valve spring

valve spring

n
1. (Automotive Engineering) a helical spring used to hold closed a valve in the cylinder head of an internal-combustion engine
2. (Mechanical Engineering) any spring that closes a valve after it has been opened mechanically or by flow pressure
References in periodicals archive ?
The automaker is recalling the vehicles to address a valve spring issue that could lead to engine failure.
In the valve operating system in some Lexus engines there is a possibility that the strength of the valve spring may degrade, causing the spring to break.
National Highway Traffic Safety Administration that it had received a report from the Japan market in March 2007 about abnormal noise and engine shaking and examined a broken engine valve spring.
It has already approached some UK manufacturers for parts, including Droitwich-based second tier supplier Barton Cold Form which will produce the first batch of valve spring retainers for NAC.
The valvetrain usually is made up of the camshaft, rocker arm, valve lifter, and valve spring.
The Pneumatic Valve Assembly increases engine performance and economy like the Hydraulic Valve Assembly, which is designed to replace the current valve spring assembly in an internal combustion gasoline or diesel engine.
Tenders are invited for Supply of VALVE SPRING PLATE FOR KIRLOSKR
Initial examination of the engine revealed the number 2 cylinder exhaust valve spring was loose.
The defect in the engine valve spring produces an unusual sound, results in engine malfunction and in the worst cases stalls the engine while the car is moving.
The automotive parts maker supplies valve spring retainers and plugs for manufacturers such as Ford, GM, Caterpillar, Opel and Holdens.
The velocity of this water increases to a point that it overcomes the tension of the waste valve spring, and that valve slams closed.
For example, the pumping head can be made of 316 stainless steel or nickel alloy, the valve, valve seat, and valve spring of Hastelloy C, and the diaphragms and O-rings of Buna-N, Teflon, or Viton.