Vehicle and control method therefor
AssigneeToyota Jidosha Kabushiki Kaisha
InventorKen Akuzawa
Life of this patent
Estimating the term…
Abstract
A first electric power generation device configured to produce an accessory voltage according to a first instruction voltage. A second electric power generation device configured to produce the accessory voltage according to a second instruction. An electric control unit is configured to execute crank position stop control for stopping a crank of the engine at a target position when the engine is stopped by controlling the first electric power generation device such that a current is circulated in the first electric power generation device and the rotating electric machine generates braking torque. The electric control unit is configured to execute the crank position stop control in a state in which the second instruction voltage is equal to or higher than the first instruction voltage.
Claims7
A vehicle comprising:
- an engine;
- a first electric power generation device including a rotating electric machine connected to a crankshaft of the engine, the first electric power generation device being configured to produce an accessory voltage according to a first instruction voltage, using torque that the rotating electric machine receives from the crankshaft;
- a second electric power generation device configured to produce the accessory voltage according to a second instruction voltage using a voltage source different from the rotating electric machine without using the torque of the crankshaft;
- and
- an electric control unit configured to execute crank position stop control for stopping the crankshaft of the engine at a target position when the engine is stopped by controlling the first electric power generation device such that a current is circulated in the first electric power generation device and the rotating electric machine generates braking torque,
- wherein the electric control unit is configured to execute the crank position stop control in a state in which the second instruction voltage is equal to or higher than the first instruction voltage.
A control method for a vehicle,
- the vehicle including an engine, a first electric power generation device including a rotating electric machine connected to a crankshaft of the engine, the first electric power generation device being configured to produce an accessory voltage according to a first instruction voltage, using torque that the rotating electric machine receives from the crankshaft, a second electric power generation device configured to produce the accessory voltage according to a second instruction voltage using a voltage source different from the rotating electric machine without using the torque of the crankshaft, and an electronic control unit,
- the control method comprising:
- when the engine is stopped, determining, by the electronic control unit, whether or not the second instruction voltage is equal to or higher than the first instruction voltage;
- and
- when the electronic control unit determines that the second instruction voltage is equal to or higher than the first instruction voltage, executing, by the electronic control unit, crank position stop control for stopping a crank of the engine at a target position when the engine is stopped by controlling the first electric power generation device such that a current is circulated in the first electric power generation device and the rotating electric machine generates braking torque.
Dependencies are inferred from the claim text.