Valve Timing Based Optimization of Diesel Engine with High Exhaust Back Pressure

For the problems of larger pump loss,higher residual gas coefficient and worse fuel economy at high exhaust back pressure,the scheme of optimizing the valve timing was put forward.With GT-Power software,the model of LD1110 singlecylinder diesel engine was built and the optimization of valve timing was analyzed.The results showed that the brake mean effective pressure(BMEP)and the brake specific fu…