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UNITY AUTO PARTS (CHINA) LIMITED  

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Enlarge MITSUBISHI PISTON RING 4DR5 OEM 31617-02012; 31617-02013 ;31617-05102 ;31617-05103 FOR TRUCK ENGINE

MITSUBISHI PISTON RING 4DR5 OEM 31617-02012; 31617-02013 ;31617-05102 ;31617-05103 FOR TRUCK ENGINE 

Place of Origin: Zhejiang, China (Mainland) 
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Product Detail

Model No.: 4DR5


 
 
 
Piston rings are components directly responsible for engine performance, and have progre

 

 

 

Piston rings are components directly responsible for engine performance, and have progressed along with engines. Each engine manufacturer's most recent engines require further improvements in fuel efficiency, cleaner exhaust, and longer service life because of environmental concerns. Along with these requirements, further lowering friction and improving wear-resistance are required for piston rings, Developing low tension rings, narrow-width rings, and a combination of high-quality, high-performance piston ring materials with surface treatment are the tendency for now.

 

 

Function1.Compression gas sealing

Piston rings maintain gas compression between the piston and the cylinder wall.

Piston rings seal the cylinder so that combustion gas generated at the time of ignition does not leak into the opening between the piston and the cylinder. If combustion gas leaks, the engine cannot output sufficient power, increasing fuel consumption? not good both in terms of economy and the environment.

 

Function2.Lubricating oil film control

Piston rings usually make necessary minimum lubricating oil film for preventing scuffing.

Since gas ignition is repeated many times, the piston goes up and down inside the engine at a rate of several thousand times per minute. A small amount of oil is poured over the pistons so they move smoothly, with little friction between metal and metal. Piston rings adjust the amount of oil.

 

Function3.Heat transfer

Piston rings transfer heat from the piston crown to the cylinder.

When gas ignition takes place, the temperature inside a piston reaches approximately 300 C. If heat accumulates inside the piston, the engine may be damaged. For that reason, it is necessary to release the heat build-up. Piston rings help release this heat.

 

Function4.Support piston in the cylinder

Piston rings prevent the piston from knocking on the cylinder wall.

If the piston inclines inside the cylinder, it may touch inside parts and cause engine failure as well. Piston rings support pistons to allow for smooth up and down motion.

 

 

Piston Ring Technology

 

The Ceramic Penetration


Ceramic material is penetrated into the surface by chemical method and metal-ceramic composite layer comes into being.

 


Advantages:


1. Efficient Oil & Fuel Consumption--Fuel 3%~8% efficient, engine oil 30%-60% efficient.
2. Extended service life--Running-in between piston ring and liner  reduces by 100%~ 300%, engine life is extended dramatically.
3. Better Heat Resistance--Heat conduction rises by 40% under normal temperature, leading to engine temperature reduction by 150~300.
4. Broadened Engine Adaptability--Thanks to ceramic-penetrated rings, engine can adapt to extreme high & low temperature, windy and sandy, low density oxygen working environment.
5. Air Pollution Reduction--Blow-by after piston ring friction is prevented, exhaust will be effectively reduced by 40~60% which is up to environmental protection standards.

 

 

Surface treatment

Line-honing                       Moly-inlaid                     Nano                                Nitrided 

 

   

 Oxidized                            Phosphating                  Rail With Teflon              Titanium-plating 

 

Zirconium-plating           Sandblasted                        Chrome-plating  

 

UAP  No.

Engine Type

c.c.

Vehicle Model              Chassis Type

Cyl. No.

Size(d1*h1*a1)/mm

Remark

MITSUBISHI

PR-MI-001

4G42

1187

Lancer 1200
A71  A71V  H71V

4

71 * 2 * 3.3

MD010850

71 * 2 * 3.3

71 * 4 * 3.85

PR-MI-002

4G32

1597

Colt Galant Z 
Sapporo
Lancer Celeste
Mirage Delica(70~)

76.9 * 2 * 3.5
76.9 * 2 * 3.5
76.9 * 4 * 3.85

MD000725  MD004709  MD004739  MD004770  MD005885  MD007251  MD008105  MD106741 

PR-MI-003

4G62

1795

Galant E
Sapporo Lancer

4

80.6 * 2 * 3.5

MD040610 
MD106736

80.6 * 2 * 3.7
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 Mr. Joshua Qiu

Tel: 86-20-38477140
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Company Info

UNITY AUTO PARTS (CHINA) LIMITED [China (Mainland)]


Business Type:Manufacturer
City: Guangzhou
Province/State: Guangdong
Country/Region: China (Mainland)

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