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Two-stroke oil (also referred to as two-cycle oil, 2-cycle oil, 2T oil, or 2-stroke oil) is a special type of motor oil intended for use in crankcase compression two-stroke engines, typical of small gasoline -powered engines.
Two-stroke engines often have a high power-to-weight ratio, power being available in a narrow range of rotational speeds called the power band. Two-stroke engines have fewer moving parts than four-stroke engines, and thus are cheaper to manufacture. In countries and regions with stringent emissions regulation, two-stroke engines have been phased out in automotive and motorcycle uses. In ...
The Detroit Diesel Series 71 is a two-stroke diesel engine series, available in both inline and V configurations, manufactured by Detroit Diesel. The number 71 refers to the nominal displacement per cylinder in cubic inches, a rounding off of 70.93 cu in (1.2 L).
Most petrol (gasoline, Otto cycle) and diesel ( Diesel cycle) engines have an expansion ratio equal to the compression ratio. Some engines, which use the Atkinson cycle or the Miller cycle achieve increased efficiency by having an expansion ratio larger than the compression ratio.
API-TC. API TC is a certification for two-stroke oils, awarded by the American Petroleum Institute. It is given after the product passes through stringent tests that determine the level of detergent performance, dispersion, and anti-oxidation. It is the only remaining, not revoked classification of the API Two-Cycle motor oil specifications (TA ...
Efficiency decreases for small internal combustion engines. A 67 ml 4-stroke engine converted to hydrogen and tested with a dynamometer at the best operating point (3000 rpm, 14 NLM (normal liters per minute), 2.5 times stoichiometric air/fuel ratio) achieved 520 W and 21% efficiency.
The Hornsby-Akroyd oil engine and other hot-bulb engines are different from Rudolf Diesel 's design, where ignition occurs through the heat of compression alone; an Akroyd engine will have a compression ratio between 3:1 and 5:1, whereas a typical diesel engine will have a much higher compression ratio usually between 15:1 and 20:1, making it more efficient. Also, in an Akroyd engine the fuel ...
Brake-specific fuel consumption Brake-specific fuel consumption ( BSFC) is a measure of the fuel efficiency of any prime mover that burns fuel and produces rotational, or shaft power. It is typically used for comparing the efficiency of internal combustion engines with a shaft output.
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