lubricgreasess

　　In a piston-type compressor which has a plurality of cylinders, usually, a valve plate device is interposed between a cylinder head having a suction chamber and a discharge polyurea Grease chamber and a cylinder block having cylinder bores. This valve plate device has a valve plate having a suction hole communicating between the suction chamber and the cylinder bore and a discharge hole communicating between the cylinder bore and the discharge chamber, a suction valve disposed on a surface of the valve plate facing the cylinder block for opening and closing the suction hole, and a discharge valve disposed on a surface of the compressor valves plate facing the cylinder head for opening and closing the discharge hole.

More concretely, when a piston is in a suction stroke, the suction valve opens the suction hole of the valve plate and the discharge valve closes the discharge hole of the valve plate, and when the piston is in a discharge stroke, the suction valve closes the suction hole of the valve plate and the discharge valve opens the discharge hole of the valve plate, thereby preventing back flow of gas. The lubricant oil having adhered to the valve plate enters into a portion between the valve plate and the suction valve, and the suction valve is made difficult to be opened by a sticking force due to the surface tension, the adhesion force, etc. of the lubricant oil.

As a result, in order to open the suction valve, it is necessary to add a force excessively by an amount of the sticking force due to the surface tension, the adhesion force, etc. of the lubricant oil in addition to a sticking force due to a rigidity of the suction valve itself, and in order to obtain this force, it becomes necessary to enlarge a pressure difference between the inside of the cylinder bore and the inside of the suction chamber, and whereby, the piston must perform an excessive work.

Where, as for the discharge valve side, in order to prevent an excessive compression that may occur by a condition where the discharge valve becomes difficult to be opened by the lubricant oil, Patent document 1 discloses a structure wherein a gas filling concave portion is formed on a portion of the valve plate facing the discharge valve.

Oil changes for your automobile are really essential and here at AP Engineering we understand the magnitude of oil changes. Here we explain to you why: Oil is an imperative lubricant in your engine. It allows metal press against metal with no damage. For reference, it oils the pistons as they move down and up in the cylinders. Without oil, the metal-on-metal friction produces so much heat that in due course the surfaces weld themselves together and the engine seizes. You should check your vehicle's oil at least once a month to confirm that there's enough and that it isn't toxified. Oil drops the friction in your engine and additionally keeps it running steadily. Each time you check your oil, if it is unclean or smells of gasoline, it should really be changed. Most vehicle manufacturers strongly recommend oil changes on annual basis or every 7,500 miles. For diesel engines and turbocharged gasoline engines, the typical prescription is every 3,000 miles or six months.

However, since every car is completely different, every car demands different oil change intervals. The most suitable place to start in working out you car's specific oil changes needs is your owner's manual. In most cases, manuals will give a timeline for ideal conditions and for rough conditions So what happens if you never change the oil? •Dirt will build up in the oil. The filter will remove the dirt for a while, but eventually the filter will clog and the dirty oil will automatically pass through the filter through a relief valve. Dirty oil is thick and harsh, so it causes more wear. •Additives in the oil for example laundry soaps, dispersants, rust-fighters and friction reducers will wear out, so the oil won't lubricate as well as it should. It is most effective to change your filter with every oil change. Make certain that you are using a high-quality filter. If the filter does not function properly or under-performs, it could cause significant damage. The importance of the right oil.

Making certain you use the right oil for your car is one of the most important decisions you have to make to guarantee correct maintenance for your car. Motor oil has many functions including protection of the moving parts, cleaning of all pipes and parts it comes to contact with and haessing the horsepower that an engine gives out, effectively improving the MPG and efficiency of the car. Which means, to this end, picking an inferior oil leads to greater costs that could be averted. Oftentimes, a range of oils could be appropriate to choose from, on the other hand choosing the ideal oil comes down to choosing the one with the correct weight and density from the range available.

Superior quality motor oils work by stopping overheating by eliminating plenty of the heat from the engine and holding the temperatures down. High quality engine oils also function by keeping the engine free of dirt and grime. It is really an urban myth that dirty oil is bad oil, typically it simply means it is doing the job thoroughly and capturing and transporting the dirt in the engine away from the moving parts. At A P Engineering, we use a range of Valvoline oils, a fine quality brand that offers different oils for a range of engine types, making sure we always have premium oil at our disposal for your vehicle maintenance.