Tag: thermal

Car Engine Efficiency

What Is The Thermal Efficiency Of Some Of The Commercially Offered Automobile Engines?

- by Anthony McCarthy

Car Engine EfficiencyPlease note that the term work performed relates to the energy delivered at the clutch or at the driveshaft. This is mainly due to the fact the generator can often be run at the most efficient speed for energy generation although a car’s engine speed is based on the preferred speed for the automobile, which may not be most energy effective. Typically, the engines lack energy compared to traditional Otto-cycle engines-offset in hybrids by additional power from the electric motor. So even if the car is traveling at 300 kph, the air in the ducts is probably only at 30-40 kph.

The new units, 1. and 1.3-liters in capacity, ought to enable ten-15 % greater economy than their current equivalents. Kevin Laboe, who leads the Powertrain Thermal Management Team at Chrysler’s Advanced Powertrain Group, Detroit, MI, and who led the simulation and testing teams, says the challenge was to distribute …

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Toyota Gasoline Engine Achieves Thermal Efficiency Of 38 %
Car Engine Efficiency

Toyota Gasoline Engine Achieves Thermal Efficiency Of 38 %

- by Anthony McCarthy

Researchers take laser-based velocity measurements at the Sandia National Laboratory’s Combustion Investigation Facility. By comparison, the V8 engines pre-2014 achieved thermal efficiency of 29 % and the 1st iteration of the Mercedes V6 turbo in 2014 managed 40 percent thermal efficiency. Toyota has now developed a new gasoline engine which it claims has a maximum thermal efficiency of 38 %-higher than any other mass-made combustion engine. Meanwhile, following 2015, the technology has sophisticated the efficiency of engines to 47% and producing historic highs of power – and all with an ICE restricted to consuming fuel at a rate of just 100kg/hr, meaning that 50 % of the potential power than can be derived from a unit of petrol is becoming converted.

Even though the heat exchangers on a racing automobile are particularly effective, their potential to cool the engine is a function of the ‘air-side capacity’. By 2020, further increase …

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