Electric hybrid vehicle
AssigneeNissan Motor Co., Ltd.
InventorShinichiro Kitada
Life of this patent
Estimating the term…
Abstract
An electric hybrid vehicle has an engine for driving a generator to supply electric power to a vehicle driving motor. The engine with a catalytic converter is operated when a charged condition of a battery for mainly supplying electric power to the motor is low. The engine is controlled to suppress the amount of intake air by controlling an air control valve for a predetermined time after starting of the engine. The amount of the intake air is then gradually increased until the engine generates a rating output. Therefore, the emission characteristics of the catalytic converter is largely improved.
Claims15
An electric hybrid vehicle comprising:
- a motor for driving a vehicle body of the electric hybrid vehicle;
- a battery for an electric source of said motor, said battery being repeatingly rechargeable;
- a generator connected to said battery;
- an engine connected to said generator and connected to a catalytic converter for purifying exhaust gas from said engine, said engine being operated in a normal condition such that said generator outputs a rated output;
- means for controlling the amount of intake air to said engine;
- and
- means for suppressing the amount of the intake air at a predetermined small flow rate by means of said intake air amount controlling means for a desired time after starting of said engine.
An engine system for driving a generator applied to an electric vehicle, said engine system comprising:
- an internal combustion engine intermittently operating for generating electric power by operation of the generator and connected to an intake system and an exhaust system;
- an intake air control valve connected to the intake system;
- and
- an intake air control valve controller controlling said intake air control valve so as to suppress the intake air amount at a predetermined small flow rate for a predetermined time after starting of said engine.
An electric hybrid vehicle comprising:
- a motor for driving a vehicle body of the electric hybrid vehicle;
- a rechargeable battery for an electric source of said motor;
- a generator connected to said battery;
- an engine connected to said generator and operated in a normal condition for outputting a rated output;
- said engine further connected to a catalytic converter purifying exhaust gas from said engine;
- means for controlling an amount of intake air to said engine;
- and
- means for causing said intake air amount controlling means to reduce the amount of intake air to a predetermined flow rate, lower than a rate for outputting said rated output, for a predetermined suppressing time period substantially immediately following starting of said engine.
Dependencies are inferred from the claim text.