In order to facilitate production management and use of the national standard GB2819 model designation for diesel generator sets made uniform provisions. Type arrangement and symbols meaning the unit is as follows: 1, the unit output power rating (KW) is represented by a number. 2, the type of unit output current: G- AC power frequency; P an exchange of intermediate frequency; S a dual exchange; Z has been flowing 3, type units: F- land use; FC a ship; Q- car station; T a Hanging (drag) car. 4, the control unit's features: the absence of a manual (ordinary); Z- automation; S- low noise; SZ- low noise automation. 5, the design number, numerical. 6, variant code, expressed numerically. In fact, the working process of diesel engines with petrol engine the same, each work cycle has gone through intake, compression, for power, exhaust four stroke. But because diesel fuel is diesel Weifang Huadong unit, the viscosity than gasoline, which is difficult evaporation, while its auto-ignition temperature was lower than the gasoline Weifang Huadong unit sales, thus forming a combustible gas mixture and ignition gasoline engine are different. In the intake stroke diesel inhaled pure air. When near the end of the compression stroke, diesel fuel injection pump through the oil pressure up to 10MPa or more, and injected into the cylinder Shandong East China quoted by the injector unit, in a very short period of time is mixed with hot air compressed to form a combustible mixture. Because the diesel engine compression ratio (usually 16-22), so the compressed air pressure inside the cylinder end up 3.5-4.5MPa, while temperatures up 750-1000K (and gasoline engine hybrid gas pressure at this point will 0.6-1.2MPa , temperature of 600-700K), much higher than diesel fuel auto-ignition temperature. Gasoline engine 1, the working principle: gasoline engine is easy to play in the East China Shandong gasoline-powered unit service in the outside of the cylinder to form a combustible mixture carburetor (carburetor gasoline) with air or gas is injected into the nozzles Intake form a flammable mixture (EFI gasoline engine) and air into the cylinder, the spark ignited engines. Gasoline work process by the intake, compression, combustion and expansion, four stroke exhaust components. Weifang Huadong Engine Co., Ltd., welcomed the new and old customers to buy. Weifang Huadong crew Partner | Shandong East China (Online) | Weifang Huadong unit provided by the Weifang Huadong Engine Co., Ltd. Weifang Huadong Engine Co., Ltd. (www.hdchai.com) is an industry leader in Shandong Weifang, the internal combustion engine, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Weifang Huadong leadership with the staff warmly welcome all inquiries negotiations to create a better future Weifang Huadong.