Small diesel engines are widely used for commercial vehicle and passenger car applications due to their higher torque requirements, fuel economy, and better thermal efficiency. These engines are exposed to different operating and environmental conditions and hence emissions from these engines are erratic. Strategies are required to enhance performance and reduce engine-out emissions considering...

BACKGROUND: At the present time all worldwide diesel engine manufacturers have directed their development strategies on way of reduction harmful emissions, fuel efficiency improving and increasing power per liter. Using only accumulator type system is not sufficient for goals achievement. It necessary to use new auxiliary units, such as an exhaust catalyst, recirculation system, injection addit...

Abstract Injection-induced rail pressure fluctuations are proven to cause nonuniform spray development. These also responsible for generating lower injection pressures, the detriment of jet penetration length and break-up timing. Despite vast literature dealing with such issues, several aspects remain unclear. Additionally, need compliance emission legislation has shed light on potential altern...

Different influencing factors in the process of polymer flooding have different degrees influence on development effect, so it is necessary to carry out dynamic prediction before implementing scheme. In this study, reservoir model C Block established and production performance fitted. The fitted used study concentration, injection time, rate multiple timing effect Block. results show that cumul...

Multiplying delay-locked loops (MDLLs) are gaining popularity due to their superior noise performance over conventional phase-locked loops (PLLs) [1,2]. Recent designs are trending towards an all-digital implementation that provides advantages such as compact area, good scalability and low power compared to traditional analog implementations. Achieving fractional frequency multiplication is, ho...

A piston motion controller for a free-piston internal combustion engine is presented. To improve dynamic performance in the control of the piston motion and engine compression ratio, the controller response is determined from a prediction of engine top dead centre error rather than the measured value from the previous cycle. The proposed control approach showed superior performance compared wit...