초록 ▼

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

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.

대표청구항 ▼

In drive apparatus having gearing (10) having a plurality of gear ratios, an engine (11) for driving said gearing, energy supply means (12) connected to said engine for supplying energy thereto in accordance with an energy control signal, externally operable energy control signal furnishing means (1

In drive apparatus having gearing (10) having a plurality of gear ratios, an engine (11) for driving said gearing, energy supply means (12) connected to said engine for supplying energy thereto in accordance with an energy control signal, externally operable energy control signal furnishing means (14) for furnishing said energy control signal to said energy supply means, and gear control means (16) for furnishing a shift initiate signal for initiating a gear shift under predetermined operating conditions, a system for synchronizing said engine to said gearing during a so-initiated gear shift from a present gear to a next subsequent gear, comprising regulator means (15) for furnishing an energy control signal adapted to change the speed of said engine from a present speed corresponding to said present gear to a desired speed corresponding to said next subsequent gear; and switch means (13) connected between said energy control signal furnishing means, said regulator means and said energy supply means, for disconnecting said energy supply means from said energy control signal furnishing means and connecting said energy supply means to said regulator means during said so-initiated gear shift.