The Design Of LPG Supply System For LR6105Q Dual Fuel Diesel Engine

As an alternative fuel of vehicle diesel engine, LPG (liquefied Petroleum Gas) can decrease the exhaust smoke of diesel engine effectively and solve the problem of energy shortage. For it is a hot-point problem, engine researcher have been paying much attention to it.After analyzing the performance of LPG, this paper provided an electronic controlling LPG fuel supply system to fulfill the function of dual fuel on the diesel engine. The system use the Philip 87C552 single-chip microprocessor as the CPU of the electronic control unit, with high speed valve as injector. The hardware development was discussed in detail in the paper. Also through the study on the modification of LR6105Q LPG/diesel oil engine, It shows that the safety and reliability are satisfactory. The emission performance experiment compared with original engine were made on the modification of LR6105Q LPG/diesel oil engine. The test results show that on the dual-fuel engine the exhaust smoke is greatly reduced. At last, the problem need to be solved were given, and the way to solve the problem were discussed.