ENGINE SYSTEM AND CONTROL METHOD FOR ENGINE SYSTEM

摘要

An engine system is constituted of a battery, a fuel cell, a turbocharger, an engine, a controller configured to (i) stop the engine automatically upon fulfillment of a predetermined stop condition and starts the engine automatically upon fulfillment of a predetermined restoration condition. In the engine system, the controller is configured to stop the fuel cell from charging the battery or limit a charge amount of the battery to a value equal to or smaller than a discharge amount when the fuel cell is driven during operation of the engine and an SOC is equal to or larger than a first limit value W1. The controller is configured not to limit the charge amount when the internal combustion engine control unit stops the engine and the fuel cell is driven during stop of the engine.

主权项

1. An engine system comprising:
a battery; a fuel cell configured to charge the battery; a turbocharger that is supplied with exhaust gas discharged from the fuel cell; an internal combustion engine that is supplied with air from the turbocharger; and a controller configured to: (i) stop the internal combustion engine automatically upon fulfillment of a predetermined stop condition, and start the internal combustion engine automatically upon fulfillment of a predetermined restoration condition, (ii) stop the fuel cell from charging the battery or limit a charge amount of the battery to a value equal to or smaller than a discharge amount of the battery when the fuel cell is driven during operation of the internal combustion engine and a state of charge of the fuel cell is equal to or larger than a first limit value, (iii) not to limit the charge amount when the internal combustion engine is stopped by the controller and the fuel cell is driven during stop of the internal combustion engine.