Electrically driven vehicle start control device
AssigneeNissan Motor Co., Ltd.
InventorsAtsushi Tsukizaki, Masato Koga, Hiroyuki Fukuda, Ryohey Toyota
Life of this patent
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Abstract
A drive system is provided with a first motor generator as a power source, and a multistage gear transmission for changing the speed of output from the first motor generator and transmitting the output to drive wheels. The multistage gear transmission has a plurality of engagement clutches as shifting elements that are meshingly engaged upon movement from a disengaged position. This hybrid vehicle is provided with a start control device where, when a start clutch has been engaged while the vehicle is stopped, the start control device maintains the engagement of the start clutch for a duration that includes when the vehicle is stopped and until the next vehicle start.
Claims14
An electrically driven vehicle start control device for controlling a starting of an electrically driven vehicle having a drive system that includes an electric motor as a power source and a transmission that converts an output from the electric motor and transmits the output to a drive wheel, in which the transmission has a plurality of engagement clutches as shifting elements that meshingly engage by movement from a disengaged position, the plurality of engagement clutches including a start clutch that is meshingly engaged in response to a starting request to connect the electric motor and the drive wheel, the electrically driven vehicle start control device comprising:
- a starting controller programmed to maintain engagement of the start clutch, if the start clutch is engaged when the vehicle is in a stopped state, for a duration including the stopped state and until a next starting request,
- the transmission having at least one starting gear shift stage in which the start clutch is engaged, and
- upon a selection operation from a traveling range to a parking range or a neutral range while the vehicle is in the stopped state, the starting controller being further programmed to maintain the at least one starting gear shift stage until a next time that the traveling range is selected.
Dependencies are inferred from the claim text.