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An engine is described as oversquare or short-stroke if its cylinders have a greater bore diameter than its stroke length, giving a bore/stroke ratio greater than 1:1. An oversquare engine allows for more and larger valves in the head of the cylinder, higher possible rpm by lowering maximum piston speed, and lower crank stress due to the lower ...
For example, if the static compression ratio is 10:1, and the dynamic compression ratio is 7.5:1, a useful value for cylinder pressure would be 7.5 1.3 × atmospheric pressure, or 13.7 bar (relative to atmospheric pressure). The two corrections for dynamic compression ratio affect cylinder pressure in opposite directions, but not in equal strength.
The LFV is a direct-injection 1.5 L turbocharged SGE variant, with a 74 mm × 86.6 mm (2.91 in × 3.41 in) bore and stroke for a total capacity of 1,490 cc (1.5 L). Compression ratio is 10.0:1 and the engine can run on regular unleaded-grade gasoline. Maximum engine speed is 6500 rpm. Automatic Start-Stop is available with this engine. Assembly ...
A gasoline engine burns a mix of gasoline and air, consisting of a range of about twelve to eighteen parts (by weight) of air to one part of fuel (by weight). A mixture with a 14.7:1 air/fuel ratio is stoichiometric, that is when burned, 100% of the fuel and the oxygen are consumed.
Current Honda general-purpose engines are air-cooled 4-stroke gasoline engines but 2-stroke, Diesel, water-cooled engines were also manufactured in the past. The current engine range provide from 1 to 22 hp (0.7 to 16.5 kW). More than 5 million general-purpose engines were manufactured by Honda in 2009.
- DXDB-evo2; no kangaroo because is using 2nd air injection for catalyst pre-heating and normal air-fuel mixture. 110 kW (150 PS; 148 bhp) at 5,000 rpm; 250 N⋅m (184 lbf⋅ft) at 1,500–4000 rpm - DNKA-evo2; no kangaroo because is using 2nd air injection for catalyst pre-heating and normal air-fuel mixture.
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The stroke ratio, determined by dividing the bore by the stroke, traditionally indicated whether an engine was designed for power at high engine speeds or torque at lower engine speeds. [ 2 ] [ 3 ] The term "bore" can also be applied to the bore of a locomotive cylinder or steam engine pistons .