Internal-combustion engines – Charge forming device – Including cylinder pressure or temperature responsive means
Patent
1978-03-29
1980-08-12
Myhre, Charles J.
Internal-combustion engines
Charge forming device
Including cylinder pressure or temperature responsive means
123438, F02P 504
Patent
active
042167507
ABSTRACT:
An air-to-fuel ratio control apparatus for a combustion engine which attains the combustion on combustible mixture in the engine cylinder to rotate the engine output shaft. A piezoelectric pressure detector secured to the combustion engine detects a pressure in the engine cylinder and three rotational position detectors respectively detect a first, second and third rotational positions of the engine output shaft. The second rotational position is determined to be intermediate between the first and third rotational positions and correspond to the transition point from compression to power strokes of the combustion engine. An electronic circuit compares a portion of and another portion of a pressure signal produced by the pressure detector during respective rotational intervals determined by the first and second rotational positions and by the second and third rotational positions to discriminate whether the combustion engine attained a complete combustion or not. The combustible mixture supplied to the engine cylinder is controlled to a lean limit so long as the complete combustion is attained. The pressure responsive control is prevented when an air-to-fuel ratio detector detects that the combustible mixture subjected to the combustion is richer than the stoichiometric mixture.
REFERENCES:
patent: 3705573 (1972-12-01), Palazzetti et al.
patent: 3789816 (1974-02-01), Taplin et al.
patent: 3875912 (1975-04-01), Bullo
patent: 3896780 (1975-07-01), Kondo
patent: 3957023 (1976-05-01), Peterson
patent: 3981282 (1976-09-01), Ford
patent: 4054111 (1977-10-01), Sand
patent: 4063538 (1977-12-01), Powell et al.
patent: 4082069 (1978-04-01), Mayer
patent: 4085714 (1978-04-01), Haddon et al.
patent: 4092955 (1978-06-01), Reddy
patent: 4095576 (1978-06-01), Haddon et al.
patent: 4130096 (1978-12-01), Ford
patent: 4131097 (1978-12-01), Farrada et al.
Myhre Charles J.
Nelli Raymond A.
Nippondenso Co., Ltd
LandOfFree
Air-to-fuel ratio control apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Air-to-fuel ratio control apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Air-to-fuel ratio control apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2178512