Hybrid vehicle drive system having a drive mode using both engine and electric motor
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United States of America Patent
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Nov 24, 1998
Issued Date -
N/A
app pub date -
Feb 24, 1997
filing date -
Feb 29, 1996
priority date (Note) -
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Abstract
A hybrid drive system for a motor vehicle, having a power drive state in which there is available a power drive mode in which an engine and an electric motor are both operated as a drive power source for driving the vehicle, and wherein a manually operated power drive selector is provided for selecting the power drive mode, and a power drive restricting device is provided to inhibit the vehicle from being driven in the power drive state and therefore in the power drive mode if the power drive selector is not manually operated. The hybrid drive system may have an engine assist drive mode in which the electric motor is operated as an auxiliary drive power source, together with the engine operated as a primary drive power source, according to a selected one of different drivability modes of the vehicle selected by a manually operated drivability performance selector.
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