Of .4100 Qbzl Diesel Engine Two Variable Pressurization System

Improving liter of power is an important direction that the diesel develops. The regulated two-stage turbo charging technology can notable improves power per liter and the torque of low speed, has already looked upon as one of the technology having a potential comparatively satisfying future vehicle using a request. At present ,in the homeland the research to regulated two-stage turbo charging technology is less, uses high-speed diesel engine first step to design that two stage pressure boost system, so carrying out an experiment on the person study with secretly scheming and the exploration against and significance therefore to vehicle having certain value.The paper in the basis of looking up the home and abroad documents, has carried out studying to regulated two-stage turbo charging mating specifically for 4100 inter cooled turbo charged diesel engine are hit by the cold diesel. According to the structure parameter and designing target of origin engine, adopt the JTK of Professor Gu Hong Zhong to estates charging parameter. According to the estimated result, for 4100 inter cooled turbo charged diesel engine selected and matched high low pressure, Through the software IDEAS 11 simulate 3-D designs the connection of turbo charged pipeline, by the fact that regulated two-stage turbo charging system and their installation have carried out 3-D imitate. The rest designing that changeable pressure boost system and the diesel mating having processed a two stage are in progress here on the basis, is tested, the function having analyzed the two stage pressure boost diesel comparatively changes. Through the theory of studying the diesel Simulation is calculative, applying the AVL BOOST software to have carried out the numerical value analog computation on changeable pressure boost of two stage system. Use the result of regulated two-stage turbo charging system tests to have carried out the impact of the assignment model being unlike the energy exhausting over two stage pressure boost diesel function having verified, secretly scheming against on calculation model.By the fact that the exploration of performance experimentation and the simulation result all above, have gained the designs method of regulated two-stage turbo charging system and the optimize assignment proportion, have provided guiding for optimizing regulated two-stage turbo charging system .