Abstract: There is provided an exhaust gas purification device that shows a high HC removal performance under a condition in which a rich air-fuel mixture is introduced. The exhaust gas purification device includes a substrate, a first catalyst layer, and a second catalyst layer. The substrate includes an upstream end and a downstream end. The first catalyst layer is disposed on a surface of the partition wall in an upstream region including the upstream end of the substrate. The second catalyst layer is disposed inside the partition wall in a downstream region including the downstream end of the substrate. The first catalyst layer contains a first metal catalyst and alumina-zirconia composite oxide. The second catalyst layer contains a second metal catalyst.

Abstract: An inverter power generator includes an engine, an actuator that adjusts the position of a throttle valve of the engine, a power generator that generates AC power from a driving force of the engine, a converter that converts the AC power outputted from the power generator into DC power, an inverter that converts the DC power outputted from the converter into AC power, a current detector that detects the current of the AC power outputted from the inverter, a voltage detector that detects the voltage of the AC power outputted from the inverter, a target rotation speed determiner that determines a target rotation speed of the engine based on a detected current value and a correction value based on the difference between a target voltage value and the detected voltage value, and an actuator controller that controls the actuator based on the determined target rotation speed.

Abstract: An inverter power generator includes an engine, an actuator that adjusts the position of a throttle valve of the engine, a power generator that generates AC power from a driving force of the engine, a converter that converts the AC power outputted from the power generator into DC power, an inverter that converts the DC power outputted from the converter into AC power, a current detector that detects the current of the AC power outputted from the inverter, a voltage detector that detects the voltage of the AC power outputted from the inverter, a target rotation speed determiner that determines a target rotation speed of the engine based on a detected current value and a correction value based on the difference between a target voltage value and the detected voltage value, and an actuator controller that controls the actuator based on the determined target rotation speed.

Abstract: An engine generator includes a generator body connected to an engine, a converter including rectifiers that convert an output from the generator body to DC current, an inverter that converts an output from the converter to AC current, an input voltage detector that detects an input voltage from the generator body to the converter, and an AC current detector that detects an AC current output from the inverter. An abnormality in the engine generator is determined if a state that a current detected by the AC current detector is not higher than a first threshold value and a duty ratio of a voltage detected by the input voltage detector is not higher than the second threshold value continues for a first predetermined time; or if the current detected by the AC current detector is not higher than a third threshold value and the duty ratio change rate is not higher than a fourth threshold value.

Abstract: An engine generator includes a generator body connected to an engine, a converter including rectifiers that convert an output from the generator body to DC current, an inverter that converts an output from the converter to AC current, an input voltage detector that detects an input voltage from the generator body to the converter, and an AC current detector that detects an AC current output from the inverter. An abnormality in the engine generator is determined if a state that a current detected by the AC current detector is not higher than a first threshold value and a duty ratio of a voltage detected by the input voltage detector is not higher than the second threshold value continues for a first predetermined time; or if the current detected by the AC current detector is not higher than a third threshold value and the duty ratio change rate is not higher than a fourth threshold value.

Abstract: An engine of a snow blower is arranged with a crankshaft along a front to rear direction of the snow blower, and an output shaft, with an outer circumferential portion on which a drive pulley is fixed, is provided in a front end portion of the crankshaft. Further, an intermediate shaft with a rear end circumference on which a driven pulley is fixed and with a front end circumference, on which an impeller drive pulley is fixed, is arranged to extend toward a front direction higher than the output shaft. An impeller drive shaft with a rear end circumference on which an impeller driven pulley is fixed is arranged to extend toward the front direction more downward than the intermediate shaft. A first transmission belt is meshed with the drive pulley and the driven pulley, and a second transmission belt is meshed with the impeller drive pulley and the impeller driven pulley. Using this arrangement, it is possible to provide a snow blower with a low center of gravity.

Abstract: An engine of a snow blower is arranged with a crankshaft along a front to rear direction of the snow blower, and an output shaft, with an outer circumferential portion on which a drive pulley is fixed, is provided in a front end portion of the crankshaft. Further, an intermediate shaft with a rear end circumference on which a driven pulley is fixed and with a front end circumference, on which an impeller drive pulley is fixed, is arranged to extend toward a front direction higher than the output shaft. An impeller drive shaft with a rear end circumference on which an impeller driven pulley is fixed is arranged to extend toward the front direction more downward than the intermediate shaft. A first transmission belt is meshed with the drive pulley and the driven pulley, and a second transmission belt is meshed with the impeller drive pulley and the impeller driven pulley. Using this arrangement, it is possible to provide a snow blower with a low center of gravity.

Abstract: A device for manufacturing a motor is disclosed. The motors to be manufactured have a stator body including a stator of the motor, field cores that protrude from the inside surface of the stator body, pole pieces that extend from the field cores to cross with the field cores, coil receiving parts defined by a space facing the field cores, the pole pieces and the inside surface of the stator body, and coils retained in the coil receiving parts. The device has first jigs that extend in the longitudinal direction of the stator body and retain the pole pieces as well as a second jig that extends in the longitudinal direction of the stator body. The second jig has a pressing part corresponding to the arcuate shape of the pole pieces. The device further includes a pressing mechanism that presses the first jigs retaining the pole pieces away from the coil receiving parts, thereby bending the pole pieces away from the coil receiving parts.

Abstract: It is an object of the present invention to provide an effective technique for easily installing many turns of a coil winding on the stator body. According to the invention, method of manufacturing a motor is provided. The motor may include a stator body, field cores, pole pieces, coil receiving parts. The method may include the steps of bending the pole pieces away from the coil receiving parts, inserting the tied coils into the coil receiving parts and bending the pole pieces bent away from the coil receiving parts toward the coil receiving parts, thereby retaining the coils in the coil receiving parts by the pole pieces. Because the pole pieces are once bent away from the coil receiving parts and then, the tied coils are inserted into the coil receiving parts, it is not necessary to retain each turn of the coil winding and therefore, number of turns of the coil winding is not restricted by the length of the pole pieces. As a result, high motor output can be ensured without uselessly upsizing the motor.