Gas admission valve is strategically important component on gas engine. Short response time, large flow rate capacity through the valve, ability to work at large pressure difference and fault tolerant are characteristics that a good valve should be fulfilled. The solenoid based gas admission valve used at the moment has short response time and large flow rate capacity but the main problem is that if pressure difference over the valve is too large, the valve will not open.The goal of this thesis is to design, model and simulate a new gas admission valve which utilizes the principle of digitalization. The application of the thesis is an intake valve which has been integrated gas flow edges. Through the flow edges the gas flows into the engine’s cylinder. The control of the intake valve is realized by using digital hydraulics.The second application of the thesis is digital pneumatic gas admission valve. The valve is realized by using binary coded digital flow control unit. As the results show, digital hydraulic intake air valve with gas flow edges is a realistic construction. Both flow and simulation results indicate that the construction is functional and possible to manufacture.This thesis has been done as a part of FIMECC EFFIMA Digihybrid research project. The target of FIMECC is to increase and deepen the cooperation between companies, universities and research institutes in R&D. The target of EFFIMA is to develop energy efficient machines and devices and the key word of the project is energy efficient. In this thesis energy efficient has been realized by using intelligent controller.
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