Internal-combustion engines – Combustion chamber means having fuel injection only – Combustible mixture stratification means
Patent
1998-06-03
1999-08-17
Kwon, John
Internal-combustion engines
Combustion chamber means having fuel injection only
Combustible mixture stratification means
123305, F02B 1700
Patent
active
059378220
ABSTRACT:
An engine control system for an internal combustion engine of a type changing a fuel injection timing between a first injection timing to achieve homogeneous charge combustion and a second injection timing to achieve stratified charge combustion comprises at least one sensor and a controller for controlling fuel injection timing and quantity. The controller selects one of homogenous combustion mode and stratified combustion mode in accordance with the engine operating condition sensed by the sensor, calculates the fuel injection quantity for the selected combustion mode, and enables a start of a homogeneous mode injection of fuel to a given cylinder of the engine at the first injection timing for the homogeneous mode if calculation of the homogeneous mode fuel injection quantity for the given cylinder is finished prior to the first injection timing for the given cylinder. If the calculation of the fuel injection quantity for the given cylinder is not finished yet, the control system performs a stratified mode injection of the fuel to the given cylinder at the second injection timing.
REFERENCES:
patent: 4955339 (1990-09-01), Sasaki et al.
patent: 5191531 (1993-03-01), Kurosu et al.
patent: 5333583 (1994-08-01), Matsuura
patent: 5732675 (1998-03-01), Yoshida et al.
patent: 5789367 (1998-08-01), Lida et al.
Kwon John
Nissan Motor Co,. Ltd.
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