摘要:
Zinc powder, which contains a coloring element, e.g., Ti, Mn, or V, is heated to a temperature of from 350.degree. to 700.degree. C. so as to oxidize the surface of the powder and hence to develop such colors as brown, navy blue, blue, greenish-brown, green, and coffee brown. The colored zinc powder is sprayed onto a steel, aluminum, or ceramic article to produce a colored article. The colored zinc powder is also used as a pigment.
摘要:
A four wheel drive system for a vehicle includes comprising a power plant for producing a driving force, a front wheel driving mechanism for transmitting the driving force to drive right and left front wheels, a rear wheel driving mechanism for transmitting the driving force to drive right and left rear wheels, and right and left wheel clutches provided in one of the driving mechanisms for controlling the amount of the driving force transmitted to the wheels. A cut-off clutch is provided for controlling the driving force transmitted to the wheels of the one of the driving mechanisms, and a control device causes the cut-off clutch to engage before the wheel clutch is engaged. The driving force is transmitted sequentially rather than instantly from the cut-off clutch, the wheel clutches and to the wheels so as to suppress the torque shock creative in connection with a change in the drive condition.
摘要:
A drive control system of a four-wheel drive vehicle has a differential device interposed between front and rear wheels and a differential restricting device mounted to the differential device. The differential restricting device is subjected to feedback control so as for the wheels to reach a target slip ratio. In this control, a control target value is given by way of slip ratios of the wheels and the target slip ratios are then converted into a wheel speed difference between the front and rear wheels. The feedback control of the differential restricting device is performed by comparing the target wheel speed difference with an actual wheel speed difference between the front and rear wheels.
摘要:
An engine control apparatus includes an operation amount detection section for detecting an operation amount of an acceleration pedal, a throttle valve for adjusting an engine output, an arithmetic section for receiving the output from the operation amount detection section and calculating a control amount corresponding to the output operation amount of the acceleration pedal in accordance with a predetermined characteristic, the control amount being one for controlling the throttle valve, a motor for receiving the output from the arithmetic section and driving the throttle valve in accordance with the control amount calculated by the arithmetic section, a return detection section for detecting a return state of the acceleration pedal, and a control section for, when the return detection section detects the return state of the acceleration pedal, controlling the arithmetic section to output the control amount in accordance with a characteristic with which the engine output is decreased below that according to the predetermined characteristic.
摘要:
A method for production of metal by molten-salt electrolysis is a method for production of metal by molten-salt electrolysis which is performed by filling molten salt of a metal chloride in an electrolysis vessel having an anode and a cathode, and a molten salt which reduces solubility of the metal in the molten salt is used.
摘要:
The present invention aims at providing a game device comprising a body moving mechanism for rapidly moving a body in accordance with the game program development. In order to achieve such aim, the game device according to the present invention comprises a handle unit for operating the movements of a virtual vehicle in a game program, and controls the movements of such vehicle in correspondence with the operating signal from the handle unit. For these purposes, a movable body is supported by a fixed body in a freely tilting position. The pulley of the handle unit rolls along a belt when the rotation torque of the AC servomotor is high, and the rudder input from the steering wheel is directly communicated to the movable body.
摘要:
An engine control system for controlling combustion of an internal combustion engine equipped with an exhaust gas purifying catalyst. The system controls fuel combustion on the basis of control parameters including air/fuel ratio, ignition timing and intake air flow so as to cause a rise in exhaust gas temperature while an exhaust gas purifying catalyst installed in an exhaust line of the engine is insufficiently warmed or inactive. When a fluctuation of engine speed is detected, the system controls the air/fuel ratio to reach a target value close to a stoichiometric value, for example, a value between 13 and 17, and controls a control parameter other than air/fuel ratio so as to bring the fluctuation of engine speed within limits of stable combustion while the exhaust gas purifying catalyst is insufficiently warmed. The air/fuel ratio feedback control may be commenced immediately after an engine start.
摘要:
An engine control device has an idle speed control of an engine by an ignition timing control and an idle speed control by air-by-fuel ratio feedback. This engine control device detects roughness caused by a torque change on the basis of a change in angular velocity of a crank shaft, sets a control gain depending on the roughness, reflects the control gain on the idle speed control by the ignition timing control, thereby harmonizing the idle speed control of the engine by the ignition timing control with the idle speed control by the air-by-fuel ratio feedback.
摘要:
A sputtering target for forming a thin film consisting of high-purity titanium, in which the content of alkali metal is 0.1 ppm or less, the content of radio active elements is 1 ppb or less, and the oxygen content is 100 ppm or less, and, further, the balance of the elements is Ti, is produced by a fused salt electrolysis, in which the members of the electrolytic cell being in contact with the fused salt consist of Ni.
摘要:
A brown coated article which exhibits stable color is provided by the composition and structure of a zinc hot-dip galvanizing layer. The zinc hot-dip galvanizing layer consists essentially of from 1 to 15% by weight of Fe and from 0.05 to 1% by weight of Mn, and balance of Zn. A brown Zn-Mn-Fe oxide layer is present on the surface of the zinc hot-dip galvanizing layer.