Control apparatus and control method for an engine powertrain of

Details Control apparatus and control method for an engine powertrain of Control apparatus and control method for an engine powertrain of

1997-12-01

2000-05-16

Ta, Khoi Q.

Interrelated power delivery controls, including engine control

Transmission control

Continuously variable friction transmission

477 40, F16H 5900

Patent

active

060630043

ABSTRACT:
A control apparatus and control method for an engine powertrain of a vehicle including a CVT type automatic transmission and a lean burn engine. The control apparatus is designed to compute an engine torque in a stoichiometric area or a lean burn area, calculate an output torque from a present transmission ratio and a present torque ratio, calculate a transmission ratio change so that the output torque approximates a target torque, and vary the transmission ratio. With this configuration, shock due to steps in the output torque can be prevented to obtain a comfortable acceleration feeling.

REFERENCES:
patent: 4616621 (1986-10-01), Kuroiwa et al.
patent: 4718306 (1988-01-01), Shigematsu et al.
patent: 4771752 (1988-09-01), Nishimura et al.
patent: 4852429 (1989-08-01), Kumzer et al.
patent: 5213012 (1993-05-01), Suzuki
patent: 5803862 (1998-09-01), Ochiai et al.

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