A glimpse of the hottest air-cooled engine patents

A glimpse of air-cooled engine patents

reading tips: unlike many other fields, China's domestic patent deployment capacity in the field of engine R & D and manufacturing is higher than that of other countries. Not only does the patent application cover a wide range of technical fields, but also its technical strength is not weak. However, it cannot be ignored that although the number of engine patent applications of foreign enterprises, especially Japanese enterprises, in China is small, the benefits of their patented technology are great. For Chinese enterprises, they should actively develop their own brand and patented engine products, and strive to obtain sufficient returns on intellectual property investment

there are a large number of enterprises and engineers engaged in engine R & D and manufacturing in China. China's domestic patent deployment capacity in this field is also higher than that of any other country

in the Chinese Patent Gazette, the number of air-cooled engine patents applied by Chinese inventors far exceeds that of foreign inventors. Almost all the early patent documents of air-cooled engines came from domestic applicants. In all patent documents, patent applications submitted by individuals account for more than half

for example, the CN document of Zhang Han relates to an air-cooled impeller rotor internal combustion engine. It is a four cycle internal combustion engine. Its basic structure includes four blades for air cooling, two mutually sealed left and right air chambers composed of rotors, four working parts composed of four blades - intake and compression of the left air chamber, work and exhaust of the right air chamber, one-way valve for compression displacement on the upper part, exhaust port on the lower part, etc. During work, the four parts of the left and right air chambers work at the same time  intake, compression, work and exhaust  and the four blades carry out four cycle internal combustion work respectively. Once the rotor rotates, each blade does work once, a total of four times. The fuel gasoline or diesel oil, liquefied gas, etc. mixed with air enters the left air chamber. After compression, it is pressed into the right air chamber through the check valve through the upper compressed air duct. The ignition works, and the exhaust gas is discharged out of the engine from the exhaust port for four cycle internal combustion

Zhu Jingbang's CN document relates to a vane piston rotor engine. Among them, the spark plug is fixed in the center of the concave combustion chamber on the rotor. The spark plug is loaded and unloaded from the exhaust port. The two power distributors supply power to the two spark plugs respectively. The power distributor, carburetor and oil pump use finalized products, and the cooling system can use air cooling or water cooling. Cn of yisanquan Document No. 5 relates to an air-cooled split cylinder rotor internal combustion engine. The utility model comprises a circular cylinder body, a rotor arranged therein, a cylinder head and a sealing device thereof. Its circular cylinder body and internal rotor form two cylinders with different volumes, so that the suction, compression, expansion and exhaust become two cylinders synchronously in the same cylinder. At the same time, the compression sealing valve and expansion sealing valve are set on the cylinder body. His cn Document No. 0 relates to a rotary piston internal combustion engine, especially an air-cooled split cylinder rotor internal combustion engine, which comprises a circular cylinder body and a rotor, a cylinder head and a sealing device arranged therein. In addition, CN of Liu Yijun et al Document No. 8 relates to an air-cooled integrated automotive electronic distributor. It installs the ignition coil and control circuit in the distributor housing. Hansen, who installs the fan in the distributor housing, suggests that you pull the oiler shaft in the oil tank at this time, and open an air inlet and outlet on the distributor housing. An insulating body is inlaid between the two shells at the connection between the distributor and the engine. The shape of the distributor shell is made into a heat sink structure with the advantages of low VOC, excellent weather resistance and high surface hardness. It solves the problem that the control circuit in the integrated electronic distributor is affected by temperature. Li Xiangxi's cn Document No. 2 relates to a motorcycle water-cooled engine. The cylinder head and the cylinder body are respectively equipped with circulating water jackets, and there are still air-cooled fins outside. The cylinder head and the cylinder body are respectively equipped with circulating water inlet and outlet joints. When the cylinder head and the cylinder body are closely connected, the two circulating water jackets are connected. Qiu Huanzhang's cn Document No. 3 relates to an air-cooled engine cooling device

