cylinder head introduce

The cylinder head is installed on top of the cylinder block, sealing the cylinder from the top and forming the combustion chamber. It often comes into contact with high-temperature and high-pressure gas, so it bears a large thermal and mechanical load. The cylinder head of a water-cooled engine is equipped with a cooling water jacket, and the cooling water hole on the lower end face of the cylinder head is connected to the cooling water hole of the cylinder block. Circulating water is used to cool the high-temperature parts of the combustion chamber. The cylinder head is also equipped with inlet and exhaust valve seats, valve guide holes, and is used to install inlet and exhaust valves, There are also intake and exhaust channels. The cylinder head of gasoline engines is equipped with holes for installing spark plugs, while the cylinder head of diesel engines is equipped with holes for installing fuel injectors. The cylinder head of overhead camshaft engines is also equipped with camshaft bearing holes for installing camshafts. The cylinder head is generally made of gray cast iron or alloy cast iron, and aluminum alloy has good thermal conductivity, which is conducive to improving compression ratio. The cylinder head is an integral part of the combustion chamber, The shape of the combustion chamber has a significant impact on the operation of the engine. Due to the different combustion methods of gasoline and diesel engines, there is a significant difference in the parts that make up the combustion chamber on the cylinder head. The combustion chamber of gasoline engines is mainly on the cylinder head, while the combustion chamber of diesel engines is mainly on the concave pit at the top of the piston. 1. The cylinder head bolts should be tightened evenly and the fuel supply time should be adjusted correctly. 2. Soft water should be added to the water tank, And try to change water as little as possible. 3. The engine should avoid working under overload for a long time. 4. When the engine is working and the water tank occasionally runs out of water, do not immediately turn off the engine. Instead, slowly add water at low speed. Do not add cold water after the engine heats up. After parking, wait for the water temperature to below 40 ℃ before adding water. In cold winter, do not add water immediately when starting, Instead, heat the water first and add boiling water. During assembly, check whether each cooling water hole is unobstructed. Regularly clean the cooling system with alkaline solution and promptly remove scale and oil stains [1])

The installation steps for the cylinder head are as follows:

The installation steps of the cylinder head are as follows: The installation of the cylinder head should be carried out in the order of disassembly first and then installation, and the following issues should be noted during the assembly process: 01 Before installing the cylinder head, the crankshaft should be turned to the top dead center position of the first cylinder. 02 When installing the cylinder head gasket, the side marked with the part number must be visible. 03 Replace the cylinder head fastening bolts, Do not reuse bolts that have been tightened according to the tightening torque. 04 Tighten the cylinder head bolts to a torque of 40N · m in the sequence shown in the following figure, and then use a wrench to tighten 180 °. Tighten the cylinder head bolts to a torque of 40N · m in the sequence shown in the figure. 05 Install the timing belt (adjust the valve timing phase), install the valve cover. 06 Adjust the throttle lock, Add new coolant. 07 Perform throttle control unit matching. 08 Query fault codes. Removing the electronic component plug of the electronic control unit will cause fault storage. Query fault codes and delete them if necessary. 09 Pay attention to the tightening torque of the main component bolts. The tightening torque of the front exhaust pipe and exhaust manifold fastening bolts is 20N · m, and the tightening torque of the fastening bolt between the intake manifold bracket and the engine is 20N · m, The tightening torque of the fastening bolts between the intake manifold bracket and intake manifold is 30N · m

Cheetah CT5 introduce

Anhui Leopard Automobile Co., Ltd. was established on March 28, 2005. It is the strategic core enterprise of Hunan Changfeng Group (Leopard Automobile) in Chuzhou, and also the second largest vehicle production base after the Changsha headquarters and Yongzhou base. The company currently covers an area of about 466.3 acres, including a construction area of 60000 square meters, a registered capital of 600 million yuan, and 860 employees, including 258 people with college degrees or above, and 260 people with various professional qualifications, There are a total of 57 personnel with intermediate or above professional titles, including 50 technical line engineers and above. Currently, the total assets are about 520 million yuan, with a debt ratio of 46%. Since its establishment, the company has invested a huge amount of money in technological transformation of its original production scale, and has formed an annual production capacity of 10000 units per shift. The main products are the three series of pickup trucks and SUV series, including the Flybell, Flyer, and CT5, covering three levels: low, medium, and high, Capable of industrialization in the research and development, manufacturing, quality assurance, and marketing of pickup trucks and SUVs The overall relocation, upgrading and renovation project of the company was signed on February 22, 2013, and received approval from the Ministry of Industry and Information Technology of China. The project has a total investment of 2921.74 million yuan, covers an area of 985 acres, a total construction area of 193446 square meters, a production value of 9.47 billion yuan, a profit of 758 million yuan, and a tax payment of 330 million yuan. In April 2013, The project will commence construction. It is planned to complete the design, construction, procurement, and manufacturing of equipment and fixtures for the process, civil engineering, and public works within 18 months. Trial production will begin in September 2014, and production will reach the standard in January 2016 In 2013, the company achieved a total output value of 420 million yuan, and in the first quarter of 2014, it achieved a output value of 220 million yuan, a year-on-year increase of 8.5%