Viscous Clutch Control System

With the rapid development of productivity and increasing promotion of modernization, the consumption of energy is greatly increased, which may lead to energy crisis and rising of the price of energy. As result, the target of energy saving has become a more and more emergent task.The hydro-viscous is a new type of power transmission device, which has the shear of oil of film between two sets of discs, and widely used for speed regulation and energy saving. The research and experiment on the control system of hydro-viscous are introduced in this paper. The focuses are put on the force model and static performance ofΩvalve, the key part of the control system.The background and significance of the research, including the advantage of the hydro-viscous are introduced in Chapter 1. And the development of hydro-viscous at home and abroad are given.The hydro-viscous, ranging from the project design to mechanical design and hydraulic control system design, is designed in Chapter 2, Several types of control system are introduced.Chapter 3 is the main part of this thesis. According to valve's work environment and the hydraulic valve basic theory, the mechanism and reason of every force are described in detail, and the forces, acted on theΩvalve, are calculated. The coefficient of flow and the speed factor are discussed within hydraulic theory.Through the Newton's law of motion and the liquid equation of continuity, and the supplement equation which proposed according to valve's structure, the mathematical model has been established in Chapter 4.Through the establishment of a mathematical model of the valve and the transfer function block diagram, the structural performance parameters of the valve are discussed.The experiments onΩvalve are introduced in Chapter 5 to prove the legitimacy of the theoretical analysis.The summary of the paper's study work and the prospect of the next step work are presented in Chapter 6.