搜索
这是描述信息

NEWS

新闻资讯
/
/
-
Use and maintenance of diesel engine

资讯详情

Use and maintenance of diesel engine

  • Categories:Industry News
  • Author:
  • Origin:
  • Time of issue:2021-01-26 08:26
  • Views:

(Summary description)Diesel engine is an engine that uses diesel as fuel. At present, the most commonly used diesel engines in rural areas are single-cylinder, horizontal, water-cooled four-stroke diesel engines. We have already understood the structure and working principle of diesel engines in physics.

Use and maintenance of diesel engine

(Summary description)Diesel engine is an engine that uses diesel as fuel. At present, the most commonly used diesel engines in rural areas are single-cylinder, horizontal, water-cooled four-stroke diesel engines. We have already understood the structure and working principle of diesel engines in physics.

  • Categories:Industry News
  • Author:
  • Origin:
  • Time of issue:2021-01-26 08:26
  • Views:
Information
  1. Diesel engine
  Diesel engine is an engine that uses diesel as fuel. At present, the most commonly used diesel engines in rural areas are single-cylinder, horizontal, water-cooled four-stroke diesel engines. We have already understood the structure and working principle of diesel engines in physics. This section only briefly introduces the correct use, maintenance, and simple fault analysis and troubleshooting methods of diesel engines.
  The correct use of diesel engine
  1. Diesel engine running-in: a new or overhauled diesel engine must be run-in to work at full load before it is officially used. Otherwise, it will accelerate the wear of parts and make the diesel engine unable to exert the maximum effective power and shorten the service life of the machine. , The running-in of the diesel engine is divided into three stages:
  (1) Dry running: Run the diesel engine at low speed for half an hour, then stop it to check for abnormalities and bolt tightening. Then run at medium speed for 2 hours, and finally run at rated speed for 30 minutes. If there is any abnormality, stop and make adjustments in time.
  (2) Light load run-in: run at 1/3 load for 10 hours, then run at 1/2 load for 23 hours, and finally run at 2/3 load for 10 hours.
  (3) Running at full load for 10 hours, the total running-in time is about 50 hours. Before starting to run-in, check the connection of each part of the diesel engine, whether enough diesel, engine oil, and cooling water are added as required, and observe whether there is oil leakage, water leakage, or leakage. The phenomenon of qi. Rotate the machine with the crank to check the oil supply. During the running-in process, pay attention to the sound of the machine and observe whether the oil pressure and water temperature are normal. After the running-in is completed, release the oil while it is hot, clean the oil pan, crankcase, and oil filter, and replace with new oil. Check whether the main bolts are loose, check the valve clearance, and readjust if necessary.
  2. Diesel engine maintenance: After the diesel engine has been working for a period of time, the parts are worn out. Loose connections and other reasons have gradually deteriorated the technical status of each department. If serious maintenance is not carried out on time, a long time will cause power drop, fuel consumption increase, abnormal sound, and even serious accidents. In order to prolong the service life of the diesel engine and make it work in good technical condition, it is necessary to do a good job of technical maintenance work carefully, not just use it without maintenance, or even make the machine work with illness. Technical maintenance includes regular maintenance and regular maintenance. Regular maintenance is to clean the exterior, check the fastening of connecting rod parts, the technical status of other parts, lubricate the lubrication points, add enough oil and water. Regular maintenance is carried out after a certain working time. Generally divided into maintenance No. 1, 3, 4. The maintenance of No. 1 higher than the maintenance includes all the contents of No. 1 lower maintenance, but also add cleaning, lubrication, tightening and adjustment items. If necessary, replace the expired or expired The maintenance period of the damaged parts is calculated based on actual working hours, and some calculated based on the actual oil volume of the diesel engine. In actual work, it should be strictly implemented in accordance with the requirements in the manual.
  3. Winter use of diesel engine: The temperature in winter is very low, it is easy to block the oil circuit of the diesel engine, the cooling water is frozen, and it is not easy to start. Therefore, the following issues should be paid attention to when using diesel engines in winter:
  (1) Use special winter oil, and preheat the oil before adding it to the machine before driving. When preheating the engine oil, it is not allowed to burn it directly with a strong fire. Instead, place the barrel of engine oil in water and use fire to heat the water and indirectly heat the engine oil.
  (2) Use diesel for winter to prevent the diesel from being mixed with moisture and causing the diesel to freeze.
  (3) To prevent the cooling water from freezing after parking, the cooling water should be discharged when the water temperature drops to 40°C.
  4. Safe use of diesel engine: Safe use of diesel engine can ensure that people are not injured and the machine can work normally.
  (1) It is strictly forbidden to operate by people who do not understand or are not familiar with the diesel engine. When working, they must concentrate their energy, clear out possible accidents at any time, and cannot leave the job without authorization.
  (2) It is strictly forbidden to use unqualified diesel, engine oil, and cooling water, and keep the diesel, engine oil, and cooling water clean.
  (3) When the diesel engine is working, the exposed transmission belts, gears, and transmission shafts should be protected to avoid personal injury.
  (4) Before starting, clean up other tools and remind the people present before starting.
  (5) When the diesel engine is working, it is necessary to always pay attention to whether it is running well, and it is not allowed to overload the machine for a long time. Lubrication, adjustment, and maintenance work are not allowed during machine work.
  (6) The work site must have complete and effective fire protection equipment.
  2. Common faults and troubleshooting methods of diesel engines
  Insufficient pressure in the cylinder and difficulty in starting the main symptoms are: burning oil, blue smoke from the exhaust, increased oil consumption, a large amount of smoke-like gas discharged from the crankcase vent, and the horsepower of the diesel engine decreased. The main reasons are:
  1. The cylinder liner, piston ring, and piston are worn out, and air leaks during the compression stroke. Insufficient compression force in the cylinder makes it difficult to start. Individual parts or complete parts should be replaced.
  2. The piston ring is stuck in the ring groove due to carbon deposits and glue. Most of them are caused by incomplete diesel combustion, burning of engine oil, and poor quality of engine oil. The carbon deposits on the cylinders, pistons, and piston rings can be removed in time, and qualified engine oil and diesel can be selected.
  3. The opening of the piston ring is in a straight line. This may be an installation error, or the piston ring may automatically shift due to the wear of the cylinder liner. The piston rings should be reinstalled so that the openings of the rings are staggered.
  4. If the valve is not closed tightly, the valve clearance should be readjusted, the valve and valve seat should be replaced, or grinding should be carried out.

