Back to results
US 4,919,097 AGranted
Engine output control system
AssigneeMazda Motor Corporation
InventorsSyuzi Mitui, Kouichirou Waki, Yasuhiro Harada
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeMazda Motor Corporation
InventorsSyuzi Mitui, Kouichirou Waki, Yasuhiro Harada
Estimating the term…
An engine output control system comprising an acceleration detector for detecting an amount of a stroke of accelerator and producing an acceleration signal in accordance with the amount of the stroke, throttle valve, electrical control mechanism for determining an electrical control signal to actuate the throttle valve in accordance with the electrical control signal, mechanical control mechanism mechanically linked with the throttle valve for actuating the same in accordance with the amount of the stroke, abnormality detector for detecting an abnormality of the electrical control mechanism, switch mechanism for producing a signal to switch a control for the throttle valve between the mechanical and the electrical control mechanism, and switching control mechanism for performing an actual switching action from the mechanical control mechanism to the electrical control mechanism based on the signal from the switching mechanism under a specific engine operating condition.
An engine output control system comprising an acceleration detecting means for detecting an amount of a stroke of acceleration means and producing an acceleration signal in accordance with the amount of the stroke of the acceleration means, output control means for controlling an engine output, electrical control means for determining an electrical control signal to actuate the output control means in accordance with the electrical control signal, mechanical control means mechanically linked with the output control means for actuating the output control means in accordance with the amount of the stroke of the acceleration means, abnormality detecting means for detecting an abnormality of the electrical control means, switch means for producing a signal to switch a control for the output control means between the mechanical control means and the electrical control means in a manner that the output control means is controlled by the mechanical control means when an abnormality is detected by the abnormality detecting means and is controlled by the electrical control means when any abnormality is not detected by the abnormality, and switching control means for performing an actual switching action from the mechanical control means to the electrical control means based on the signal from the switch means under a specific engine operating condition.
An engine output control system comprising output control means for controlling an engine output, acceleration means for producing a stroke in accordance with an amount of operation, a plurality of control properties showing respective relationships between the output control means and the acceleration means, property selecting means for selecting one of the control properties in accordance with an engine operating condition to determine a control gain for the output control means in response to the acceleration means, the property selecting means carrying out an actual selecting action of one of the control properties under a specific engine operating condition in which the engine output is not substantially affected.
An engine output control system comprising output control means for controlling an engine output, acceleration means for producing a stroke in accordance with an amount of an operation, electrical control means for controlling the engine output electrically, clutch means arranged between the electrical control means and the output control means for controlling a transmission of a control gain produced by the electrical control means to the output control means, mechanical control means for mechanically connecting the acceleration means with the output control means so as to control the engine output mechanically under a specific engine operating condition, gain control means for reducing the control gain for the output control means by a predetermined period after the mechanical control means is changed to the electrical control means.
Dependencies are inferred from the claim text.