Influence of Volume Ratio on Fuel Economy of Internal Combustion Engine with Charge Transit between Different Cylinders
Author(s): FAN Pan-pan, LU Yong, PEI Pu-cheng
Pages: 31-35
Year: 2014 Issue: 4
Journal: Vehicle Engine
Keyword: charge transit between different cylinders; fuel economy; volume ratio; internal combustion engine;
Abstract: A conventional 4-stroke gasoline engine was modified into an innovative internal combustion engine with the tech-nology of charge transit between different cylinders .The working cycle of the new engine was conducted by a pair of cylinders . The former cylinder worked in the form of conventional 4-stroke cycle ,while the latter cylinder worked in the form of non-com-bustion 4-stroke cycle .The burned gas of former cylinder flowed into the latter cylinder through a connection pipe and then ex-hausted out of the engine from the latter cylinder .Compared with the original engine ,the new engine had better fuel economy . Moreover ,the influence of volume ratio variation between former and latter cylinders on engine performance was studied .Ac-cording to the results of GT-Power simulation ,the volume ratio of lowest fuel consumption in partial load increased with the in-crease of torque and hardly changed with the increase of speed .In the conditions of external characteristic ,the optimal volume ratio with maximum torque and lowest fuel consumption existed and gradually decreased with the increase of engine speed .
Pages: 31-35
Year: 2014 Issue: 4
Journal: Vehicle Engine
Keyword: charge transit between different cylinders; fuel economy; volume ratio; internal combustion engine;
Abstract: A conventional 4-stroke gasoline engine was modified into an innovative internal combustion engine with the tech-nology of charge transit between different cylinders .The working cycle of the new engine was conducted by a pair of cylinders . The former cylinder worked in the form of conventional 4-stroke cycle ,while the latter cylinder worked in the form of non-com-bustion 4-stroke cycle .The burned gas of former cylinder flowed into the latter cylinder through a connection pipe and then ex-hausted out of the engine from the latter cylinder .Compared with the original engine ,the new engine had better fuel economy . Moreover ,the influence of volume ratio variation between former and latter cylinders on engine performance was studied .Ac-cording to the results of GT-Power simulation ,the volume ratio of lowest fuel consumption in partial load increased with the in-crease of torque and hardly changed with the increase of speed .In the conditions of external characteristic ,the optimal volume ratio with maximum torque and lowest fuel consumption existed and gradually decreased with the increase of engine speed .
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