Modern internal combustion engines utilize valve trains with varying degrees of control freedom, depending on the engine type and operating conditions. Implementing fully variable valve control requires designs with a large number of moving parts. Their mass must be minimized to reduce impact forces and component wear without compromising strength properties. One solution to this problem is the use of TiAl alloy components.
The aim of this study was to estimate changes in the dynamics of components in a selected type of valve train after replacing steel valves, retainers, and springs with titanium ones. The article presents a valve drive model and the obtained relationships for valve lift, velocity, and acceleration as a function of time, engine speed, and load. (…)
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Source: Czasopismo Logistyka