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Diesel Emissions Reduction at High Load With Variable Valve Mechanism
Published May 01, 2006 by Society of Automotive Engineers of Japan in Japan
Event: JSAE Spring Conference
A variable valve timing (VVT) mechanism was applied to achieve clean diesel combustion (CDC) at high load in a light-duty, high-speed direct injection (HSDI) diesel engine. High EGR rate combined with late intake valve closing (LIVC) and high-pressure late injection (HPLI) can provide low-temperature premixed diesel combustion (LTC) with mild pressure rise rates and low peak in-cylinder pressures. This combustion strategy can simultaneously reduce NOx and smoke, extending the operating range of NOx-less and smokeless diesel combustion to full-load condition with some fuel consumption penalty.
- Daisuke Kawano - National Traffic Safety and Environment Laboratory
- Hisakazu Suzuki - National Traffic Safety and Environment Laboratory
- Hajime Ishii - National Traffic Safety and Environment Laboratory
- Yuichi Goto - National Traffic Safety and Environment Laboratory
- Yutaka Murata - Waseda Univ.
- Yasuhiro Yoshimi - Waseda Univ.
- Jin Kusaka - Waseda Univ.
- Yasuhiro Daisho - Waseda Univ.
- Matsuo Odaka - Waseda Univ.