Patent ID: 6772732
Filing Date: 2004-08-10
Classification: B60K,F02D

Abstract:
A manual throttling system for electronically controlling the speed (RPM) of an engine, comprising:a housing; a dial plate having first and second sides, a center, a multiplicity of openings each spaced a selected radial distance from a center of the dial plate and being connected to the housing; a control knob connected to the housing and to the dial plate at said dial plate center, said dial plate and control knob being rotatable relative to the housing and said dial plate being rotatable in response to rotation of the control knob; a light source connected to the housing and being positioned on the first side of the dial plate adjacent the dial plate openings; a detector connected to the housing and being positioned adjacent the second side of the dial plate and being adapted to receive light pulses passing from the light source through the dial plate openings and delivering signals (A) and (B) responsive respectfully to the speed and direction of dial plate rotation and frequency of the light pulses; and a microprocessor connected to the detector and being adapted to receive signals (A) and (B) and deliver an engine speed controlling signal (C) responsive to the direction and speed of dial plate rotation and the frequency of light pulses.