202012-21

The sealing mechanism of the gas ring

The piston ring has a notch and is not a circular ring in the free state. Its outer dimension is larger than the inner diameter of the cylinder. Therefore, after it is installed in the cylinder together with the piston, it generates elastic force and clings to the cylinder wall.

202012-18

V8 engine-difference in crankshaft

There are two different types of V8 engines depending on the crankshaft.

202012-14

Crankshaft wear reduction measures

When assembling the crankshaft of a diesel engine, every step must be precise. Before installing the crankshaft, clean the crankshaft and clean the crankshaft oil passage with high-pressure air.

202012-10

How will the powertrain advance through the comprehensive transformation of the automotive industry?

It is understood that with the continuous improvement of automobile energy-saving technology, the current average fuel consumption of new passenger cars in China continues to decline, and it is close to the target value of 5L per 100 kilometers in 2020. At present, a large number of high compression ratios (12-13) + Miller cycle have been applied.

202012-08

Dual Variable Valve Timing

D-VVT engine is the continuation and development of VVT, it solves the technical problems that VVT engine cannot overcome.

202012-02

The role and type of oil ring

The function of the oil ring is to evenly distribute the lubricating oil splashing on the cylinder wall when the piston moves up, which is beneficial to the lubrication of the piston, piston ring and cylinder wall;

202011-30

Piston blank forming method

The most common production method for aluminum piston blanks is the metal mold gravity casting method.

202011-25

The U.S. develops a rapid test method to evaluate the corrosion of cars protected by graphene

For automobiles, airplanes and ships, trace graphene barriers can provide decades of protection against oxygen corrosion, but how to evaluate its effectiveness has always been a challenge.

202011-23

Measurement of crankshaft clearance

The measurement of crankshaft clearance includes axial clearance measurement and main bearing radial clearance measurement.

202011-18

Piston and connecting rod assembly

Assembly operation: Apply oil to the piston pin, piston pin seat hole, and connecting rod small end bushing..

202011-16

Cylinder head assembly

Assemble the cylinder head, any repairman and driver can do it. But why is it found that the cylinder head is deformed or...

202011-11

The problem of automobile information security is becoming more serious

According to the 2020 "Automotive Information Security Report" previously released by Upstream Security, from 2016 to January 2020..

202011-09

Precautions for the use of chain guides

The chain guide has ultra-high molecular weight (molecular weight is usually over 1.5 million) polyethylene varieties.

202011-04

Piston and piston ring fault diagnosis and troubleshooting

The fit between the piston and the cylinder wall clearance is directly related to the engine's maintenance quality and service life.

202011-02

Crankshaft inspection methods and requirements of engineering cranes

Crankshaft maintenance methods and requirements of engineering cranes:

202010-28

About crankshaft fracture and shot peening

The crankshaft, whether it is an automobile engine crankshaft, a marine engine crankshaft or an industrial pump crankshaft..

202010-26

27 days countdown to bauma CHINA 2020 Exhibition

orged steel crankshaft promotion catalog

202010-21

VVT variable valve timing function and advantages

VVT is the English abbreviation of Variable Valve Timing.

202010-19

Engine cylinder bore selection

When choosing a cylinder, we can choose from the size of the force that is the choice of cylinder diameter.

202010-15

What are the characteristics of the piston structure design

In order to maintain a relatively uniform and suitable gap between the piston and the cylinder wall at normal operating temperature and ensure the normal operation of the piston, the piston structure design usually has the following characteristics.

202010-13

U.S. research and development of self-healing materials can be used in aircraft and ground vehicles

According to reports, researchers from the US Army and Texas A&M University have developed a new type of polymer material in a study aimed at improving future unmanned aircraft and robotic cars, which can deform and Self-healing automatically.

202010-10

Crankshaft connecting rod mechanism and valve train damage reference standard

The fixing screw holes of the external parts of the cylinder block are damaged. ...

202009-30

Static recrystallization behavior of non-quenched and tempered steel C38N2 for crankshaft

The crankshaft steel C38N2 is a new type of microalloyed non-quenched and tempered steel, which replaces quenched and tempered steel to manufacture Renault engine crankshafts.

202009-27

Popularization of China-Europe Express Lines

China Railway Express (CR express) refers to a containerized international rail intermodal train that runs between China and Europe and countries along the Belt and Road in accordance with fixed train numbers, routes, schedules and full operating hours

202009-23

What are the abnormal noises of the piston ring

The abnormal noise in the engine cylinder can be summarized as the sound of piston knocking, piston pin knocking, piston top hitting the cylinder head, piston top hitting, piston ring knocking, valve knocking, and cylinder knocking.