초록 ▼

An engine is activated to drive a generator when an electrical output is required. The required electrical output (PO) is searched and the necessary engine output is calculated. The basic driving point (NO, TO) which obtains maximum fuel efficiency is set at that output (S101-S105). The load of the

An engine is activated to drive a generator when an electrical output is required. The required electrical output (PO) is searched and the necessary engine output is calculated. The basic driving point (NO, TO) which obtains maximum fuel efficiency is set at that output (S101-S105). The load of the generator is controlled so as to reach the set basic driving point. When the catalyst temperature is lower than a set value, while maintaining the required electrical output, the basic driving point is varied to a driving point (Ncold, Tcold) which will raise the exhaust gas temperature (S106-108). Furthermore when the temperature of the peripheral engine components in the engine room is higher than a set value, while maintaining the required electrical output, the driving point is varied to a driving point (Nheat, Theat) which will lower the exhaust gas temperature (S109-S111). Hence while maintaining the electrical output, it is possible satisfy each component temperature condition. Therefore while maintaining drivability, fuel efficiency performance, lowering exhaust gas emissions and component deterioration can suppressed.

대표청구항 ▼

1. A generator control device for a hybrid automobile which includes an electrical motor used to drive the automobile, a battery which supplies electricity to said electrical motor, a generator which supplies electricity to said electrical motor and to said battery, an exhaust gas purification catal

1. A generator control device for a hybrid automobile which includes an electrical motor used to drive the automobile, a battery which supplies electricity to said electrical motor, a generator which supplies electricity to said electrical motor and to said battery, an exhaust gas purification catalyst disposed in an exhaust passage, and an engine which drives said generator, the generator control device comprising:a controller which controls output of the engine at least when a charge of the battery falls below a set value so that the generator is driven and an amount of electrical output meets a required electrical output wherein said controller includes a microcomputer and is programmed to: maintain an engine output which is equal to an engine output at a basic driving point when a temperature of the catalyst is lower than a set temperature, said basic driving point is a point of optimal efficiency of the engine, and vary a rotation speed of said engine and a torque of said engine as to raise the temperature of the catalyst when the temperature of the catalyst is lower than said set temperature, while maintaining a constant engine output by an increase of the engine rotation speed and a decrease of the engine load, so the temperature of the catalyst is raised.