摘要:
In a method for controlling an engine for driving a hydraulic pump to supply a pressurized fluid to at least one hydraulic actuator in a construction machinery, a fuel flow supplied to the engine is decreased so that an output rotational speed of the engine is decreased to decrease an excess output of the engine, and the fuel flow is increased to increase the output rotational speed of the engine when a load of the engine for driving the hydraulic pump is more than a first level after the engine output decreasing step.
摘要:
A hydraulic actuator operation controller is shown to make it possible to easily change the operation speeds of a hydraulic actuator for a control input of an operating instrument. A signal input from a control input detection device for detecting the control input of an operating lever is converted according to a logical function by a signal conversion unit. The signal conversion unit increases or decreases the signal in magnitude and outputs the converted signal to a pump control device. The pump control device outputs an instruction to a capacity change device such as an electromagnetic proportional control valve connected to a hydraulic pump. The converted signal is also provided to a valve control device for outputting an instruction to a valve opening-degree control device such as electromagnetic proportional control valves connected to a control valve.
摘要:
A torque control system for variable delivery pumps receiving torque from an engine employs a signal related to an engine torque available at each engine speed setting to control the torque, and thus the amount of engine power that is absorbed by the variable delivery pumps. In a low-power regime, wherein the fuel injected into the engine is less than maximum, torque control is effected by comparing the available torque with an amount of torque that would be available at maximum fuel injection. In a high-power regime, wherein the fuel injected is at least a predetermined value, torque contol is effected by comparing the available torque with an amount of torque that is available at a combination of a set engine speed and an actual engine speed. A bias circuit biases the stable speed operating point a small amount below the maximum speed, whereby improved fuel economy is attained. In a system with more than one variable delivery pump, when less than the full number of pumps is employed, control is effected in the low-power regime, even though all pumps in service are receiving maximum fuel.
摘要:
Disclosed is a highly effective macrophage phagocytosis-activating composition and/or composition promoting cytokine production in macrophages using an active component derived from natural products. A culture obtained by culturing microorganisms belonging to the genus Aureobasidium (Aureobasidium sp.) is used as the active component of the macrophage phagocytosis-activating composition and/or composition promoting cytokine production in macrophages. By means of the macrophage phagocytosis-activating composition and/or composition promoting cytokine production in macrophages, macrophage phagocytosis can be activated, and cytokine production in macrophages can be promoted. In particular, a macrophage phagocytosis-activating composition can activate the phagocytosis of cancer cells or cells damaged or destroyed by anticancer drugs.
摘要:
In the construction machinery equipped with an engine, a hydraulic control unit and a machine controller, there is provided an antitheft device for the construction machinery, which can prevent the engine from starting and the hydraulic control unit from working with reliability no matter how the starter circuit of the engine is modified. The initial state of the machine controller is so set that the fuel injection by a fuel injection unit of the engine is halted and that the operations of control units in the hydraulic control unit are halted, and an antitheft control unit is provided to release the initial state of the machine controller upon receiving a release signal from the antitheft control unit.
摘要:
An electro-hydraulic transducing valve (3a) and other elements associated with cylinder-controlling components, such as a control valve (3), are connected to the output end of a controller (23) adapted to perform control computation based on electric manipulation signals send from and electric joy stick (12a) or the like. Control valve return pressure (PT) and load-sensing pressure (PL) are detected by the first and second detectors (18), (19) so that start-up of a hydraulic cylinder (7) or the like is detected based on rise of the differential pressure (&Dgr;P) between the two types of pressures. The controller (23) is provided with a function generating unit (14a) and a calibration computing unit (20). The function generating unit (14a) has a reference function (F) that determines the relationship between electric manipulation signals and command values for commanding the electro-hydraulic transducing valve (3a) and other similar elements. The calibration computing unit (20) is adapted to correct the reference function (F) by computing the calibration deviation (&Dgr;S) between the actual command value stored at the moment with the cylinder actually started and the provisional command value that corresponds to an imaginary start-up moment of the cylinder and has been set beforehand according to the reference function (F), and adding the calibration (&Dgr;S) to the reference function (F).
摘要:
It is intended to utilize β-glucan produced by a bacterium belonging to Aureobasidium sp. From a bacterium belonging to Aureobasidium sp., a mutant with little pigment accumulation is constructed by a mutagenesis means of, for example, irradiating with ultraviolet light or treating with a mutagen. A culture obtained by culturing this mutant in a liquid culture medium is usable as a composition with a large β-glucan content without showing any intense dark green color caused by the accumulation of melanin-like pigments. This composition may be taken as such as a functional food having the physiologically active functions of the β-glucan-containing composition. Alternatively, it may be added to foods, drinks. food additives, cosmetics and so on.
摘要:
It is intended to utilize β-glucan produced by a bacterium belonging to Aureobasidium sp. From a bacterium belonging to Aureobasidium sp., a mutant with little pigment accumulation is constructed by a mutagenesis means of, for example, irradiating with ultraviolet light or treating with a mutagen. A culture obtained by culturing this mutant in a liquid culture medium is usable as a composition with a large β-glucan content without showing any intense dark green color caused by the accumulation of melanin-like pigments. This composition may be taken as such as a functional food having the physiologically active functions of the β-glucan-containing composition. Alternatively, it may be added to foods, drinks. food additives, cosmetics and so on.
摘要:
In a construction machine including a control unit for receiving operating signals from operating members and outputting operation commands to actuators, by using a monitor and control levers, correlations between the control levers or switches and the actuators, i.e., an input/output relationship between any of the control levers and corresponding one of electro-hydraulic conversion valves, can be freely set. The set input/output relationships are registered in a memory in a rewritable manner.
摘要:
Disclosed is a highly effective macrophage phagocytosis-activating composition and/or composition promoting cytokine production in macrophages using an active component derived from natural products. A culture obtained by culturing microorganisms belonging to the genus Aureobasidium (Aureobasidium sp.) is used as the active component of the macrophage phagocytosis-activating composition and/or composition promoting cytokine production in macrophages. By means of the macrophage phagocytosis-activating composition and/or composition promoting cytokine production in macrophages, macrophage phagocytosis can be activated, and cytokine production in macrophages can be promoted. In particular, a macrophage phagocytosis-activating composition can activate the phagocytosis of cancer cells or cells damaged or destroyed by anticancer drugs.