| 摘要 |
PROBLEM TO BE SOLVED: To forcibly perform down-shift on a continuously variable transmission when making a transition from hybrid travel regeneration to electric travel regeneration due to disengagement of a clutch, and thereafter initiate reacceleration at a low-side gear ratio.SOLUTION: An engine is subjected to fuel cut when a vehicle transitions to coasting travel at t0 while travelling in hybrid HEV mode with a clutch CL engaged. When braking is performed at t1, a condition for regenerative braking is met so that HEV regeneration is initiated. The HEV regeneration is continued until t2 when an HEV regeneration time that is a time during which a brake switch is turned on beginning at t1 reaches a set timeΔTs. At t2, the clutch CL is disengaged, and the engine is stopped with fuel recovery inhibited, whereby the mode is switched from the HEV travel to electric travel (EV travel). A continuously variable transmission is forcibly subjected to down-shift at a speed dependent on a requested deceleration Ga during the timeΔTs. At t2, a low-side gear ratio lower byΔi1,Δi2, orΔi3 than a normal gear ratio is attained. |
