Internal-combustion engines – Intake manifold – Manifold tuning – balancing or pressure regulating means
Patent
1976-02-24
1978-04-04
Cox, Ronald B.
Internal-combustion engines
Intake manifold
Manifold tuning, balancing or pressure regulating means
123 32EB, F02P 504
Patent
active
040820696
ABSTRACT:
A first sequence of pulses is generated synchronously with operation of the apparatus, for example with rotation of the engine crankshaft. A reference pulse is generated upon occurrence of an operating state, for example a predetermined angular position of the crankshaft, as well as a second reference pulse occurring after the first and after a predetermined time interval has elapsed. The pulses of the sequence are counted and accumulated until the second reference pulse occurs, and are then decremented at the same pulse rate until the counter reaches a predetermined count state (for example zero), at which moment the event is triggered, for example an ignition pulse issued. The system permits adaptation to various reference pulse generators by adjustment of timing intervals, thus permitting use of reference pulses of less accuracy with respect to the apparatus with which the pulse generators are associated.
REFERENCES:
patent: 3696303 (1972-10-01), Hartig
patent: 3831563 (1974-08-01), Brittain et al.
patent: 3908616 (1975-09-01), Sasayama
patent: 3941103 (1976-03-01), Hartig
patent: 3942491 (1976-03-01), Seite et al.
patent: 3946709 (1976-03-01), Monpetit
Cox Ronald B.
Robert & Bosch GmbH
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