Electrically assisted vehicle

Details Electrically assisted vehicle Electrically assisted vehicle

1996-10-31

1999-01-19

Hurley, Kevin

Motor vehicles

Special wheel base

Rider propulsion with additional source of power, e.g.,...

180220, B62K 1100

Patent

active

058604871

ABSTRACT:
An electrically assisted vehicle includes a vehicle main body having a driving wheel, a human drive system having a driving force applying part to which a human driving force for driving the driving wheel is applied and a torque detecting part for detecting the human driving force applied to the driving force applying part, and an electric drive system having a motor, a control part for controlling the motor and a battery for power supply, wherein the motor has an electric driving force characteristic such that it outputs the electric driving force only at speeds lower than a predetermined speed, and the control part of the electric drive system controls the motor with a predetermined ratio on the basis of detection results from the torque detecting part of the human drive systems thereby executing power assistance control while maintaining the assist ratio to be less than a predetermined value without providing a speed sensor for carrying out control based on the speed.

REFERENCES:
patent: 4221275 (1980-09-01), Pennebaker et al.
patent: 5024286 (1991-06-01), Lean et al.
patent: 5370200 (1994-12-01), Takata
patent: 5375676 (1994-12-01), Takata et al.
patent: 5474148 (1995-12-01), Takata
patent: 5505277 (1996-04-01), Suganuma et al.

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