Fuel injection control system
AssigneeYamaha Hatsudoki Kabushiki Kaisha
InventorsKazuhiro Nakamura, Yuuji Moriwaki
Life of this patent
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Abstract
An engine control system that relies upon throttle valve position and a throttle position detector. However, rather than measuring actual throttle valve detector output signals, a different signal is measured so that accurate positioning of the initial position of the throttle position detector is unnecessary.
Claims23
A control for an internal combustion engine having an engine speed control member movable between extreme positions comprising an idle speed position and a full speed position, an operator controlled member movable between an idle speed position and a full speed position and operatively connected to said engine speed control member for positioning said engine speed control member in response to operator demand, sensor means for providing a signal indicative of the position of said speed control member when said operator controlled member is in one of its extreme positions, and means for controlling said engine in response to at least the position of said engine speed control member by detecting the difference in signal from said sensor means at a given position of the speed control member and the signal at at least one of said extreme positions.
A control method for an internal combustion engine having an engine speed control member movable between extreme positions comprising an idle speed position and a full speed position, an operator controlled member movable between an idle speed position and a full speed position and operatively connected to said engine speed control member for positioning said engine speed control member in response to operator demand, sensor means for providing a signal indicative of the position of said engine in response to at least the position of said engine speed control member, said method comprising the steps of determining when the operator controlled member is in an extreme position and measuring the output signal of the sensor means, thereafter detecting the signal from the sensor means and detecting the difference in signal from said sensor means at a given position of the speed control member and the signal at at least one of said extreme positions.
Dependencies are inferred from the claim text.