Research On The Improvement Of HF7Vehicle Fuel Economy

In order to meet the requirements of the national implementation of thethird stage of passenger car fuel consumption limit, apply for subsidies topromote efficient cars, Hafei Motor fuel economy of its main products toenhance development. The combination of public opinion car developmentproject, this study all aspects of vehicle fuel economy up.Hafei Minyi vehicle fuel economy and enhance the development process,the main engine assembly, powertrain, idle start-stop system, EFI systems,vehicle drag coefficient and production consistency control six areas of study.The engine assembly aspects of the intake system, exhaust system andlubrication system, intake system intake manifold from cast aluminum materialfacelift plastic material to enhance the situation, compare the fuel economy.The lubrication systems research the of engine lubricants facelift forlow-viscosity oil, compare the fuel economy to enhance. The exhaust systemis in a different car test exhaust back pressure on the fuel consumption, thestudy confirmed that opinion car facelift low viscosity oil to no obviousimprovement in the fuel consumption; exhaust back pressure in the generalstandard, no significant effect on fuel consumption; final The plastic intakemanifold programs to enhance public opinion vehicle fuel economy. Vehiclefuel economy under the conditions of the transmission system to optimize thedrive ratio and5gear ratio to ensure power decreased marginally, improve thesituation. A detailed analysis of the EFI system the cycle conditions EFI controlstrategy and the impact on fuel consumption, test the catalyst heating, theheating is turned off, the catalytic converter catalytic converter heating time inhalf, migraine dilute, dilute fuel consuming fuel consumption and emissions,clear the EFI control, improve fuel economy program. Research generatorefficiency and the air conditioning system on fuel consumption. Idle start-stopsystem after more than a year’s match, making the vehicle fuel economy hasbeen improved significantly., Summed up a number of measures applied inpublic opinion on board, decrease wind resistance, fuel economy has beendramatically improved by optimization of Lobo and the Sundance Kid Both cars vehicle drag. Aspects to determine public opinion car meet energy-savingHuimin fuel economy limits the program, the target value is reached afterapplication.High fuel consumption results in vehicle production, consistency in theproduction run-in testing of the new car fuel consumption by five, found that theimpact of production consistency reasons, the provisions of the inspectionprocess, in order to ensure the production of vehicles to meetproductionconsistency spot checks standard. But did not develop a method for easydetection vehicle blocking force.Subject to batch production models, enhance research in vehicle fueleconomy aspects play a reference, the results achieved in the development ofnew models and reference, to explore a variety improve fuel economymethods.