Internal-combustion engines – Combustion chamber means having fuel injection only – Combustible mixture stratification means
Patent
1991-03-28
1992-01-07
Wolfe, Willis R.
Internal-combustion engines
Combustion chamber means having fuel injection only
Combustible mixture stratification means
123299, 123305, F02M 4502, F02M 5100, F02D 4134
Patent
active
050781073
ABSTRACT:
A system for controlling fuel injection for an internal combustion engine has a fuel injector provided for injecting fuel directly in a cylinder. A fuel injection quantity determined by engine operating conditions is compared with a smaller reference value corresponding to a stratified charge and with a larger reference value corresponding to a homogeneous charge. A combined mode signal is produced when the determined fuel quantity is between the smaller and larger reference values. A stratified charge is determined in a low and middle engine load range, and a homogeneous charge is determined in a heavy engine load range. In response to the combined mode signal, a combined mode charge is determined, where the fuel is injected in twice at a former injection timing and a latter injection timing in the compression stroke.
REFERENCES:
patent: 2483288 (1949-09-01), Malin
patent: 2484009 (1949-10-01), Barber
patent: 3154059 (1964-10-01), Witzky et al.
patent: 4111177 (1978-09-01), Regueiro
patent: 4949689 (1990-08-01), Schlunke
patent: 5050551 (1991-09-01), Morikawa
Farber Martin A.
Fuji Jukogyo Kabushiki Kaisha
Wolfe Willis R.
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