CN205172743U

CN205172743U - Increase wet liner on nitrogen treatment layer

Info

Publication number: CN205172743U
Application number: CN201520732838.XU
Authority: CN
Inventors: 阳芳; 杨磊; 黄中伟; 张�成; 陶进; 殷刚; 张蕾; 刘强
Original assignee: Dongfeng Cummins Engine Co Ltd
Current assignee: Dongfeng Cummins Engine Co Ltd
Priority date: 2015-09-21
Filing date: 2015-09-21
Publication date: 2016-04-20
Anticipated expiration: 2025-09-21

Abstract

The utility model provides an increase wet liner on nitrogen treatment layer, including the cylinder jacket, there is the nitrogen treatment layer to cover at the water jacket position in the cylinder jacket outside, the axial length L1=90~150mm on nitrogen treatment layer, the 0.01~0.10mm of thickness on nitrogen treatment layer. Cylinder jacket diameter D=100~120mm, 1 length L=190~290mm of cylinder jacket, water jacket the wall thickness T=4~10mm of cylinder jacket. The utility model discloses a there is the cover of nitrogen treatment layer at the water jacket position, and the toughness of matrix is high, can reduce the probability of surface crack's formation and extension, and anti wear resistance is good, and corrosion resistance is good, and the surface is fine and close, and the composition is stable, is difficult for taking place the reaction with materials such as acid, alkali, salt, can improve the ability of losing in the corrosion -resistant and anti cave of cylinder jacket effectively. The reliability verification has been passed through on 8~10 liters of diesel engines. Can be applied to various engines, including diesel engine, gasoline engine and gaseous engine etc..

Description

A kind of wet liner increasing nitriding treatment layer

Technical field

The utility model relates to a kind of wet liner increasing nitriding treatment layer, belongs to motor car engine/ram system regions.

Background technique

At present, motor wet liner is directly installed in engine cylinder (or being referred to as body), the to-and-fro motion of engine piston and Piston volume tube is supported inside cylinder liner, help combustion system of engine that thermal energy is become mechanical energy, directly contact with cooling liquid outside cylinder liner, by unnecessary thermal energy transfer to engine-cooling system.Major part terminal use can use standard cooling liquid according to the technical requirements of motor, fraction terminal use more optionally uses nonstandard cooling liquid, or even ordinary water, outside causing the cylinder liner that contacts with cooling liquid thus, cavitation pitting damages, time serious, cavitation pitting hole causes cylinder liner to be bored a hole, make cooling liquid seepage enter engine lubrication system, more serious power failure occurs.

Summary of the invention

The purpose of this utility model is to solve the deficiencies in the prior art, and a kind of wet liner increasing nitriding treatment layer proposed, effectively improve the ability of the corrosion-resistant and anti-cavitation pitting of cylinder liner.

The technical solution of the utility model: a kind of wet liner increasing nitriding treatment layer of the present utility model comprises cylinder liner, water jacket position outside cylinder liner has nitriding treatment layer to cover, axial length L 1=90 ~ the 150mm of nitriding treatment layer, the thickness of nitriding treatment layer is 0.01 ~ 0.10mm.

Described cylinder liner diameter D=100 ~ 120mm, cylinder jacket length L=190 ~ 290mm, the water jacket wall thickness T=4 ~ 10mm of cylinder liner.

The utility model technique effect: water jacket position of the present utility model has nitriding treatment layer to cover, the toughness of matrix is high, the formation of surface crack and the probability of expansion can be reduced, wear resistance is good, good corrosion resistance, surface compact, ingredient stability, not easily react with materials such as acid, alkali, salt, effectively can improve the ability of the corrosion-resistant and anti-cavitation pitting of cylinder liner.8 ~ 10 liters of diesel engines have passed reliability demonstration.Can be applicable to various motor, comprise diesel engine, petrol engine and gas engine etc.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model.

Embodiment

Below in conjunction with embodiment, the utility model is further described.

That a kind of water jacket position of wet liner outside cylinder liner 1 increasing nitriding treatment layer of the present utility model has nitriding treatment layer 2 to cover shown in Fig. 1, the axial length L 1=90 ~ 150mm of nitriding treatment layer 2, the thickness 0.01 ~ 0.10mm of nitriding treatment layer 2.

Described cylinder liner 1 diameter D=100 ~ 120mm, cylinder liner 1 length L=190 ~ 290mm, the water jacket wall thickness T=4 ~ 10mm of cylinder liner 1.

Cylinder liner 1 in embodiment is wet liner, i.e. the to-and-fro motion of inner side supporting engine piston and Piston volume tube, and outer upper directly contacts with cooling liquid, is arranged in engine cylinder.

The utility model is applied on 8 ~ 10 liters of diesel engines.

Core of the present utility model increases nitriding treatment outside the water jacket of wet liner, improves the ability of the corrosion-resistant and anti-cavitation pitting of cylinder liner.Therefore, every nitriding treatment that to increase outside the water jacket of wet liner, all belongs to protection domain of the present utility model.

Claims

1. one kind increases the wet liner of nitriding treatment layer, comprise cylinder liner 1, it is characterized in that: have nitriding treatment layer (2) to cover at the water jacket position in cylinder liner (1) outside, axial length L 1=90 ~ the 150mm of nitriding treatment layer (2), the thickness of nitriding treatment layer (2) is 0.01 ~ 0.10mm; Described cylinder liner (1) diameter D=100 ~ 120mm, cylinder liner (1) length L=190 ~ 290mm, the water jacket wall thickness T=4 ~ 10mm of cylinder liner (1).