초록 ▼

A turbocharger drive system associated with an internal combustion engine includes a plurality of turbochargers drivable by exhaust gases from the engine, a plurality or rotary electric machines mounted on the rotatable shafts, respectively, of the turbochargers and operable as electric motors or ge

A turbocharger drive system associated with an internal combustion engine includes a plurality of turbochargers drivable by exhaust gases from the engine, a plurality or rotary electric machines mounted on the rotatable shafts, respectively, of the turbochargers and operable as electric motors or generators, and a single rotary electric machine coupled to the rotatable shaft of the engine. When the engine rotates at a low speed and under a high load, the rotary electric machine coupled to the engine shaft operates as an electric generator to generate electric power to drive the rotary electric machines mounted on the turbocharger shafts as electric motors, so that the boost pressure is increased to increase the output power of the engine. As the temperature in the combustion chambers rises because of the increased output power of the engine, the timing for supplying fuel into the combustion chambers is delayed to normalize the timing to start burning fuel, which would otherwise be advanced.

대표청구항 ▼

A turbocharger drive system combined with an internal combustion engine, comprising: a turbocharger assembly having a rotatable shaft; a first rotary electric machine mounted on said rotatable shaft; means for detecting a load on the internal combustion engine; means for detecting a rotational speed

A turbocharger drive system combined with an internal combustion engine, comprising: a turbocharger assembly having a rotatable shaft; a first rotary electric machine mounted on said rotatable shaft; means for detecting a load on the internal combustion engine; means for detecting a rotational speed of the internal combustion engine; means for supplying fuel to the internal combustion engine; a second rotary electric machine operatively coupled to an output shaft of the internal combustion engine; means for driving said first rotary electric machine as an electric motor when it is determined from signals from said means for detecting the load and said means for detecting the rotational speed that the internal combustion engine rotates at a low speed and under a high load; means for operating said second rotary electric machine as an electric generator; means for supplying electric power generated by said electric generator to said electric motor; and means for delaying a timing to supply fuel from said fuel supplying means to the internal combustion engine when at least one of an increase in the load and a reduction in the rotational speed is detected by said means for detecting the load and said means for detecting the rotational speed.