1. four-stroke - Noun
2. four-stroke - Adjective
four-stroke (not comparable)
Of or relating to a design of internal combustion engine in which the pistons perform four strokes per engine cycle: intake, compression, power, exhaust.
This motorbike has a four-stroke engine.
A four-stroke engine.
A vehicle or machine powered by a four-stroke engine.
Source: en.wiktionary.orgfour stroke
A four-stroke 12 cylinder engine has an even firing order if cylinders fire every 60° of crankshaft rotation, so a V12 with cylinder banks at a multiples of 60° (60°, 120°, or 180°) will have even firing intervals without using split crankpins. Source: Internet
All engines are built for Moto2 by Honda and are four-stroke 600cc in-line four-cylinder producing ~125 bhp and rev up to 16000 rpm. Source: Internet
At first, North American manufacturers such as Mercury and OMC used engine technology from Japanese manufacturers such as Yamaha and Suzuki until they were able to develop their own four-stroke engine. Source: Internet
American World War II Diesel-electric submarines operated on two-stroke cycle, as opposed to the four-stroke cycle that other navies used. Source: Internet
Following steam engine practice some manufacturers made double-acting two-stroke and four-stroke diesel engines to increase power output, with combustion taking place on both sides of the piston, with two sets of valve gear and fuel injection. Source: Internet
At least three cylinders are required with two-stroke engines and at least six cylinders with four-stroke engines to provide torque every 120 degrees. Source: Internet