A brief talk about the internal combustion engine

Today's engines are mainly internal combustion models that convert fuel combustion thermal energy into mechanical energy. The internal combustion engine is widely used due to its small size and weight, strong and stable power, and good economy after improvement. However, it has disadvantages such as a precise and complex structure, high failure probability, and environmental pollution. Before the internal combustion engine, the steam engine was widely used but had problems like a huge mechanism and low thermal efficiency. Over the past 100 years, various internal combustion engines have been invented, with different piston movement modes, fuel uses, ignition modes, and cylinder arrangements. The supercharged engine is becoming more widespread. The main internal structure of the internal combustion engine includes the crank connecting rod mechanism, gas distribution mechanism, fuel supply system, cooling system, lubrication system, ignition system, and starting system. The power of the engine comes from the piston's reciprocating motion, and in a four - stroke engine, only the power stroke generates power. The internal combustion engine has been used for over 100 years, promoting equipment mechanization, automation, and the development of vehicle and ship power devices, and changing the way humans use and convert energy.

Automechanika Shanghai 2024

Automechanika Shanghai 2024, celebrating its 20th anniversary, will be held from December 2 to 5 at the National Exhibition and Convention Center in Shanghai. The event, covering 350,000 square meters across 14 halls, is expected to attract over 6,700 exhibitors and 17 pavilions from overseas. Focusing on "Innovation, Integration, and Sustainable Development," the exhibition showcases technological advancements and industry trends, emphasizing global opportunities in new energy and intelligent networking, and promoting green sustainability.

Global Seaborne Trade Is Recovering, But There Are Still Many Challenges

The United Nations Trade and Development Organization's 2024 Maritime Review report released on Tuesday showed that global maritime trade grew by 2.4% in 2023, recovering from the contraction in 2022. However, despite the signs of recovery, the future growth of maritime transport remains fragile and there are still many risks and uncertainties.

Regarding the composition of engine oil formula and the role of viscosity index improver

Generally speaking, different grades of internal combustion engine engine oils are formulated by combining agents to achieve the corresponding specification grades, suitable base oils, viscosity index improver and other auxiliary additives.

United Nations Trade and Development Organization: Global trade trends improved in the fir......

UNCTAD's forecast report notes that trade in goods is expected to increase by about $250 billion in the first half of 2024 and $100 billion in services compared to the second half of 2023, driven by strong trade dynamics in United States and developing countries, especially large developing economies in Asia.

China has been Africa's largest trading partner for 15 consecutive years

Xinhua News Agency, Beijing, August 29 (reporter Chen Weiwei) The Report on the Development of the the Belt and Road Jointly Constructed by China and African Countries was released on the 29th of the 2024 edition of the Blue Book. The report shows that China has maintained its position as Africa's largest trading partner for 15 consecutive years, and the proportion of China Africa trade volume to Africa's overall foreign trade volume has steadily increased.

China International Chemical Industry Exhibition (ICIF China 2024)

Founded in 1992, ICIF 2024 is organized by three leading organizations in the chemical industry: China Petroleum and Chemical Industry Federation, China Council for the Promotion of International Trade (CCPIT)