Abstract: In a generator including a fuel tank that stores liquid fuel, the fuel tank includes a fuel inlet and a breather passage formed by a pipe member through which an inside and outside of the fuel tank communicate with each other, and the pipe member is provided with a valve that blocks the breather passage at normal time and opens the breather passage by a pressure of a predetermined value or higher.

Abstract: The present invention provides a method for identifying noise data of a laser ranging device. An n number of measurement points P(i), P(i?1) and P(i+1) corresponding to an n number of projection lines that are adjacent to each other are extracted from a plurality of measurement points at which distances have been measured by a laser ranging device 1. An approximate straight line L(i) that passes through the n number of measurement points is calculated. A degree of inclination e(i) of the approximate straight line L(i) with respect to the representative line among the projection lines corresponding to the n number of measurement points is determined. If the degree of inclination is smaller than a predetermined threshold value, then the measurement data on a measurement point having a largest distance measurement value among the n number of measurement points is identified as noise data.

Abstract: The present invention provides a method for identifying noise data of laser ranging devices. The measurement data of a plurality of measurement points is acquired by a plurality of laser ranging devices 1A and 1B, which are placed such that the laser beam projection areas thereof overlap with each other. A set of measurement points common to the laser ranging devices 1A and 1B is extracted from the measurement points. Noise data is identified based on the measurement data of each of a plurality of (two) measurement points constituting the set of common measurement points.

Abstract: The present invention provides a method for detecting an edge of an object by using a laser ranging device. An n number of measurement points P(i), P(i?1) and P(i+1) corresponding to an n number of projection lines that are close to each other are extracted from a plurality of measurement points, the distances of which have been measured by a laser ranging device 1, and an approximate straight line L(i) that passes through the n number of measurement points is calculated. The degree of inclination e(i) of the approximate straight line L(i) for a representative line of projection lines corresponding to the n number of measurement points is determined. If the degree of inclination is smaller than a predetermined threshold value, then one of the n number of measurement points is identified as a measurement point of an edge of an object.

Abstract: The present invention provides a method for detecting an edge of an object by using a laser ranging device. An n number of measurement points P(i), P(i?1) and P(i+1) corresponding to an n number of projection lines that are close to each other are extracted from a plurality of measurement points, the distances of which have been measured by a laser ranging device 1, and an approximate straight line L(i) that passes through the n number of measurement points is calculated. The degree of inclination e(i) of the approximate straight line L(i) for a representative line of projection lines corresponding to the n number of measurement points is determined. If the degree of inclination is smaller than a predetermined threshold value, then one of the n number of measurement points is identified as a measurement point of an edge of an object.

Abstract: The present invention provides a method for identifying noise data of laser ranging devices. The measurement data of a plurality of measurement points is acquired by a plurality of laser ranging devices 1A and 1B, which are placed such that the laser beam projection areas thereof overlap with each other. A set of measurement points common to the laser ranging devices 1A and 1B is extracted from the measurement points. Noise data is identified based on the measurement data of each of a plurality of (two) measurement points constituting the set of common measurement points.

Abstract: The present invention provides a method for identifying noise data of a laser ranging device. An n number of measurement points P(i), P(i?1) and P(i+1) corresponding to an n number of projection lines that are adjacent to each other are extracted from a plurality of measurement points at which distances have been measured by a laser ranging device 1. An approximate straight line L(i) that passes through the n number of measurement points is calculated. A degree of inclination e(i) of the approximate straight line L(i) with respect to the representative line among the projection lines corresponding to the n number of measurement points is determined. If the degree of inclination is smaller than a predetermined threshold value, then the measurement data on a measurement point having a largest distance measurement value among the n number of measurement points is identified as noise data.

Abstract: Engine cooling structure directs cooling air, introduced into a case by operation of a fan, to a cylinder block of an engine and then discharges the cooling air out of the case through an outlet port along meandering flow passages. Case cooling structure directs cooling along the inner surface of the case. Further cooling flow passage directs the air to vertically-oriented heat radiating fins so that the cooling air flows upward along the fins and then is discharged through the outlet port. Metal cooling-fan cover is supported by the lower cover via mounting members, and a resin-made cover guide is fastened to the engine together with supporting portions and interposed between the fan cover and the engine.

Abstract: Engine cooling structure directs cooling air, introduced into a case by operation of a fan, to a cylinder block of an engine and then discharges the cooling air out of the case through an outlet port along meandering flow passages. Case cooling structure directs cooling along the inner surface of the case. Further cooling flow passage directs the air to vertically-oriented heat radiating fins so that the cooling air flows upward along the fins and then is discharged through the outlet port. Metal cooling-fan cover is supported by the lower cover via mounting members, and a resin-made cover guide is fastened to the engine together with supporting portions and interposed between the fan cover and the engine.