Specialized In Die Casting Service And Parts with Professional Design and Development

102,No.41,Changde Road,Xiaojiejiao,Humen Town,Dongguan,China | +86 769 8151 9985 | sales@hmminghe.com

Technology to reduce friction of automobile engine parts

Publish Time: Author: Site Editor Visit: 1770

As a measure to reduce the friction between automobile engine parts, it can be roughly divided into the following three types.

One is to reduce the actual contact area between components;

The second is to make low shear stress between parts;

The third is to reduce the input load between components.

Reducing the surface roughness of the parts helps to reduce the actual contact between the parts. On the basis of not changing the initial roughness of the surface, the surface of the mating material can be smoothed by sliding, which can further reduce the friction force.

At present, most of the engine cylinder bores are constructed by casting bushings made of gray cast iron into the aluminum alloy cylinder block. The thermal conductivity of cast iron (50W/(m·k)) is lower than that of aluminum (100W/(m·k)), and the thickness of cast iron is several mm. Recently, in order to improve the heat dissipation in the combustion chamber, cast iron sleeves are used instead of cylinder bores, and the cast iron is sprayed. This can improve the sealing of the interface and thin the tube wall, which greatly improves the heat transfer and heat transfer in this part. Heat transfer.

In addition, as a phenomenon unique to thermal spraying, a certain degree of voids are introduced into the film, and the voids are exposed on the surface layer, which can improve the oil retention of the surface of the cylinder bore.

Since it is not necessary to use the honing mesh of the conventional engine cylinder bore to ensure oil retention, the surface of the cylinder bore can be smoothed. In addition to the above-mentioned advantages of good heat transfer characteristics, it can also effectively reduce the friction from the boundary to the mixed lubrication area.

   Regarding the contact between the protrusions on the surface roughness of the parts, the entire surface layer including the protrusions is used as a low shear stress material. As a method to reduce the roughness and reduce the friction alone, solid lubricants can be used.

In particular, when the surface pressure is not so high, a so-called soft coating can be used, that is, granular molybdenum disulfide (MoS2) or graphite, and tetrafluoroethylene as a solid lubricant are dispersed in polyamide resin (PAI) The coating in the medium, or the coating obtained by directly irradiating the MoS2 particles against the workpiece at a high speed. This kind of coating can be applied to the surface layer of piston rod and crankshaft bearing alloy with large contact area in engine parts.

On the other hand, for parts with high surface pressure, we have developed a DLC coating that has the same low friction coefficient as a solid lubricant when it is hard and non-lubricated, so that the same effect can be obtained under lubrication. Coating.

This article will introduce the DLC film that does not contain hydrogen (hydrogen-free DLC film) and the DLC film that contains Si (Si-DLC). The two are very different from the past in terms of surface treatment and design thinking in that the coating itself has no separate characteristics, and the combination of the lubricating oil or the moisture in the lubricating oil can significantly reduce the friction.

  In order to reduce the friction between the piston ring and the cylinder bore, in recent years, CrN film has been used to replace the previous Cr plating or nitriding technology. The thickness of the Cr-plated film is about 100, while the thickness of the CrN film with good wear resistance is only 25, which can reduce the deviation range of the film thickness. As a result, without changing the lower limit of the piston ring tension, and only setting the intermediate value to be smaller, the friction between the piston ring and the cylinder bore can be reduced.

In addition, since the amount of wear of the CrN film is small, the initial curvature of the outer surface of the piston ring can be maintained, and the increased contact range due to wear can be suppressed, which also helps to reduce friction.


Please keep the source and address of this article for reprinting: Technology to reduce friction of automobile engine parts


Minghe Die Casting Company are dedicated to manufacture and provide quality and high performance Casting Parts(metal die casting parts range mainly include Thin-Wall Die Casting,Hot Chamber Die Casting,Cold Chamber Die Casting),Round Service(Die Casting Service,Cnc Machining,Mold Making,Surface Treatment).Any custom Aluminum die casting, magnesium or Zamak/zinc die casting and other castings requirements are welcome to contact us.

