Abstract
When calculating indicated mean effective pressure (IMEP), it is necessary to measure the original cylinder pressure correctly. Generally producing calculation error is known, if IMEP is calculated from pressure diagram with which top dead of center (TDC) detection position deviation. In this paper, it cralified about effect to which TDC detection position deviation exerts on IMEP calculation result from pressure diagram by which fourier series expansion was carried out using solicited method, and its cause.
