 Dry clutch disc |
| OF THE INVENTION In FIG. 1 and FIG. 2, an approximately triangular outward cam 2 extending ... |
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| Spring coupling for an electromagnetic clutch |
| It is the primary object of this invention to improve the useful life of an electromagnetic clutch ... |
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| Torsion damper disc |
| Object of the Invention An object of this invention is to provide a torsion damper disc in which a ... |
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| Planetary gear starter |
| It is an object of the present invention to provide a starter having a planetary gear reduction ... |
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| Rubber coupling |
| The object of the invention is, therefore, to provide a resilient, e.g. rubber, coupling which is ... |
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| Clutch disk apparatus |
| The object of this invention is to provide a clutch disc apparatus for an automotive vehicle in ... |
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| Starting device for an internal-combustion engine with start-up shock damping |
| I claim: 1. In a starting device for an internal-combustion engine having a rim gear, said starting ... |
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| Device with torsion damping by resilient plates, especially for an automotive vehicle |
| An object of the invention is to mitigate this disadvantage, by minimising the tilting moment ... |
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| Clutch plate for a motor vehicle friction clutch |
| The invention improves the above-described plastic ring of a clutch plate so as to guarantee ... |
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| Valving for vane damper |
| An object of this invention is to provide a torsion damper device having an improved damping factor.... |
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Throttle valve control system for internal combustion engine
| Details |
Inventors: Hotate, Makoto; Nishikawa, Toshio; Takeuchi, Kobuo; Okuno, Itaru; Nakazumi, Tadataka;
Assignee: Mazda Motor Corp. (JP)
Primary Examiner: Cuchlinski, Jr.; William A.
Assistant Examiner:
Attorney, Agent or Firm: Ferguson, Jr.; Gerald J., Hoffman; Michael P., Malamud; Ronni S.
A throttle valve control system comprises an accelerator position sensor for detecting the amount of operation of the accelerator, a throttle valve opening degree determining circuit which receives the output of the accelerator position sensor and determines the opening degree of the throttle valve, and a throttle valve driving device which drives the throttle valve to the position corresponding to the opening degree determined by the throttle valve opening degree determining circuit. The throttle valve opening degree determining circuit is arranged to determine the opening degree of the throttle valve with respect to the amount of operation of the accelerator so that the change in the opening degree of the throttle valve for a given change in the amount of operation of the accelerator is relatively small when the amount of operation of the accelerator is in an intermediate range and is relatively large when the amount of operation of the accelerator is above or below the intermediate range. |
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DETAILED DESCRIPTION In view of the foregoing observations and description, the primary object of the present invention is to provide an electric control type throttle valve control system in which the amount of intake air is linearly related to the amount of operation of the accelerator, whereby stability during cruising can be ensured, acceleration during heavy load operation can be improved and response of the engine upon starting can be improved.
The throttle valve control system in accordance with the present invention comprises an accelerator position sensor for detecting the amount of operation of the accelerator, a throttle valve opening degree determining means which receives the output of the accelerator position sensor and determines the opening degree of the throttle valve, and a throttle valve driving means which drives the throttle valve to the position corresponding to the opening degree determined by the throttle valve opening degree determining means, the throttle valve opening degree determining means being arranged to determine the opening degree of the throttle valve with respect to the amount of operation of the accelerator so that the change in the opening degree of the throttle valve for a given change in the amount of operation of the accelerator is relatively small when the amount of operation of the accelerator is in an intermediate range and is relatively large when the amount of operation of the accelerator is above or below the intermediate range.
With this arrangement, the accelerator operationintake air amount characteristics (the relation between the amount of operation of the accelerator and the amount of intake air introduced into the combustion chamber) can be made substantially linear.
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Control Computers 
