US 2007/0175429 A1 · Internal combustion engine start controller

Abstract

An internal combustion engine start controller in a vehicle that includes: a power source; an internal combustion engine that is started by using electric power supplied from the power source; a first motor; and a first electric power converter that is constructed so as to be able to perform electric power conversion between the power source and the first motor through switching control of power semiconductor elements is provided. The start controller includes: a start detecting device for detecting whether the engine is in a starting operation; and a first frequency setting device that, when the engine is in a starting operation, sets a switching frequency of the first electric power converter to a frequency lower than that used when the engine is not in a starting operation.

Claims12

Dependent claims

An internal combustion engine start controller in a vehicle that includes:

a power source;
an internal combustion engine that is started by using electric power supplied from the power source;
a first motor;
and a first electric power converter that is constructed so as to be able to perform electric power conversion between the power source and the first motor through switching control of power semiconductor elements, the controller comprising:
a start detecting device for detecting whether the engine is in a starting operation;
and
a first frequency setting device that, when the engine is in a starting operation, sets a switching frequency of the first electric power converter to a frequency lower than that used when the engine is not in a starting operation.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application

11/698,077Filed 26 Jan 2007

Priority

JP 2006-02293731 Jan 2006

Published

2 Aug 2007

Term ends

Not estimatedThe source records don’t support an estimate.

Classification35 codes

F02N 11/04
Starting of engines by means of electric motors: the motors being associated with current generators
B60L 3/003
Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train: relating to inverters
B60L 15/007
Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles: physical arrangements or structures of…
B60L 15/2009
For control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed: for braking

Internal combustion engine start controller

Life of this patent

Internal combustion engine start controller

Life of this patent

Abstract

Claims12