An electromagnetic variable valve (EMVV) system can significantly reduce pumping loss and discharge of the engine by enabling timing lift. However, seat easily produces a larger impact collision with cylinder head because fast seating velocity, greatly decreasing life. Therefore, in this paper, buffer (VSB) is designed to solve problem large impact. Firstly, scheme an EMVV embedded proposed, mo...

The effects of the valve opening and opening height are very crucial in internal combustion engine. The optimum setup for the opening cam high and timing of camshafts in engines will improve fuel economy and exhaust gas emission. This improvement can be obtained from intake (inlet) valve timing and also from exhaust (outlet) valve timing. The challenging technique is to set up the engine to the...

Regional abnormalities of left ventricular function are frequently determined from superimposed cavity outlines at end-diastole and end-systole. The timing of end-diastole is standardised with respect to the electrocardiogram, but that of end-systole is undefined, and frequently determined by simple inspection. To examine the effect of variation in the timing of the end-systolic frame on appare...

Modern heavy-duty vehicles are equipped with compression braking mechanisms that augment their braking capability and reduce wear of the conventional friction brakes. In this paper we consider a heavy-duty vehicle equipped with a continuously variable compression braking mechanism. The variability of the compression braking torque is achieved through controlling a secondary opening of the exhau...

Stress haemodynamics for asymptomatic mitral valve regurgitation may prove helpful in determining the optimal timing for surgery.

The pursuit of increasing the efficiency internal combustion engines is an ongoing engineering task that requires numerous research efforts. New concepts injection or systems require preliminary investigation work using engines. These engines, usually single-cylinder, make it possible to isolate a single variable in complex mixture preparation process, thus enabling analysis changes being made....

In this paper, the use of a variable volume ratio expander for 10 kWe organic Rankine cycle (ORC) to be integrated in Carnot battery has been studied. The reciprocating piston used work built-in mechanism which allows changing inlet valve timing and hence internal - pressure ratio. experimental results ORC prototype are presented. A total 58 steady state points collected by varying heat source ...

Phonocardiography is-often more valuable than electrocardiography in timing mechanical events in the cardiac cycle. This study shows that the opening and closing of the mitral valve are related to the length of the previous heart cycle as demonstrated by the variations occuring in aluricular fibrillation. These variations in valve action are controlled by the pressure gradient between left auri...