While steel pistons have been in use for a long time in commercial vehicle diesel engines, the first series production applications for passenger car diesel engines are currently imminent. The main reason for the use of steel pistons in high speed diesel engines is not, as maybe initially hypothesized, the increasing requirements on the component strength due to increasing mechanical loads, but rather challenges based on the actual CO2-legislation. The increasing requirements to reduce the fuel consumption necessitate new innovative technologies. The imminent penalties for exceeding the prescribed CO2 emissions seem to make the steel piston a viable alternative today, despite its higher manufacturing costs. So far, the CO2-benefits using steel pistons were mainly ascribed to the reduced friction between piston and cylinder liner due to no thermal interference.
Analysis of Aluminum and Steel Pistons—Comparison of Friction, Piston Temperature, and Combustion
Contributed by the Coal, Biomass and Alternate Fuels Committee of ASME for publication in the JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received February 14, 2014; final manuscript received February 18, 2014; published online May 2, 2014. Editor: David Wisler.
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Schreer, K., Roth, I., Schneider, S., and Ehnis, H. (May 2, 2014). "Analysis of Aluminum and Steel Pistons—Comparison of Friction, Piston Temperature, and Combustion." ASME. J. Eng. Gas Turbines Power. October 2014; 136(10): 101506. https://doi.org/10.1115/1.4027275
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