Abstract: In order to prevent fuel leakage from a high pressure fuel pipe at a low temperature, a sealing capacity of a seal member provided in a fuel transfer portion of a high pressure fuel pipe is estimated in accordance with various conditions and the fuel pressure within the high pressure fuel pipe is controlled on the basis of the estimated sealing capacity so as to secure a sealing property in the fuel transfer portion.

Abstract: The semiconductor integrated circuit device incorporates a power supply circuit which forms an operation voltage that matches the operation speed of the internal circuit. Since the operation voltage is set in accordance with the operation speed required of the internal circuit, the internal circuit can be operated with a minimum required voltage even when there are process variations and temperature changes. In other words, a rational power supply is realized.

Abstract: In a method of designing cells applicable to different first and second design automation systems, first and second cells circuit-designed by the first and second design automation systems, respectively, are demarcated into a logic function portion and an input/output portion. A plurality of sets of common lithography patterns for the logic function portions of the first and second cells are determined such that each common lithography pattern set is shared by those of the first and second cells which have same logic function in the first and second design automation systems. A first set of lithography patterns for the input/output portions of the first cells in the first design automation system and a second set of lithography patterns for the input/output portions of the second cells in the second design automation system are determined, respectively.