Research On Gas-Saving Technology For City CNG Buses

City CNG buses are an important part of modern public transportation system. With thegrowing oil crisis, more and more CNG vehicles are used as the city public transport vehicles,but in actual road running, the gas consumption of CNG buses is often more than the standardrated gas consumption. Although natural gas resource is relatively abundant in our country, itis a non-renewable resource, the research about saving gas on city CNG buses is verynecessary.Therefore, the research about saving gas on city CNG buses is an important part ofthe auto energy saving, is an important step to promote sustainable energy development andimplement the national conservation of energy policy, is also the basis of building a clean andfast modern green bus concept.The paper makes analysis from three aspects in response to the phenomenon that CityCNG buses run at high gas consumption. In the gas system, combined with gasoline/CNGdual-use fuel engine bench test, the paper does experiments and makes data processinganalysis on ignition advance angle, regulator outlet pressure, low pressure pipeline leakageand sensor fault factors. In driving operation, with the real vehicle record data, the paperanalyzes the adverse factors of driving operation and raises reasonable measures. In themaintenance, the paper researches the statistical data of repair workshops, analyzes thevarious factors and makes recommendations.Through the analysis of the above three aspects, the paper finally complete the guide ofsaving gas for city CNG buses. The guide not only summarizes the common factors affectingthe City CNG buses and corresponding improvement measures, but also offers us theoperational processes to solve the high gas consumption of the city CNG buses. The guide ofsaving gas for city CNG buses can improve the gas consumption of the city CNG buses andis of great significance to save energy for city buses.