Scan the QR code to read on your phone

Relevant news

08-03

2023

Applicable scope of Diesel generator

Diesel generator has a wide range of applications and can provide stable power supply in various scenarios. The following is the main scope of application of Diesel generator: Emergency standby power supply: Diesel generator is often used as emergency standby power supply, especially in case of power failure or grid failure. It can provide stable power supply for key locations such as hospitals, airports, banks, data centers, and communication base stations, ensuring the normal operation of equipment and systems. Construction sites: In construction sites and construction sites, Diesel generator can provide power for temporary electricity and support the operation of construction equipment and tools. Industrial use: Diesel generator is widely used in the industrial field, which can provide stable power supply for factories, manufacturing industries, mines, etc., and support production and operation. Agriculture: Diesel generator can be used in rural areas to provide power for farmers, such as irrigation systems, agricultural machinery, etc. Remote area: In remote areas or places without grid coverage, Diesel generator is a common power solution that can provide reliable power supply. Ship and marine power generation: Diesel generator are widely used in ships and offshore platforms to provide power demand for ships. Mobile and standby power generation equipment: Diesel generator can be used for mobile power generation equipment, such as generator locomotive, generator ship, etc. At the same time, it can also be used as backup power generation equipment for maintenance and emergency situations of power companies and important facilities. The reason why Diesel generator are widely used in so many scenarios is that they have the following advantages: High reliability, fast start-up, suitable for emergency situations and instantaneous load demands. Fuel is universal and easy to obtain. The mechanical structure is simple, and maintenance and upkeep are relatively easy. It can provide a large power output range and adapt to different scale electricity demands. However, Diesel generator also has some shortcomings, such as loud noise, emission pollution, etc. Therefore, other types of power generation equipment may need to be considered in some specific environments.