ISO90012015 AND ITAF 16949 CASTING COMPANY SHOP

Under the control of ISO9001 and TS 16949,All processes are carried out through hundreds of advanced die casting machines, 5-axis machines, and other facilities, ranging from blasters to Ultra Sonic washing machines.Minghe not only has advanced equipment but also have professional team of experienced engineers,operators and inspectors to make the customer’s design come true.

POWERFUL ALUMINUM DIE CASTING WITH ISO90012015

Contract manufacturer of die castings. Capabilities include cold chamber aluminum die casting parts from 0.15 lbs. to 6 lbs., quick change set up, and machining. Value-added services include polishing, vibrating, deburring, shot blasting, painting, plating, coating, assembly, and tooling. Materials worked with include alloys such as 360, 380, 383, and 413.

PERFECT ZINC DIE CASTING PARTS IN CHINA

Zinc die casting design assistance/concurrent engineering services. Custom manufacturer of precision zinc die castings. Miniature castings, high pressure die castings, multi-slide mold castings, conventional mold castings, unit die and independent die castings and cavity sealed castings can be manufactured. Castings can be manufactured in lengths and widths up to 24 in. in +/-0.0005 in. tolerance.  

ISO 9001 2015 certified manufacturer of die cast magnesium and mold manufacturing

ISO 9001: 2015 certified manufacturer of die cast magnesium, Capabilities include high-pressure magnesium die casting up to 200 ton hot chamber & 3000 ton cold chamber, tooling design, polishing, molding, machining, powder & liquid painting, full QA with CMM capabilities, assembly, packaging & delivery.

Minghe Casting Additional Casting Service-investment casting etc

ITAF16949 certified. Additional Casting Service Include investment casting,sand casting,Gravity Casting, Lost Foam Casting,Centrifugal Casting,Vacuum Casting,Permanent Mold Casting,.Capabilities include EDI, engineering assistance, solid modeling and secondary processing.

Casting Parts Application Case Studies

Casting Industries Parts Case Studies for: Cars, Bikes, Aircraft, Musical instruments, Watercraft, Optical devices, Sensors, Models, Electronic devices, Enclosures, Clocks, Machinery, Engines, Furniture, Jewelry, Jigs, Telecom, Lighting, Medical devices, Photographic devices, Robots, Sculptures, Sound equipment, Sporting equipment, Tooling, Toys and more. 


What Can we help you do next?

∇ Go To Homepage For Die Casting China

Casting Parts-Find out what we have done.

→Ralated Tips About Die Casting Services


By Minghe Die Casting Manufacturer |Categories: Helpful Articles |Material Tags: , , , , , ,Bronze Casting,Casting Video,Company History,Aluminum Die Casting |Comments Off

MingHe Casting Advantage

  • Comprehensive Casting design software and skilled engineer enables sample to be done within 15-25 days
  • Complete set of inspection equipment & quality control makes excellent Die Casting products
  • A fine shipping process and good supplier guarantee we can always deliver Die Casting goods on time
  • From prototypes to end parts, upload your CAD files, fast and professional quote in 1-24 hours
  • Wide-ranging capabilities for designing prototypes or massive manufacturing end use Die Casting parts
  • Advanced Die Casting techniques (180-3000T Machine,Cnc Machining, CMM) process a variety of metal & plastic materials

HelpFul Articles

Forging technology talk

Forging is the collective name of forging and stamping. It is a forming and processing method that u

Innovation and Practice of Hot Metal Pretreatment Technology

Shougang International Engineering Co., Ltd. has a number of patented technologies for molten iron d

Technology to reduce friction of automobile engine parts

As a measure to reduce the friction between automobile engine parts, it can be roughly divided into

Three Keys of Machining Technology of Iron Castings

The tool changes the process to a certain extent. As a tool for needles and brains, if we understand

The Application Of Rapid Prototyping Technology In Investment Casting

Rapid Prototyping (RP) is a high-tech developed in the 1990s. It can quickly turn the design concept

