Dr Yan Zhang
Dr Yan Zhang of the School of Engineering and Design discusses a unique two/four stroke switchable camless direct injection boosted gasoline engine. There is no camshaft on the engine. The valvetrain is driven by the electro-hydraulic actuation, which allows to vary the valve timings flexibly. Many combustion modes and engine operating modes can be achieved on this engine. Homogeneous Charge Compression Ignition (HCCI) also referred as Controlled Auto Ignition (CAI) is the potential combustion technology for the engine to reduce fuel consumption and emissions simultaneously. HCCI/CAI has been achieved on this engine in both two-stroke and four-stroke cycles.
