Prince cab door glass and the window frame of the question, except to ensure tightness, but also so that the glass can smoothly move along the lifting surface, reducing the glass in a moving vehicle vibration and noise. This is achieved by mounting the guide groove in the window frame of the structure. Pile fabrics commonly used method of bonding on the surface, to achieve non-direct contact with rubber and glass, to reduce the coefficient of friction; both sides of the guide groove by elastic compression of the soft lip or snapping glass surface, the glass movements smooth and vibration, but also ensures that the lift light. Prince site is the elevator cab door sill channel glass heavy truck cab, in order to prevent water from entering, improve corrosion resistance, dust resistance, set the seal on the inside and outside of the glass. Delong cab engine intake Turbocharged role: the role of the turbocharger boost pressure is through the air into the cylinder, increasing the amount of air entering the cylinder; the role of the intercooler is to reduce the intake of pressurized temperature, increase the density of the air entering the cylinder, the intake air amount is further increased. Because of intake air increases, a corresponding increase in the fuel injection quantity can Shandong heavy truck cab, cab Delong increases engine torque and power. Turbocharged diesel engine at low speed intake pressure is low, pressure is poor, low speed high torque load and operating conditions requires a large contradiction. Meanwhile, the Chinese heavy truck cab, due to the inertia of the turbocharger itself, Jinan heavy truck cab assembly, accelerate the intake pressure does not rise rapidly, there is a lag phenomenon, and the fuel supply is based on the amount of intake air inflatable booster after to adjust the results in the acceleration of the instantaneous amount of fuel has increased, but was not a corresponding increase in the amount of air, Delong cab so that the mixture is too thick, incomplete combustion. Delong cab which resulted in low-speed supercharged engine torque and acceleration transient response variation, and produce smoke phenomenon, for supercharged engine has a smoke limiter, so that the fuel supply and increase Matching reasonable amount of air pressure. Also there is smoke limiter on Delong cab engine governor of Shandong heavy truck cab, Jinan Yiu Cheung (certified), heavy truck cab provided by Jinan Yiu Cheung Trading Company. Jinan Yiu Cheung Trading Company (www.jinanyaoxiang.com) Shandong Jinan, engine assembly leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Jinan Yiu Cheung leadership with the staff warmly welcome all inquiries negotiations to create Jinan Yiu Cheung a better future.