Abstract: In an electric power supply control apparatus for a motor in a hybrid vehicle or an electric vehicle, when a main relay is switched over from an on-state to an off-state, only one of its positive-side switch and negative-side switch is turned off to provide a one-side off-state. Thus the numbers of operations of its switches are reduced in comparison to a system, in which both switches are turned off. When a charging relay is switched over from an on-state to an off-state, only one of a positive-side switch and a negative-side switch is turned off to provide a one-side off-state. Thus the numbers of operations of its switches are also reduced.

Abstract: After turning a main relay to a full off-state and turning a charger relay to a full off-state or a half off-state only one of a positive-side switch and a negative-side switch is turned of voltage application processing is performed to control a bidirectional DC-DC converter to apply an output voltage of an accessory battery to a power cable after boosting. After the voltage application processing, check processing is performed to check whether a short-circuit is present in the charger relay by comparing a terminal voltage of a first capacitor and a terminal voltage of a second capacitor. After the check processing, discharge processing is performed to control the DC-DC converter to discharge at least the first capacitor.

Abstract: After turning a main relay to a full off-state and turning a charger relay to a full off-state or a half off-state only one of a positive-side switch and a negative-side switch is turned of voltage application processing is performed to control a bidirectional DC-DC converter to apply an output voltage of an accessory battery to a power cable after boosting. After the voltage application processing, check processing is performed to check whether a short-circuit is present in the charger relay by comparing a terminal voltage of a first capacitor and a terminal voltage of a second capacitor. After the check processing, discharge processing is performed to control the DC-DC converter to discharge at least the first capacitor.

Abstract: In an electric power supply control apparatus for a motor in a hybrid vehicle or an electric vehicle, when a main relay is switched over from an on-state to an off-state, only one of its positive-side switch and negative-side switch is turned off to provide a one-side off-state. Thus the numbers of operations of its switches are reduced in comparison to a system, in which both switches are turned off. When a charging relay is switched over from an on-state to an off-state, only one of a positive-side switch and a negative-side switch is turned off to provide a one-side off-state. Thus the numbers of operations of its switches are also reduced.

Abstract: The present invention has an object of providing a technology capable of stopping and starting an internal combustion engine more preferably by restraining vibrations when the internal combustion engine stops and a scatter in crank angle when the internal combustion engine stops. For a period till an actual stop of the internal combustion engine since a stopping condition of the internal combustion engine was established, an air quantity of air flowing into a cylinder of the internal combustion engine is decreased when a number of revolutions of the engine is higher than a specified number of revolutions (S102) and is increased when the number of revolutions of the engine is equal to or lower than the specified number of revolutions (S106).

Abstract: The present invention has an object of providing a technology capable of stopping and starting an internal combustion engine more preferably by restraining vibrations when the internal combustion engine stops and a scatter in crank angle when the internal combustion engine stops. For a period till an actual stop of the internal combustion engine since a stopping condition of the internal combustion engine was established, an air quantity of air flowing into a cylinder of the internal combustion engine is decreased when a number of revolutions of the engine is higher than a specified number of revolutions (S102) and is increased when the number of revolutions of the engine is equal to or lower than the specified number of revolutions (S106).

Abstract: A gas-sparing vehicle is achieved by a control system for a hybrid vehicle equipped at least with: a hybrid engine which includes at least a first rotary electric unit for deciding the rpm of the engine and a second rotary electric unit for deciding the driving force of the vehicle and which has power converting means connected to the output shaft of the engine; and electricity storing means. In one embodiment, a hybrid controller 16 controls the drive of a first rotary electric unit 2000 according to a startup torque command value which is decided based on the rpm of an engine at the time of engine startup and which decreases as the rpm increases; it also determines that the complete explosion in an engine 1 has occurred when the startup torque command value falls below a predetermined complete explosion judgment value.