Trade data-driven policy analysis

List of contents of this article:

• 1、Trade data-driven policy analysis What is engine closed cylinder technology
• 3, How much fuel consumption can the closed cylinder technology of the car's engine reduce?

What is the engine cylinder closure technology?

1. The principle of engine cylinder closure is: when the vehicle is running, one or more cylinders are turned off (no ignition and no work), and other cylinders complete the power output. This is a new technology. Although it can effectively reduce the fuel consumption of long-distance driving, it has high technical requirements and needs to improve the working stability of the engine after the cylinder is stopped.

2. Engine closed cylinder technology, also known as variable displacement and cylinder dormancy, is a technology that can stop working certain cylinders in multi-cylinder internal combustion engines, which can save fuel to a certain extent.Cadillac applied it to its own L62 V8-6-4 engine as early as the 1980s.

3. The advantages of closed cylinder technology are extremely obvious, which saves energy and reduces emissions, improves energy utilization, and saves energy. However, the closed cylinder technology needs to close some cylinders in the process of working, so the thermal balance of the engine is broken, and the pressure carried by each cylinder changes, resulting in unstable operation of the engine. The use of closed The cost of cylinder technology will also increase.

4. Ge's technology is also industry-leading, focusing on fuel economy. Theoretically speaking, the fuel consumption should be halved after changing the 4-cylinder to two-cylinder, but the actual situation is related to friction, mechanical loss, maintaining thermal balance and other factors, which will still consume part of the power of the engine. Therefore, the use of closed-cylinder technology to achieve two-cylinder can only reduce fuel consumption by about 15%.

5. The application of closed-cylinder technology can effectively reduce fuel consumption and emissions, and improve the economy and environmental protection of the car. The closed-cylinder technology adopted by the 2006 Buick Junyue 0 engine means that during the driving process, when the speed is low or there is no load, the engine will automatically close three of the cylinders, in order to Reduce fuel consumption and emissions.

What is engine closed cylinder technology

1. Engine closed cylinder technology, also known as variable displacement and cylinder hibernation, is a technology that can stop working certain cylinders in multi-cylinder internal combustion engines, which can save fuel to a certain extent. Oil. Cadillac applied it to its own L62 V8-6-4 engine as early as the 1980s.

2. The principle of engine cylinder closure is: when the vehicle is running, one or several cylinders are closed (no ignition and no work), and other cylinders complete the power output. This is a new technology. Although it can effectively reduce the fuel consumption of long-distance driving, it has high technical requirements and needs to improve the working stability of the engine after the cylinder is stopped.

3. The advantages of closed cylinder technology are extremely obvious, which saves energy and reduces emissions, improves energy utilization, and saves energy. However, the closed cylinder technology needs to close some cylinders in the process of working, so the thermal balance of the engine is broken, and the pressure carried by each cylinder changes, resulting in unstable operation of the engine. The use of closed The cost of cylinder technology will also increase.

4. The principle of engine cylinder closure, that is, when the vehicle is running, one or several cylinders are turned off (no ignition and no work), and other cylinders complete the power output.This is a new technology. Advantages: It can effectively reduce the fuel consumption of long-distance driving. Disadvantages: High technical requirements improve the working stability of the engine after the cylinder is stopped.

5. It is a very advanced 0T engine at present. Among them, the most famous is its unique variable cylinder technology, also known as closed cylinder/cylinder technology. It adopts a unique CAM setting and electronic control system to make the engine burn differently under different conditions, commonly known as Tripower variable valve management technology.

6. The closed cylinder of the engine is usually used in engineering to judge whether the working state of each cylinder is normal or not.

How much fuel consumption can the closed cylinder technology of the car's engine reduce?

1. The three main forms of closed cylinder technology. The first is that the oil stops and the gas does not stop, that is, the cylinder stops injecting fuel into the cylinder, but the valve will still work normally. For example, the early Cadillac L62 engine adopts this technology, but its fuel-saving effect is not very good.

2. At present, the mainstream closed-cylinder technology is realized through valve control technology. The variable valve lift system must be familiar to everyone. By changing the air intake (fuel injection volume), it can better match the high and low load operating conditions of the engine, so as to balance the power output and fuel economy of the engine. Sex.

3. Theoretically speaking, the fuel consumption should be halved after changing the 4-cylinder to two-cylinder, but the actual situation and friction and mechanical lossMaintaining thermal balance and other factors will still consume part of the power of the engine. Therefore, the use of closed-cylinder technology to achieve two cylinders can only reduce fuel consumption by about 15%.

4. Moreover, the engine of Meiruibao also has closed-cylinder technology. The engine will automatically close two cylinders according to the situation to reduce fuel consumption. The comprehensive fuel consumption of the Ministry of Industry and Information Technology of this car is 67L100km, and the actual fuel consumption is about 9L100km. Of course, the fuel consumption of the hybrid system model of the two fields cannot be compared, but for This power-level model is already very good.

5. However, on the new 0LSkyactiv-G gasoline engine, Mazda has also introduced closed-cylinder technology, allowing it to turn off two cylinders under specific working conditions to further reduce fuel consumption.

6. This oneThe motor also adopts a number of leading engine technologies of the same class, such as 35MPa high-pressure fuel direct injection technology, ATM intelligent thermal management system, DVVT dual variable valve timing system and stepless variable displacement oil pump, which provides powerful power with high power and high torque, while bringing ultra-low fuel consumption performance.