Vehicle transmission shift control apparatus
US4274306A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 16, 1979 |
| Grant date | Jun 23, 1981 |
| Priority date | — |
| Expiry date | May 16, 1999 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2063/426
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
For generating a transmission shift control command in accordance with the operating conditions of a vehicle engine, from the point of view of improving fuel economy of the engine, a transmission shift control device has a throttle sensor which detects the throttle opening to produce a throttle signal, an engine speed sensor which detects the engine speed to produce an engine speed signal, a throttle comparator which compares the throttle signal with a reference signal, an engine speed comparator which compares the engine speed signal with a reference signal, and a switching circuit which generates an upshift command or a downshift command on the basis of signals from these comparators, these commands being sent to the transmission of the vehicle, or to a display visible to the driver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.