Abstract:
A variable ignition diesel-gasoline dual fuel powered combustion engine can select spark ignition (SI) or compression ignition (DI) depending on the engine's operating range. The engine may include a cylinder block formed of at least one cylinder each being connected to an air intake manifold supplying air or a gasoline fuel-mixed air and an exhaust manifold exhausting an exhaust gas after combustions; and an ECU controlling the combustion modes. The ECU is configured to judge the engine's operating ranges of an engine depending on the speed and load of the engine, and when the range is the high load range, only the diesel fuel is combusted, and when the range is the low load range, only the gasoline fuel is combusted, and when the range is between the high load range and the low load range, the diesel and gasoline fuels are mixed and combusted.
Abstract:
A variable ignition type diesel-gasoline dual fuel powered combustion engine and control method can select spark ignition or compression ignition depending on the engine operating range. The variable ignition type diesel-gasoline dual fuel powered combustion engine includes a cylinder block formed of a plurality of cylinders each being connected to an air intake manifold sucking air or a gasoline fuel-mixed air and an exhaust manifold exhausting an exhaust gas after combustions; and an ECU controlling the combustion modes. The engine operating ranges are judged by the speed and load of the engine. When the range is the high load range or the low load range, a gasoline fuel combustion is performed, and when the range is between the high load range and the low load range, a diesel-gasoline dual fuel powered step is performed.