Piston Ring Pin Bush Marine Engine Spare Parts With Cylinder Liner Main Bearing

Marine Engine Spare Parts Diesel Piston Ring Pin Bush With Cylinder Liner Main Bearing

Specification

Piston

Pistons are the reciprocating parts in the engine cylinder block.

The basic structure of the piston can be divided into top, head and skirt. The top of the piston is the main part of the combustion chamber, and its shape is related to the selected combustion chamber form.

Gasoline engines mostly use flat-top pistons, which have the advantage of small heat absorption area. There are often various pits on the top of diesel engine pistons, and their specific shape, location and size must be adapted to the requirements of diesel engine mixture formation and combustion.

Structure

The whole piston can be divided into three parts: piston crown, piston head and piston skirt.

1, The main function of the piston is to withstand the combustion pressure in the cylinder and transmit this force to the crankshaft through the piston pin and connecting rod. In addition, the piston forms a combustion chamber with the cylinder head and cylinder wall.

2, The piston crown is an integral part of the combustion chamber, so it is often made into different shapes. At most, the gasoline engine piston adopts a flat top or a concave top to make the combustion chamber compact in structure, small in heat dissipation area and simple in manufacturing process. Convex pistons are often used in two-stroke gasoline engines. The piston crown of a diesel engine is often made into various pits.

3, The piston head is the part above the piston pin seat. The piston head is equipped with a piston ring to prevent high temperature and high pressure gas from entering the crankcase and at the same time preventing oil from entering the combustion chamber; most of the heat absorbed by the top of the piston also passes through the piston head The part is passed to the cylinder, and then passed away through the cooling medium.

4, The piston head is machined with several ring grooves for installing piston rings. The number of piston rings depends on the sealing requirements, and it is related to the engine speed and cylinder pressure. High-speed engines have fewer rings than low-speed engines, and gasoline engines have fewer rings than diesel engines. Generally, gasoline engines use two gas rings and one oil ring; diesel engines use three gas rings and one oil ring; low-speed diesel engines use 3 to 4 gas rings. In order to reduce friction loss, the height of the ring belt should be reduced as much as possible, and the number of rings should be reduced under the condition of ensuring sealing.

Chongqing Juvi marine machinery company is an integrated marine technology company that presently specializes in product design, production, and sales.

The Juvi has both, a professional technical staff and strong sales team. Our products have sold to regions as far away as Europe, North America and Asia, among others. Furthermore, our professional technical staffs are able to provide our clients with the perfect solution at the perfect time, while also offering consummate service specifically catered to the individual needs of each and every client. We regularly introduce the most advanced foreign products and technologies into the domestic market and routinely share the latest in scientific and technological advancements with related domestic industries.

Juvi company is administered by the marine equipment production systems. In addition, our company has established longstanding partnerships with other outstanding firms in our industry, thus achieving both technical collaboration and the very best aspects of product sharing, using them to the advantage of our customer base. Every factory that our partner with has passed the CCS,ABS,DNV,LR,NK,RINA,ISO9002, TS16949, UL and other related systems authentication.

More than 10 years of accumulated experience, high-quality products, coupled with our philosophy of absolute integrity in all business dealings have earned us unanimous praise from old and new clients alike, as well as a distinctive reputation in the industry. We look forward to providing your firm with our patented brand of reliable product quality and superior service, just when you need it.