Ignition timing control device for automotive ignition system
First Claim
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1. A spark timing control device for an internal combustion engine system having a throttle valve movable in its intake port, which comprise:
- a throttle velocity signal generating means generating a throttle velocity signal representative of the velocity of the throttle movement;
first means producing a first signal in response to said velocity signal when said velocity signal exceeds a positive predetermined level;
second means producing a second signal in response to said velocity signal when said velocity signal lowers below a negative predetermined level;
third means producing a third signal when the engine speed lowers below a predetermined value; and
fourth means performing ignition timing advance control when it receives said second signal and when it receives said first signal in the absence of said third signal.
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Abstract
A fully transistorized control device for controlling spark ignition timings in an ignition system of an automotive internal combustion engine, characterized in that the ignition timings are advanced or retarded in accordance with the movement of the carburetor throttle valve during acceleration or deceleration of the vehicle and with the revolution speed of the engine during deceleration of the vehicle.
22 Citations
9 Claims
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1. A spark timing control device for an internal combustion engine system having a throttle valve movable in its intake port, which comprise:
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a throttle velocity signal generating means generating a throttle velocity signal representative of the velocity of the throttle movement; first means producing a first signal in response to said velocity signal when said velocity signal exceeds a positive predetermined level; second means producing a second signal in response to said velocity signal when said velocity signal lowers below a negative predetermined level; third means producing a third signal when the engine speed lowers below a predetermined value; and fourth means performing ignition timing advance control when it receives said second signal and when it receives said first signal in the absence of said third signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification