oil ring

[′ȯil ‚riŋ]

(mechanical engineering)

A ring located at the lower part of a piston to prevent an excess amount of oil from being drawn up onto the piston during the suction stroke.

A ring on a journal, dipping into an oil bath for lubrication.

Mentioned in ?

References in periodicals archive ?

This theory suggests that reducing the land width, while maintaining the same ring tension, will lead to a lower oil film thickness and also lower friction for the oil ring in the hydrodynamic regime.

A Study of the Friction of Oil Control Rings Using the Floating Liner Engine

Vegetable oils have high viscosity that hinders its proper combustion in the engine and causes numerous problems such as coking, carbon deposition, sticking of oil ring and thickening and gelling of lubrication.

BIODIESEL, A CLEAN SOURCE OF ENERGY

When looking at the rings of one piston, McGeehan said, "The oil ring groove is absolutely clean....

Leveraging lubrication

US and European Union sanctions against Iran and the threat of a disruption in crude oil supply in the Strait of Hormuz - a narrow channel of waters between Iran and Oman where more than one-third of all global seaborne oil passes through - helped US crude oil ring in the new year this week by spiking to an eight-month high.

US Threats against Iran Increase Gas Prices

The MorrisKeyseater creates internal and external keyways, splines, gears, blind holes, oil ring grooves; tapered keyways, and step keys.

The key to keyseating: cutting keys was a losing proposition until a shop owner invented a better "mousetrap." The new system brought in work and may have the world beating a path to his door

The recirculating oil ring pump replaces once-through water-sealed vacuum pumps to pull vacuum from extruder vents for enhancement of devolatilization efficiencies.

Recirculating vacuum pump

The recirculating oil ring pump is replacing once-through water sealed vacuum pumps to pull vacuum from extruder vents to enhance devolatilization efficiencies.

Vacuum pump system

Typical applications include drum/can filling, fuel oil ring main systems, blending systems and providing suction boost to high pressure pumps.

Pressure control: Jim Miller, product manager SPX Process Equipment Plenty Mirrlees Pumps, takes a look at energy efficient pumping with constant pressure control

The Perfect Circle Division worked in synchronized teams consisting of engineers from Dana and DaimlerChrysler in Brazil, Germany, and the United States to design a complete set of rings including the upper and intermediate compression rings, the oil ring expander, the side rail oil ring, and piston rings.

Manufacturer Breaks With Tradition To Seal Its New Global Engine

* An oil ring installed upside down will "pump" oil up the cylinder and into the ports.

Proper lubrication prevents intake port carbon formation

A furious Michael Schumacher stormed off after his Ferrari packed up after three laps with gearbox trouble when an oil ring broke.

pounds 5 BALL'S UP!; Hill dream turns into nightmare

To reduce operating costs, Honda utilizes a breather design and three-piece oil ring that improves oil circulation efficiency for lower oil consumption.