Abstract: Steam from a steam supply source is heated in a heating device, supplied to a nozzle through a secondary steam supply passage and injected from a spout. The temperature of steam at the outlet of the heating device is measured by a first sensor, and a cartridge heater constituting the heating device is controlled on the basis of the difference between the measured temperature and a target value. Steam temperature at the nozzle spout is measured by a second sensor, and a difference between the measured temperature and a target value is obtained. The target value of steam temperature at the heating device outlet is changed to a set value predetermined according to the magnitude of the difference obtained.

Abstract: Steam from a steam supply source is heated in a heating device, supplied to a nozzle through a secondary steam supply passage and injected from a spout. The temperature of steam at the outlet of the heating device is measured by a first sensor, and a cartridge heater constituting the heating device is controlled on the basis of the difference between the measured temperature and a target value. Steam temperature at the nozzle spout is measured by a second sensor, and a difference between the measured temperature and a target value is obtained. The target value of steam temperature at the heating device outlet is changed to a set value predetermined according to the magnitude of the difference obtained.

Abstract: A system for supplying secondary air into the exhaust system of internal combustion engines having in combination two parallel systems, one feeding air depending upon the exhaust gas pressure pulsation and the other feeding air depending upon the delivery of an air pump driven by the output power of the engine.

Abstract: A control apparatus for automatic transmissions of the type having an output shaft of an engine connected to an input shaft of a speed-change gear mechanism through a torque converter. A frictional engagement device is disposed in parallel to the torque converter for directly linking the output shaft to the input shaft and mechanically transmitting the engine power when it is actuated. The control apparatus automatically and hydraulically controls both the selective actuation of the speed-change gear mechanism and the selective actuation of the direct-linkage frictional engagement device through an arrangement of a governor valve, throttle valve, shift valve, pressure-reducing device, operation element, direct-linkage valve and an interlock valve. The direct-linkage valve introduces pressure to the interlock valve in response to a predetermined relationship of pressures generated by the throttle and governor valves, particularly during a relatively high speed drive condition of the vehicle.