decouples the flywheel to and from the drivetrain through a continuous variable transmission (CVT) 10. The gear ratio of the CVT 10 is set by the ECU 13.

Abstract: A hybrid vehicle 1 incorporates a drivetrain having a flywheel-based energy storage and recovery system 10 which can drive or be driven by the input shaft 4 of an automatic manual shift gearbox 5. The arrangement minimises vehicle driveline lash and provides a large number of operating modes.

Abstract: A control unit 13 moves an engine throttle 15 to the wide open position whenever the driver wishes to decelerate. This maximizes the transfer of rotational energy from the vehicle wheels 6 to a flywheel 12 which is coupled to a drivetrain 7,8,9 because pumping losses in the engine 2 are much reduced due to the open throttle. The energy stored in the flywheel 12 can be used at a later time to supplement the engine's motive power. The control unit 13 also controls an electro hydraulic clutch 11 which couples and decouples the flywheel to and from the drivetrain through a continuous variable transmission (CVT) 10. The gear ratio of the CVT 10 is set by the ECU 13.

Abstract: In an energy storage and recovery system suitable for a hybrid vehicle 1 and incorporating a flywheel 9, parasitic losses are minimised, thereby permitting a rotating flywheel to retain energy for a longer period of time. The flywheel is driven via an epicyclic gearset 13. An electro-hydraulic clutch 14 serves to decouple the annulus gear 21 so that it does not transmit any torque under certain vehicle operating conditions.

Abstract: In an energy storage and recovery system for a hybrid vehicle 1, the operating ratio range of a continuously variable transmission (CVT) 10 which transfers drive between the vehicle's driveline 8 and a flywheel 9 is effectively extended by the use of an integrated starter-generator (ISG) 13 connected to the flywheel shaft 12. When there is a high mismatch of rotational speed between the propshaft 8 and the flywheel shaft 12, prior to connecting the two shafts by a clutch 11, the ISG 13 either spins up or decelerates the flywheel 9 until its speed is brought within the optimum operating range of the CVT 10. This measure reduces wear and tear on the clutch 11.