A Research on Evaluating the Effect of Applying Gasoline Engine With Early Opening and Lately Closing Vavle on Hybrid Vehicle

When switching to a hybrid car, the regular working area of the heat engine will be altered, which is higher-fuel consumption section of the engine. One of the solutions to reduce fuel consumption is to adjust the opening angle early, late closing of the valve to fit the regular work area of the engine. This article presents the results of calculating the early opening angle, late closing of the valve in accordance with the regular work area. To evaluate the efficiency of the engine using the new camshaft, the study carried out the installation of camshafts on the engine and test run. At this stage of operation, with the early opening angle, the delayed opening of the engine valve has reduced fuel consumption compared to the original engine at all speed modes. Especially in the speed mode n = 2300 [rpm], M = 26 [N. m], the maximum fuel consumption is reduced to 7.8%. Fuel consumption throughout the region at M = 26 [N. m] average decreased by 6.3%. The amount of CO and HC significantly reduced compared to the original engine, while NOx increased slightly