Control apparatus and control method for an engine powertrain of a vehicle
US6063004A · kind A · utility
17Cited by
6References
10Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Dec 1, 1997 |
| Grant date | May 16, 2000 |
| Priority date | — |
| Expiry date | Dec 1, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H59/14
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.