Internal-combustion engines – Intake manifold – Manifold tuning – balancing or pressure regulating means
Patent
1975-12-22
1978-01-03
Cox, Ronald B.
Internal-combustion engines
Intake manifold
Manifold tuning, balancing or pressure regulating means
123 32ED, 123 32EJ, 331 65, F02P 504, F02B 300
Patent
active
040660540
ABSTRACT:
An electronic engine spark timing controller contains a throttle position transducer circuit and an intake manifold vacuum transducer circuit which provide respective signals representing the throttle position and the magnitude of intake manifold vacuum. Each of these two circuits contains a novel configuration of electronic circuit elements to develop an output electrical waveform composed of repetitive pulses each of which has a pulse width representative of the corresponding mechanical input signal which is supplied to the circuit via a transducer in the form of a coil whose inductance is varied in accordance with the mechanical input signal. The coil in each transducer circuit forms a portion of an RL type monostable circuit which exhibits an electrical transient when triggered. Both transducer circuits are triggered from a free-running pulse generator which is set to generate pulses at a fixed frequency. The pulse width of the trigger pulses used to trigger the transducer circuits is appreciably less than the pulse width of the output pulses of the transducer circuits, and each transducer circuit contains a feedback circuit which, when the monostable has been triggered by a pulse from the pulse generator, enables the electrical transient generated therein to continue. The output signals are used in conjunction with additional circuitry to provide spark timing control for the engine.
REFERENCES:
patent: 3474332 (1969-10-01), Brown
patent: 3483851 (1969-12-01), Reichardt
patent: 3832981 (1974-09-01), Wakamatsu
patent: 3935851 (1976-02-01), Wright et al.
patent: 3973539 (1976-08-01), Jones et al.
patent: 3981287 (1976-09-01), Williams et al.
patent: 3997801 (1976-12-01), Caron et al.
Caron LaVerne Andrew
Crall Frederick William
Tomczak Lawrence William
Chrysler Corporation
Cox Ronald B.
LandOfFree
Transducer circuits does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Transducer circuits, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transducer circuits will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-275932