CONTROL SYSTEM FOR COMPRESSION-IGNITION ENGINE
Number of patents in Portfolio can not be more than 2000
United States of America
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app pub date -
May 14, 2019
filing date -
May 14, 2019
priority date (Note) -
Published
status (Latency Note)
Importance
Abstract
A compression-ignition engine control system is provided, which includes an intake variable mechanism and a controller. Within a first operating range and a second operating range on a higher engine load side, the controller controls the variable mechanism to form a gas-fuel ratio (G/F) lean environment in which an air-fuel ratio inside a cylinder is near a stoichiometric air-fuel ratio and burnt gas remains inside the cylinder, and controls a spark plug to spark-ignite mixture gas inside the cylinder to combust in a partial compression-ignition combustion. The controller controls the variable mechanism to advance the intake valve open timing on an advancing side of a TDC of the exhaust stroke, as the engine load increases within the first range, and retard the intake valve open timing on the advancing side of the TDC of the exhaust stroke, as the engine load increases within the second range.
First Claim
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