Patent · US Expired

Apparatus for synchronizing the driving and driven members during gear shift operations

US4200007A · kind A · utility

26Cited by

4References

8Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Helmut Espenschied · Ludwigsburg, DE
Uwe Kiencke · Ludwigsburg, DE
Alfred Schulz · Oberriexingen, DE

Key dates

Filing date	Aug 9, 1978
Grant date	Apr 29, 1980
Priority date	—
Expiry date	Aug 9, 1998

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16H63/502
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

During gear shift, the fuel control for the engine is switched from the gas pedal to a regulator which regulates it such that the speed of the engine is changed from the speed corresponding to the then-present gear to the speed for the next subsequent gear at a predetermined rate of change of speed with respect to time. A different rate of change of speed may be provided for upshift and downshift operations. A comparator compares the engine speed to the output speed of the gearing and furnishes a shift terminate signal signifying synchronism between the two speeds when the two speeds have a predetermined relationship. A first and second offset signal may be applied to the comparator to allow the engine speed to be somewhat less than the output speed of the gear, and vice a versa, during downshift and upshift respectively.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.