Synchronized coast downshift control for hybrid vehicles
First Claim
1. A drive control system for a hybrid vehicle, in which an electric motor and an internal combustion engine are coupled to the input side of a transmission capable of at least one gear stage for applying a one-way clutch, comprising:
- coasting state detecting means for detecting a coasting state in which said one-way clutch is released in a deceleration state set with said gear stage; and
input speed raising means for driving said electric motor when said coasting state is detected, so that the input speed of said transmission may approach the synchronous speed which is the product of the gear ratio of the gear stage to be set by applying said one-way dutch and the output speed of said transmission.
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Accused Products
Abstract
A drive control system for a hybrid vehicle for preventing a delay in the application of a one-way clutch in a transmission and an application shock. In this drive control system, an electric motor and an internal combustion engine are coupled to the input side of a transmission having at least one gear stage to be set by applying a one-way clutch. The drive control system comprises: a detector for detecting a coasting state in which the one-way clutch is released in a deceleration state set with the gear stage; and an input speed raising device for driving the electric motor when the coasting state is detected, so that the input speed of the transmission may approach the synchronous speed which is the product of the gear ratio of the gear stage to be set by applying the one-way clutch and the output speed of the transmission.
107 Citations
8 Claims
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1. A drive control system for a hybrid vehicle, in which an electric motor and an internal combustion engine are coupled to the input side of a transmission capable of at least one gear stage for applying a one-way clutch, comprising:
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coasting state detecting means for detecting a coasting state in which said one-way clutch is released in a deceleration state set with said gear stage; and input speed raising means for driving said electric motor when said coasting state is detected, so that the input speed of said transmission may approach the synchronous speed which is the product of the gear ratio of the gear stage to be set by applying said one-way dutch and the output speed of said transmission. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification