Influence of Water Injection on Performance of Diesel Engine

  • A. StartcevEmail author
  • S. Romanov
  • G. Romanova
Conference paper
Part of the Lecture Notes in Mechanical Engineering book series (LNME)


The article presents the results of research to improve the fuel efficiency of the engine 4F 11/12.5 (D-240) using water injection. The relevance of the use of water (water vapor condensate) as an additive to hydrocarbon fuel is shown, which contributes to the increase in power and fuel efficiency in the operation of the internal combustion engine. It was experimentally established that the greatest increase in the effective power of a diesel engine 4F 11/12.5 (D-240) is observed when water is supplied in a volume equal to 27–32% of the volume of the cyclic supply of diesel fuel. It has been experimentally established that with an increase in the volume of supplied water, the temperature of the exhaust gases decreases, with an average intensity of about 1 °C per 1% of the water supply. The greatest decrease in the temperature of the exhaust gases was noted at the maximum torque regime. The results of the studies showed a steady increase in the indicator pressure by an average of 18–22%. A decrease in the rigidity of the operation of the investigated engine is achieved, which is explained by a decrease in the rate of change in the indicator pressure (on average by 5–15%), in comparison with work on diesel fuel.


Diesel engine Water injection Water vapor Indicator diagram Indicator power Effective power Fuel economy 


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© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.South Ural State Agrarian University and South Ural State UniversityChelyabinskRussian Federation
  2. 2.State Agricultural University of the Northern Trans-Ural RegionTyumenRussian Federation

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