Diesel generator maintenance training diesel engine articles

Diesel generator maintenance training diesel engine articles

As a basic power equipment, diesel engines are widely used in automobiles, tractors, agricultural vehicles, construction machinery, diesel generator sets, ships, and agricultural irrigation and drainage machinery. At present, there are nearly 300 domestic manufacturers of internal combustion engines. The annual output of diesel engines is about 7.2 million sets, of which about 6 million are single-cylinder diesel engines and about 1 million are multi-cylinder diesel engines. The main advantages of the diesel engine are low fuel consumption throughout the entire process, good start and acceleration performance, relatively small volume, high power, good torque characteristics at low speeds, low fuel quality, and low air consumption. The exhaust star is also small: The main disadvantage is that the single machine power is small, noise and vibration are large, and noise elimination and vibration isolation equipment are required. With the rapid development of the diesel engine industry and the continuous advancement of technology in the world, the output of diesel engines continues to increase, and the quality of diesel engines continues to increase, which is increasingly welcomed by users.

In order to enable diesel vehicle drivers, diesel engine maintenance engineers, and diesel generator sets operators to master the basic knowledge, use and maintenance skills of diesel engines as quickly as possible, and improve the use efficiency of diesel engines, the authors have combined their experience in the use, maintenance, and teaching of diesel engines for a long time. The necessary theoretical knowledge, which must be understood and summarized for the use and maintenance of the diesel engine. Digital photography technology is used to realistically capture the shape of the diesel fuel, the components and locations of each system, and maintenance tools. The simple use of special tools on diesel engines introduces the basic structure of the diesel engine, its working principle, and the phenomena of common faults, causes, locations, inspections and maintenance methods, to facilitate readers to quickly master the use and maintenance of diesel engines.

This book introduces the use and maintenance knowledge of diesel generator diesel engine to the reader by listing a large number of fault repair examples. Combined with the typical models, it enriches the practical technical knowledge of diesel engine use, maintenance and repair, and has strong pertinence and practicality. Sex and operability. This book uses the 135 series diesel engine that is widely used in China as a typical model, and provides technical data commonly used in maintenance and repair for the reader to consult in the work.

Explaining in the form of illustrations is an important feature of this book. The book uses a large number of digital photos to avoid lengthy and boring text narratives, and strives to give readers a more intuitive and vivid impression, which helps readers in a shorter period of time. Easily grasp relevant knowledge and operating skills to achieve a more effective learning effect.

Chapter 1 Basic Structure and Working Principle of Diesel Engine

main content:

1 Introduce the classification of diesel engines;

2 Introduce the base valve of diesel muscle;

3 Introduce the working principle of the base currency of the diesel engine;

4 Introduce the precautions for use of the oil refiner.

Section 1 Types and Basic Structure of Diesel Engines

In recent years, with the continuous improvement of the level of science and technology, diesel engines as a basic power source have been widely used in automobiles, tractors, agricultural vehicles, construction machinery, diesel generators, ships and agricultural irrigation and drainage machinery, etc. It is human Progress and social development have made significant contributions.

A diesel engine is an internal combustion engine using diesel fuel as a fuel. The high-temperature and high-pressure air formed by the compression in the cylinder causes the injected misty diesel fuel to expand and do work.

Diesel engine as a kind of power machinery, compared with the gasoline engine, its main advantage is that the combustion rate is low during the whole process because of the high thermal efficiency of the diesel engine. When the operating conditions change, the fuel consumption rate is also low. In addition, the diesel engine has good start and acceleration performance, relatively small volume, large power, good torque characteristics at low rotation speeds, low-quality diesel oil, low air consumption, and small displacement. The main drawbacks of diesel engines are the large noise and vibration, and the need for noise reduction and vibration equipment.

First, the classification of diesel engines

The structure of diesel engine is more, according to its principle can be divided into two kinds of reciprocating piston and rotary piston. At present, the most widely used is the reciprocating piston diesel engine. This book generally refers to this type of diesel engine unless otherwise specified. Its classification is as follows:

1 According to the body structure can be divided into single-cylinder diesel engine and multi-cylinder diesel engine, the column mode is divided into in-line and v-shaped columns.

2 divided into two strokes and four strokes according to the work cycle process.

2 According to the cooling method is divided into air-cooled and water-cooled.

4 According to the intake method is divided into naturally aspirated and pressurized type.

Among them, multi-cylinder diesel engine

3 According to the rated speed is divided into high speed (rated speed above 1000r/min), medium speed (rated speed in the range of 600-1000r/min) and low speed (rated speed below 600r/min).

6 Divided into applications for vehicles, ships, construction machinery, diesel generators, agricultural irrigation and other diesel engines for industrial use.

To be continued. . .