the individual application covers a wide range of technical fields, and the technical strength is not weak. For example, Wang Pei's CN production requires a large number of reaction kettles that can be opened Document No. 4 relates to an air-cooled gasoline engine for vehicles. Cn of Xiao Henglin et al Document x relates to a small air-cooled engine. Mei Baoan's cn Document No. 1 relates to an air-cooled energy-efficient engine. Lu Yunming's cn Document No. 4 relates to an air-cooled engine cylinder head. Zhouliangjun's cn Document x relates to an efficient internal combustion engine and its combustion method. Han Cong's cn Document No. 7 relates to a dual cylinder opposed air-cooled four stroke gasoline engine air-fuel mixture supply system, which adopts a single carburetor structure, and adopts a power enrichment device and an acceleration enrichment device in the carburetor; CN. Document No. 2 relates to a dual cylinder opposed air-cooled four stroke gasoline engine air-fuel mixture supply device; CN. Document No. 0 refers to a double cylinder opposed air-cooled four stroke steam, but the current national investment approach is to disperse the auxiliary intake pipe of oil engine. Guyongqiang's cn Document No. 9 relates to a piston opposed engine without skirt

the number of patent applications for air-cooled engines submitted by legal entities in China is also higher than that of foreign enterprises, and the technical level is also very high. For example, cn Document No. 5 relates to a reciprocating plug type vertical four cylinder four stroke air-cooled engine. It adopts a building block structure. The cylinder liner and cylinder head are single bodies, with a cylinder diameter of 102 mm and a stroke of 120 mm. It adopts a spiral inlet and a W-shaped combustion chamber, which has the advantages of high speed, high power and large torque. Cn of Hunan Chenzhou diesel engine factory Document No. 1 relates to a cylinder tilting diesel engine. On the basis of single cylinder, inclined and four stroke diesel engine, it increases the crank radius, improves the connection key structure, and increases the volume of lubricating oil storage chamber. Cn of the factory Document No. 9 relates to an oil leakage prevention device for a single cylinder internal combustion engine. At least two negative pressure valves are installed on the valve cover, cylinder head and crankcase to prevent the negative pressure valve sheet from adhering to the negative pressure valve cover. The negative pressure valve cover is made into an inner empty type. The CN document of Hunan Shaoyang Polytechnic College relates to a centrifugal cooling fan for small air-cooled engines, which is composed of impellers and blades. Due to the matching optimization, it can increase the fan air volume by 20% to 30%, increase the air pressure by 10% to 15%, reduce the power consumption by 18% to 25%, reduce the noise by 2 to 3 dB, reduce the thermal load of the diesel engine, and improve the mechanical efficiency, reliability and durability of the diesel engine. In addition, cn Document No. 4 relates to an air guide device of an air-cooled diesel engine. Cn of Geely Group Co., Ltd Document No. 3 relates to the gas ring of a small air-cooled engine

of course, foreign enterprises have also submitted some patent applications. For example, CN of Mitsubishi Heavy Industries Co., Ltd Document No. 4 relates to an air-cooled engine. Honda also submitted several applications. Although there are few applications from abroad, due to the large number of joint-venture engine and automobile enterprises in China, foreign patented technology has been widely used in domestic joint-venture engine and automobile products. For example, Honda has licensed its intellectual property achievements to a large number of joint ventures in China

therefore, although foreign enterprises, especially Japanese funded enterprises, have a small number of patent applications for air-cooled engines in China, their patented technology has achieved great benefits. Under the reform route of market for technology, we have paid a heavy price. With the establishment of the strategy of building an innovative country, developing engine products with independent brands and patented technology will be one of the main development directions of China's engine enterprises. On the other hand, Chinese individuals and small and medium-sized enterprises have most of the domestic air-cooled engine patents. They should take active actions to protect the rights of domestic and foreign enterprises, and strive to obtain sufficient returns on intellectual property investment. (end)