Abstract: Disclosed is a method for appointing an orientation flat, in which when there are a plurality of orientation flats with the same length, any one from among the orientation flats of the same length can be certainly appointed as a reference orientation flat. In the disclosed method, three orientation flats at three positions are detected, respectively, through the rotation of a semiconductor wafer, the lengths of three circular arcs between the three orientation flats are obtained, respectively, and then an orientation flat at the right side of the longest circular arc from among the three circular arcs is appointed as a reference orientation flat. Accordingly, it is possible to certainly appoint a reference orientation flat even though there exist a plurality of circular arcs with the same length.

Abstract: Disclosed is a pre-alignment method and a computer-readable medium storing a pre-alignment program capable of reducing pre-alignment time and transfer time of a semiconductor wafer.

Abstract: Disclosed is a pre-alignment method and a computer-readable medium storing a pre-alignment program capable of reducing pre-alignment time and transfer time of a semiconductor wafer.

Abstract: Disclosed is a method for appointing an orientation flat, in which when there are a plurality of orientation flats with the same length, any one from among the orientation flats of the same length can be certainly appointed as a reference orientation flat. In the disclosed method, three orientation flats at three positions are detected, respectively, through the rotation of a semiconductor wafer, the lengths of three circular arcs between the three orientation flats are obtained, respectively, and then an orientation flat at the right side of the longest circular arc from among the three circular arcs is appointed as a reference orientation flat. Accordingly, it is possible to certainly appoint a reference orientation flat even though there exist a plurality of circular arcs with the same length.

Abstract: A heat engine system includes a fuel reforming system for supplying a reformed gas to be combusted in an internal combustion engine or used to generate electricity in a fuel cell. An alcohol-containing fuel and water are mixed in a tank and separated into a hydrocarbon based fuel and the fluid mixture of alcohol and water. A reformer uses an endothermic reaction, such as a water vapor reforming process, to obtain the reformed gas from the fluid mixture.

Abstract: A heat engine system includes a fuel reforming system for supplying a reformed gas to be combusted in an internal combustion engine or used to generate electricity in a fuel cell. An alcohol-containing fuel and water are mixed in a tank and separated into a hydrocarbon based fuel and the fluid mixture of alcohol and water. A reformer uses an endothermic reaction, such as a water vapor reforming process, to obtain the reformed gas from the fluid mixture.

Abstract: An internal combustion engine comprises a main combustion chamber part, an auxiliary combustion chamber part, a first communicating passage, a second communicating passage and an igniting component. The auxiliary combustion chamber part includes first and second auxiliary combustion chambers. The first auxiliary combustion chamber is disposed adjacent to the main combustion chamber part. The second auxiliary combustion chamber is disposed adjacent to the first auxiliary combustion chamber at a position further away from the main combustion chamber part. The first communicating passage extends between the main combustion chamber part and the first auxiliary combustion chamber and the second communicating passage extends between the first auxiliary combustion chamber and the second auxiliary combustion chamber.

Abstract: An internal combustion engine comprises a main combustion chamber part, an auxiliary combustion chamber part, a first communicating passage, a second communicating passage and an igniting component. The auxiliary combustion chamber part includes first and second auxiliary combustion chambers. The first auxiliary combustion chamber is disposed adjacent to the main combustion chamber part. The second auxiliary combustion chamber is disposed adjacent to the first auxiliary combustion chamber at a position further away from the main combustion chamber part. The first communicating passage extends between the main combustion chamber part and the first auxiliary combustion chamber and the second communicating passage extends between the first auxiliary combustion chamber and the second auxiliary combustion chamber.