Ryo Yamaizumi   Haoyun Shi   Tatsuya Kuboyama   Yasuo Moriyoshi   
SAE Technical Paper Series 2022年1月
In recent years, the improvement in the fuel efficiency and reduction in CO2 emission from internal combustion engines has been an urgent issue. The lean burn technology is one of the key technologies to improve thermal efficiency of SI engines. H...
Kuniyoshi Eto   Tatsuya Kuboyama   Yasuo Moriyoshi   Toshio Yamada   
SAE Technical Paper Series 2022年1月
Knocking occurs within the high-speed range of small two-stroke engines used in handheld work equipment. High-speed knock may be affected by the engine speed and delivery ratio. However, evaluation of these factors independently using experimental...
As an effective method to improve engine performance at low engine speed, and reduce fuel consumption, VGT has been widely used in diesel engines. However, due to the higher exhaust temperature of the gasoline engines, it still has challenges of a...
The introduction of real driving emissions cycles and increasingly restrictive emissions regulations force the automotive industry to develop new and more efficient solutions for emission reductions. In particular, the cold start and catalyst heat...