Mitsubishi Fuso Truck & Bus Corporation

Yusuke Horii

Satoshi Hiranuma

Yoshinaka Takeda

Hiroaki Fujita

Minehiro Murata

An ammonia selective reduction-type NOx catalyst () is interposed in an exhaust passage of an engine () provided in a series-type hybrid electric vehicle (), and a urea water injector () is disposed in the exhaust passage to supply a urea water into exhaust gas existing upstream of the ammonia selective reduction-type NOx catalyst (). The engine () is started and stopped in accordance with the storage state of a battery (), and the urea water injector () is controlled in accordance with the operating state of the engine (). When the engine () is to be stopped, an adsorption increasing operation for increasing the amount of ammonia adsorbed by the ammonia selective reduction-type NOx catalyst () is executed over a predetermined period before the engine () is stopped.

Exhaust purification device for hybrid electric vehicle

A voltage converting circuit for electric vehicles that is capable of stably performing precharge control from a high voltage battery to an inverter. The voltage converting circuit includes a high voltage battery for supplying electric power to a vehicle drive motor; and an inverter, which is interposed between the high voltage battery and the vehicle drive motor and has a capacitor, for converting a direct current, supplied from the high voltage battery, to an alternating current and supplying to the vehicle drive motor. The voltage converting circuit further includes a voltage converter, connected to the high voltage battery in parallel with the inverter, for converting a voltage of the high voltage battery to a low voltage and outputting the low voltage; a contactor circuit, interposed between the high voltage battery and the inverter, for performing a process of suppressing rush current relative to the inverter when supplying electric power of the high voltage battery to the vehicle drive motor; and voltage a converter start-up enabling units and for enabling start-up of the voltage converter when a conclusion of the suppression process performed by the contactor circuit is sensed.

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Kawasaki, Japan

Yusuke Horii