The Application Of Magnesium Alloy CNC Machining Technology For Notebook Computer Shell

At present, 3C products are developing rapidly and competition is fierce. Consumer groups have a par

Automatic Deburring Technology For Die Casting Parts

The process of removing flash burrs on die castings is huge, the labor costs are high, and the labor

Three Kinds Of Magnesium Alloy Injection Molding Technology

Magnesium alloy injection molding technology has become a research hotspot in the industry due to it

20 Kinds Of Metal Machining And Forming Technology Introduction

This article introduces 20 kinds of metal manufacturing methods and their interpretation in detail.D

Mould Heat Treatment Surface Strengthening And Modification Technology

Mold shot peening and action shot peening process is the process of ejecting a large number of proje

The Analysis of Aluminum Alloy Die Casting Key Technology

With the rapid development of modern automobile industry, the application of light metal materials,

High Vacuum/Strength And Toughness Die Casting Technology

High vacuum die-casting technology refers to the liquid metal filling the mold cavity at a very high

Processing Technology Of Porous Thin-Walled Aluminum Alloy Shell

This article mainly elaborates on the process ideas of porous and thin-walled aluminum alloy parts i

Die Casting Technology of Aluminum Alloy Automobile Lower Cylinder Block

In recent years, energy conservation and emission reduction have become the trend of the times, and

Recycled Aluminum Processing Production Technology And Development Direction

The reuse of resources is an important means of building an "environmentally friendly, green" produc

Low Pressure Casting Technology for Aluminum Alloy Cylinder Head of Passenger Car Engine

Based on the comprehensive consideration of cost and mechanical properties, expanding the applicatio

The Application Of Impregnation Technology In Engine Manufacturing

Impregnation treatment of parts made of lightweight materials such as aluminum cylinders can effecti

The Development Trend Of Automobile Castings And Its Manufacturing Technology

Casting is one of the oldest metal forming methods. Approximately 15% to 20% of auto parts are casti

The Forging Technology Of Bow Shackle

The limit working load and scope of application of the shackle are the test and detection of the sha

The Precautions Of Cold Box Technology

Add sulfuric acid to a clean scrubber. If triethylamine is used, the solution must contain 23% sulfu

The Production Technology Of Microalloyed Steel

For this reason, lower carbon content and welding carbon equivalent should be used to focus on the s

The Manufacturing Technology Of Steel Castings

For machine parts requiring higher strength, plasticity and toughness, steel castings are required.

Laser-Arc Hybrid Welding Technology For Ship Use Steel

Welding production efficiency and welding quality directly affect the production cycle, cost and hul

Energy-Saving And Efficiency-Increasing Technology For Heavy-Duty Gears Heat Treatment

Energy-saving and efficiency-enhancing is an important topic in the field of gear heat treatment. It

The Forming Technology Of High-Strength Steel For Automobiles

Automobiles use high-strength steel, which can reduce the thickness of the plate due to its higher s

High-Strength Gray Cast Iron Smelting Technology

This article introduces how to obtain high-strength gray cast iron smelting technology under the con

Steel Grade Identification Black Technology - Spark Identification Method

The method of contacting steel with a high-speed rotating grinding wheel and determining the chemica

Preparation technology of particle-reinforced metal matrix composite by casting method

Metal matrix composites are multiphase materials with a special second phase dispersed in a metal or

The Impurity Removal Technology For Secondary Aluminum Smelting Process

The production process of secondary aluminum alloy can be divided into three stages: pretreatment, s

High Ammonia Nitrogen Wastewater Treatment Technology For Tungsten And Molybdenum Smelting

Tungsten and cobalt are important additive elements for high-performance steel, but a large amount o

The Converter Fast Repairing Technology

The rapid repairing technology is to control the appropriate slag composition, use the high melting

The Development Of Electric Arc Furnace Steelmaking Clean Production Technology

The clean technology includes two aspects: improving the cleanliness of steel and reducing the load