| 摘要 |
A hybrid control device calculates engine rotational speed and engine torque based on cooling water temperature for an engine and a charging state of a main battery. The hybrid control device operates the engine in a maximum charging efficiency mode, when the cooling water temperature is lower than a target temperature value and the main battery has a remaining charging capacity. In the maximum charging efficiency mode, the hybrid control device calculates such engine rotational speed and engine torque, which realize engine operation according to which a fuel consumption amount for a unit amount of charging electric power is minimized. As a result, efficiency of a vehicle control system is improved as a whole, to thereby improve fuel consumption ratio. |
| 主权项 |
1. A vehicle control system for a hybrid vehicle comprising:
an engine configured to produce a driving force for the hybrid vehicle, wherein the hybrid vehicle runs at least with the driving force of the engine in a non-electric-vehicle running mode; a motor-generator configured to generate electric power when the motor-generator is driven to rotate by the engine, wherein the hybrid vehicle runs only with the electric power of the motor-generator in an electric-vehicle running mode; an electric-power charging device connected to the motor-generator configured to charged the electric power generated at the motor-generator and configured to supply the electric power to an electric load of an accessory device mounted to the hybrid vehicle; and a control device for controlling an operation of the engine, wherein the control device includes a processor for executing a control program, the control device being at least configured to:
obtain information of cooling water temperature, which is temperature of cooling water for the engine;obtain information of a charging state of the electric-power charging device; andcalculate an engine operating point including engine rotational speed and engine torque, wherein the engine operates in a first operating mode when the cooling water temperature is lower than a predetermined temperature and the charging state of the electric-power charging device has a remaining charging capacity, during a period in which the hybrid vehicle runs in the non-electric-vehicle running mode, in the first operating mode, the engine rotational speed and engine torque are calculated based on the charging state of the electric-power charging device, which realize such engine operation according to which a fuel consumption amount for a unit amount of electric power to be charged into the electric-power charging device is minimized, the engine operates in a second operating mode when the cooling water temperature is lower than the predetermined temperature and the charging state of the electric-power charging device has no remaining charging capacity, during the period in which the hybrid vehicle runs in the non-electric-vehicle running mode, and in the second operating mode, the engine rotational speed and engine torque, which realize such engine operation according to which minimum electric power is generated by the motor-generator, are calculated, wherein the minimum electric power satisfies at least electric power to be consumed by the electric load of the accessory device mounted to the hybrid vehicle. |
