compression release

compression release

[kəm′presh·ən ri′lēs]
(mechanical engineering)
Release of compressed gas resulting from incomplete closure of intake or exhaust valves.
References in periodicals archive ?
The compression release engine brake works in concert with the engine's positive power valvetrain to effectively convert a diesel engine from a power producing machine into a power consuming air compressor through selective control of various engine valves.
While driveline retarders provide increased retarding performance over standard compression release brakes, they are an expensive option which add considerable mass to the vehicle and can exceed the thermal capacity of the radiator during prolonged retarding [2].
It incorporates advanced technologies such as high-pressure common rail, SCR (selective catalytic reduction) exhaust after-treatment, Jacobs in-cylinder braking (compression release braking), 4-valve overhead camshaft and an integral cylinder head.
Tahery verified the celiac trunk compression release after a division of the right crus of the diaphragm associated to ganglionectomy.
Since this was John Deere's first diesel, a compression release had not been built in and the injection rack stuck open.
These include overhead valves (hence the OHVI designation), hardened crankshafts, camshafts and valve seats, chrome compression rings, a mechanical governor, helical drive gears and mechanical compression release. The MaxTorq governor, with gen-set operation in mind, limits rpm droop to 7%, Sugar said,
When electronic valvegear is ready, Heiter says the unit could start up to a 3.3L engine via the V-belt if the valves are programmed to provide compression release.
The finishing touch is a flush-mounted compression release, located near the starter-rope handle.
In this paper, a case study of a heavy duty engine valvetrain with a compression release engine brake system is investigated.
Other standard features include mechanical governors; recoil starters with automatic compression release (a 12 V electric starter is available as an option); integral fuel tanks; external fuel filters; full flow oil filters; dry type air cleaners; and shielded mufflers.
The new 15LD225 is mechanically governed, has recoil starting and automatic compression release as standard, with an electric start option.
The CS PRO engines offer several standard features including an advanced electronic ignition system, automatic compression release and dual main ball bearings that result in easy starting in all types of weather, according to Jeff Bracht, current product design engineer for Kohler.