| US 7,434,385 B2 | ||
| Device for restraining the deterioration of a catalytic apparatus of an internal combustion engine | ||
| Kazuhiro Ichimoto, Nissin (Japan); and Kouichi Oosawa, Susono (Japan) | ||
| Assigned to Toyota Jidosha Kabushiki Kaisha, Toyota (Japan) | ||
| Appl. No. 10/555,409 PCT Filed May 18, 2004, PCT No. PCT/JP2004/007035 § 371(c)(1), (2), (4) Date Nov. 03, 2005, PCT Pub. No. WO2004/101979, PCT Pub. Date Nov. 25, 2004. |
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| Claims priority of application No. 2003-140756 (JP), filed on May 19, 2003. | ||
| Prior Publication US 2006/0117739 A1, Jun. 08, 2006 | ||
| Int. Cl. F01N 3/00 (2006.01) | ||
| U.S. Cl. 60—277 [60/285] | 7 Claims |
| 1. A device for restraining the deterioration of a catalytic apparatus of an internal combustion engine, wherein
when a temperature of the catalytic apparatus arranged in the engine exhaust system is higher than a predetermined temperature
in a vehicle deceleration, a fuel-cut of the engine is prohibited and a first motor-generator connected with a vehicle drive
shaft is operated as a generator that charges an electricity accumulator, and
when an amount of charge in the electricity accumulator reaches a predetermined value, the operation of the first motor-generator,
as a generator, is stopped and a fuel-cut starts in the engine.
|