New Generation Direct Injection Gasoline Engine
Researcher: R. Standing
Supervisors: Prof. H. Zhao, Dr. T. Ma
Sponsors: EPSRC, Ford Motor Company
Objectives
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To research and develop Direct Injection gasoline engines with Controlled Autoignition (CAI) combustion.
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To achieve simultaneous reductions in NOx emissions and fuel consumption (CO2 emissions).
Methodology
Residual Gas trapping by negative valve overlap.
Cam Profiles for SI and CAI operation
Engine
Prototype Ford 1.6l 4-cylinder Direct Injection gasoline engine with dual variable valve timing devices.
Effects of Injection Timings on Engine's Performance & Emissions
(Left) In-cylinder pressure vs. Injection timing
(Right) NOx emission vs. Injection timing
(Left) IMEP values vs. Injection timing
(Right) ISFC values vs. Injection timing
