Drive state shift control apparatus for hybrid vehicle
First Claim
1. A drive state shift control apparatus for a hybrid vehicle, the hybrid vehicle including an engine and a motor-generator switchable between an electric drive mode and a hybrid drive mode during a mode shift and a transmission switchable between a plurality of gear shift positions during a gear shift, the apparatus comprising:
- means for receiving a request for a mode shift and a request for a gear shift;
means for receiving vehicle information including at least one of a vehicle speed and an engine load; and
means for determining a time for commencing performance of the gear shift and a time for commencing performance of the mode shift based upon a comparison of vehicle information to a threshold when the receiving means receives the request for the mode shift and the request for the gear shift at or substantially at a same time before commencing performance of both the mode shift and gear shift in response to their respective requests; and
means for performing the mode shift between the electric drive mode and the hybrid drive mode and the gear shift.
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Accused Products
Abstract
A drive state shift control apparatus for a hybrid vehicle and a control method for a hybrid vehicle smoothly perform a shift in drive state in accordance with an operating state by a mode shift and a gear shift. When an accelerator operation causes a mode shift request and a gear shift request at substantially the same time, vehicle information including at least one of the vehicle speed and the engine load is used to determine the sequence of the shifts based on the competing interests of shock control and responsiveness.
35 Citations
23 Claims
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1. A drive state shift control apparatus for a hybrid vehicle, the hybrid vehicle including an engine and a motor-generator switchable between an electric drive mode and a hybrid drive mode during a mode shift and a transmission switchable between a plurality of gear shift positions during a gear shift, the apparatus comprising:
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means for receiving a request for a mode shift and a request for a gear shift; means for receiving vehicle information including at least one of a vehicle speed and an engine load; and means for determining a time for commencing performance of the gear shift and a time for commencing performance of the mode shift based upon a comparison of vehicle information to a threshold when the receiving means receives the request for the mode shift and the request for the gear shift at or substantially at a same time before commencing performance of both the mode shift and gear shift in response to their respective requests; and means for performing the mode shift between the electric drive mode and the hybrid drive mode and the gear shift.
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2. A drive state shift control apparatus for a hybrid vehicle, comprising:
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an engine; a motor-generator; a first clutch disposed between the engine and the motor-generator for engagement and disengagement; a second clutch disposed between the motor generator and a driving wheel for engagement and disengagement; a transmission disposed between the motor generator and the driving wheel; and a controller operable to; selectively provide a mode shift between an electric drive mode in which the first clutch is disengaged and the second clutch is engaged and a hybrid drive mode in which the first clutch and the second clutch are engaged; selectively provide a gear shift in the transmission; receive a request for a mode shift and a request for a gear shift before commencing performance of a mode shift in response to the request for the mode shift and before commencing performance of a gear shift in response to the request for the gear shift, determine a time for commencing performance of the gear shift and a time for commencing performance of the mode shift, after receiving the respective requests, based upon a comparison of vehicle information that is related to at least one of a vehicle speed and an engine load to a threshold; and perform the mode shift at the time for commencing performance of the mode shift and perform the gear shift at the time for commencing performance of the gear shift. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A drive state shift control method for a hybrid vehicle, the hybrid vehicle including an engine and a motor-generator switchable between an electric drive mode and a hybrid drive mode during a mode shift and a transmission switchable between a plurality of gear shift positions during a gear shift, the method comprising:
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receiving a request for a mode shift and a request for a gear shift in and before commencing performance of the mode shift in response to the request for the mode shift and before commencing performance of the gear shift in response to the request for the gear shift; receiving vehicle information that is related to at least one of a vehicle speed and an engine load; and performing the mode shift between the electric drive mode and the hybrid drive mode and the gear shift in a sequence based on a comparison of the vehicle information to a threshold after receiving the requests. - View Dependent Claims (19, 20, 21, 22, 23)
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Specification