INTERNAL-COMBUSTION-ENGINE CONTROL APPARATUS
First Claim
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1. An internal-combustion-engine control apparatus comprising:
- an electrically assisted turbocharger including;
a turbine wheel that is provided in an exhaust path of an internal combustion engine mounted in a vehicle and is driven with exhaust gas energy of the internal combustion engine;
a compressor impeller that is provided in an air-intake path of the internal combustion engine and is driven by the turbine wheel so as to compress the air in the air-intake path; and
a motor that exerts assisting torque on the compressor impeller, as may be necessary, anda control means that controls the electrically assisted turbocharger, based at least on an acceleration intention of a driver who drives the vehicle,wherein output torque of the internal combustion engine is increased by supercharging the internal combustion engine with air compressed by the compressor impeller; and
when the acceleration intention is to require acceleration that is more rapid than a predetermined value, the control means controls the motor in such a way that the motor generates assisting torque for compensating inertia moments of at least the turbine wheel, the compressor impeller, and the motor.
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Abstract
An electrically assisted turbocharger is provided; in the case where an internal combustion engine rotates at low rotation speed, the output thereof is secured by adjusting the flow rate in a recirculation path while supercharging with electrically assisting torque, and in the case where the internal combustion engine rotates at high rotation speed, electrically assisting torque compensates the inertia of at least a turbine wheel, a compressor impeller, and a motor; as a result, not only unnecessary consumption of electric energy is avoided, but also desired supercharging can be performed by the electrically assisted turbocharger.
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Citations
11 Claims
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1. An internal-combustion-engine control apparatus comprising:
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an electrically assisted turbocharger including; a turbine wheel that is provided in an exhaust path of an internal combustion engine mounted in a vehicle and is driven with exhaust gas energy of the internal combustion engine; a compressor impeller that is provided in an air-intake path of the internal combustion engine and is driven by the turbine wheel so as to compress the air in the air-intake path; and a motor that exerts assisting torque on the compressor impeller, as may be necessary, and a control means that controls the electrically assisted turbocharger, based at least on an acceleration intention of a driver who drives the vehicle, wherein output torque of the internal combustion engine is increased by supercharging the internal combustion engine with air compressed by the compressor impeller; and
when the acceleration intention is to require acceleration that is more rapid than a predetermined value, the control means controls the motor in such a way that the motor generates assisting torque for compensating inertia moments of at least the turbine wheel, the compressor impeller, and the motor. - View Dependent Claims (2, 3, 4)
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5. An internal-combustion-engine control apparatus comprising:
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an electrically assisted turbocharger including; a turbine wheel that is provided in an exhaust path of an internal combustion engine mounted in a vehicle and is driven with exhaust gas energy of the internal combustion engine; a compressor impeller that is provided in an air-intake path of the internal combustion engine and is driven by the turbine wheel so as to compress the air in the air-intake path; and a motor that exerts assisting torque on the compressor impeller, as may be necessary, and a control means that controls the electrically assisted turbocharger, based at least on an acceleration intention of a driver who drives the vehicle and a rotation speed of the internal combustion engine, wherein output torque of the internal combustion engine is increased by supercharging the internal combustion engine with air compressed by the compressor impeller; and
in the case where the acceleration intention is not to require acceleration that is more rapid than a predetermined value and the rotation speed is the same as or lower than a predetermined rotation speed, the control means controls the motor in such a way that the motor drives the compressor impeller with assisting torque thereof, and in the case where the acceleration intention is not to require acceleration that is more rapid than the predetermined value and the rotation speed is higher than the predetermined rotation speed, the control means de-energizes the motor so that the compressor impeller is driven only with torque of the turbine wheel. - View Dependent Claims (6, 7, 8)
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9. An internal-combustion-engine control apparatus comprising:
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an electrically assisted turbocharger including; a turbine wheel that is provided in an exhaust path of an internal combustion engine mounted in a vehicle and is driven with exhaust gas energy of the internal combustion engine; a compressor impeller that is provided in an air-intake path of the internal combustion engine and is driven by the turbine wheel so as to compress the air in the air-intake path; and a motor that exerts assisting torque on the compressor impeller, as may be necessary, and a control means that controls the electrically assisted turbocharger, based at least on a rotation speed of the internal combustion engine, wherein output torque of the internal combustion engine is increased by supercharging the internal combustion engine with air compressed by the compressor impeller; and
when the output torque of the internal combustion engine is increased at a more higher rotation speed than a predetermined rotation speed of the internal combustion engine, the control means controls the motor in such a way that the motor generates assisting torque for compensating inertia moments of at least the turbine wheel, the compressor impeller, and the motor. - View Dependent Claims (10, 11)
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Specification