08-03

2023

Internal structure of Diesel generator

The internal structure of Diesel generator usually includes the following main components: Diesel engine (internal combustion engine): It is the core part of the generator set, used to convert the energy generated by fuel combustion into mechanical energy. It includes components such as cylinders, pistons, crankshafts, connecting rods, etc. Crankcase: used to install the crankshaft and connecting rods, providing support and lubrication for the engine. Piston ring: A circular component located on the piston, used to seal the gap between the piston and the cylinder, preventing high-pressure gas leakage in the combustion chamber. Cylinder and cylinder head: The cylinder is the place where the internal combustion process occurs in the engine, and the cylinder head is used to seal the upper part of the cylinder. Valve and valve drive mechanism: responsible for controlling the intake and exhaust processes, ensuring the inflow of fuel mixture and the discharge of exhaust gases. Fuel system: includes components such as fuel tank, fuel filter, fuel pump, and fuel injector, used to supply fuel to the combustion chamber for combustion. Air intake system: including air filters and intake ducts, used to introduce air into the combustion chamber. Exhaust system: including exhaust pipes and mufflers, used to exhaust the exhaust gas generated after combustion. Cooling system: including cooling water tank, water pump, radiator, etc., used to reduce engine temperature and maintain its normal operating temperature. Lubrication system: including oil tank, oil pump, and oil filter, used to provide lubrication for the engine and reduce friction and wear of components. Starting system: used to start the engine, usually including a starting motor and starting circuit. Generator: The generator generates electrical energy by turning the engine. Control panel and control system: used to monitor and control the operating status of the generator set, including parameters such as voltage, current, frequency, temperature, etc. These are the main components of Diesel generator, and different types and specifications of Diesel generator may have some differences. Understanding the internal structure of a generator helps to better understand its working principle and maintenance methods.

08-03

2023

Several Precautions for Summer Maintenance of Diesel Engines

Summer is a hot season for diesel engine operation. In order to ensure the performance and lifespan of the diesel engine, the following are some precautions for summer maintenance: Cooling system inspection: Ensure that the coolant level in the cooling system is sufficient and the coolant concentration is appropriate. At the same time, check whether the water pump, radiator and cooling fan of the cooling system operate normally, and clean the surface of the radiator to prevent the blockage of dust and dirt. Air filter maintenance: Clean or replace the air filter to ensure that the engine receives sufficient and clean air. In summer, there is a lot of dust in the air, which can easily block the air filter, leading to insufficient air supply and affecting combustion efficiency. Fuel quality: Use high-quality fuel and avoid using inferior or unknown sources of fuel. Poor quality fuel is prone to impurities, leading to fuel injector blockage and incomplete combustion, which affects engine performance. Lubrication system inspection: Ensure that the oil level is appropriate and the oil quality is good. Under high temperatures, the lubrication needs of the engine are higher, so it is necessary to regularly check the concentration and cleanliness of the engine oil, and replace the engine oil and filter in a timely manner. Battery maintenance: High temperatures in summer can easily cause battery moisture to evaporate. Check the battery electrolyte level and add distilled water if necessary. Keep battery terminals clean to prevent corrosion. Transmission system inspection: Regularly check the working status of the clutch, transmission belt, and gearbox to ensure smooth operation of the transmission system. Ventilation of engine room: ensure good ventilation of the engine room, install Sun visor or shelter to avoid direct sunlight and reduce the internal temperature of the engine room. Regular maintenance: Summer is a hot season, and maintenance of diesel engines is more important. Regularly conduct comprehensive inspections and maintenance to ensure timely repair of problems and prevent the occurrence of faults. In summary, summer maintenance is crucial for the performance and lifespan of diesel engines. Following the above precautions and conducting regular inspections and maintenance can ensure stable operation of diesel engines under high temperature conditions and improve their service life. If you are not familiar with the maintenance of diesel engines, it is best to hire professional technical personnel for inspection and maintenance.

Previous page
1
2
23

CAMEO

 

Address: No. 57, Congyuan Road, caijiagang Town, Beibei District, Chongqing
E-mail:
caoshengyang@senci.com

FEEDBACK

Username used for comment:
客户留言
Description:
验证码

COPYRIGHT © 2021 CCPMC  ALL RIGHTS RESERVED. 渝ICP备2021001735号-1