48results about How to "Reduce throttling" patented technology

A reciprocating-piston internal combustion engine having a hydraulic adjustment mechanism which is assigned to a connecting rod and which comprises at least one eccentric, for adjusting at least one variable compression ratio in at least one cylinder of the reciprocating-piston internal combustion engine by means of a change in an effective length of a connecting rod. Also proposed is a method for changing the effective length of a connecting rod.

The invention discloses a structural design and a realization way of a dual-opening-pressure and dual-displacement safety valve. The safety valve is provided with two different pressure regulation mechanisms capable of providing opening pressures of two different types and corresponding displacements, wherein a primary pressure-displacement regulating mechanism is composed of a valve body, a valve core, a main spring, a spring sleeve and a locking nut and provides the primary opening pressure and displacement of the safety valve; and a secondary pressure-displacement is composed of a valve core, a built-in valve core, a secondary spring, a regulation rod, a spring sleeve and a regulating nut and is used for providing the secondary opening pressure and displacement of the safety valve. The dual-opening-pressure dual-displacement safety valve is applicable to various air pressure systems, is used for releasing gas with pressure higher than the safe pressure of the systems and maintaining the safe operation of the system, and is especially applicable to a condition that the gas supply of the system is limited; when the pressure of the system is slightly higher, small displacement is needed for performing slow pressure relief, so that the gas in the system is prevented from being rapidly lost and being supplied. The safety valve is of an all-metal structure and is also applicable to high temperature systems.

Various embodiments related to controlling EGR in an engine are disclosed. In one embodiment, a first EGR amount is supplied to a cylinder at a first temperature and a first engine speed and load. Further, at the first engine speed and load, as engine temperature increases from the first temperature to a second temperature, a first fuel amount is injected after exhaust valve closing and before intake valve opening while a second EGR amount is supplied to the cylinder that is greater than the first EGR amount.

A system for controlling inbound transition of an aircraft includes a fuselage and first and second freewings pivotably mounted on opposing sides thereof. The system includes an airspeed sensor that outputs an airspeed indication signal. The system includes a controller for increasing aircraft engine thrust to substantially maximum for inbound transition, and for generating pitch and freewing control signals. The system includes actuators for actuating aircraft control surfaces in response to the pitch control signal to rapidly increase pitch of the fuselage to decelerate the aircraft, and for actuating freewing control surfaces in response to the freewing control signal to adjust lift produced by the freewings to oppose climbing of the aircraft due to the increase in engine thrust and the increase in the fuselage pitch. The controller is configured to decrease the engine thrust as the aircraft decelerates until the aircraft is in a hover mode.

The invention relates to a wind power plant gear mechanism (1) with an axle (5) and a gearwheel (2), wherein at least one sliding bearing bush (4, 20) is arranged between the axle (5) and the gearwheel (2), and wherein the at least one sliding bearing bush (4, 20) is connected to the gearwheel (2) via a conical press fit, wherein the at least one sliding bearing bush (4, 20) has a first end surface (8) and a second end surface (9) which lies opposite the former along a longitudinal centre axis (7) through the at least one sliding bearing bush (4, 20), and wherein the first end surface (8) has a diameter d (10) and the second end surface (9) has a diameter D (11), wherein the diameter D (11) is greater than the diameter d (10), and wherein a bearing surface (13) for the at least one sliding bearing bush (4, 20) is formed so as to adjoin the end surface (9) with the diameter D (11).

The invention relates to a wind speed and wind volume measuring device based on the static pressure principle. The wind speed and wind volume measuring device comprises a box body with two openings at two ends; one opening is an air inlet, and the other opening is an air outlet; a rectification grating is arranged and mounted in the air inlet; the inner box body behind the rectification grating serves as an air flow channel; pitot tubes are uniformly laid in the air flow channel; each pitot tube is only provided with an air inlet and a full-pressure port; the full-pressure port of each pitot tube is communicated with a pitot tube full-pressure gathering tube; the pitot tube full-pressure gathering tube is communicated with a full-pressure gathering tube; a full-pressure conveying tube is arranged and mounted on the full-pressure gathering tube; a static pressure testing tube is laid in the air flow channel. The wind speed and wind volume measuring device combines two testing methods, namely an air channel surface test and a pitot tube static pressure testing hole test, utilizes testing air channel static pressure on the air channel surface to replace the pitot tube static pressure, and reduces route I pitot tube static pressure testing pipeline, so as to reduce air channel throttling; the box body is used to replace part of existing air channel, thereby solving the deficiency of lack of straight tube for wind speed measuring device in a large wind box structure.

The invention relates to an injector control valve of an electric control internal combustion engine. The injector control valve comprises a gag bit, a control valve base, an injector basal body, a gag bit rod, a steel ball, a control panel, a control piston, an electromagnetic driver and a gag bit return spring. The injector control valve is characterized in that the support sealing surface at the upper end of the control panel is a conical concave curved surface; the conical concave curved surface consists of a large-angle conical surface, a circular arc transitional section and a small-angle conical surface in sequence from periphery to center; the angle of the large-angle conical surface is 130-150 degrees; and the angle of the small-angle conical surface is 90-125 degrees. The control valve can precisely and stably control the change of pressure in a pressure control room, so that the injection quantity of an injector is stable and controllable; and the control valve can effectively rotate the steel ball, so that the service life of the control valve is prolonged.

An object of the present invention is to effectively reduce driving force of a vehicle, when the driving force of the vehicle must be reduced, while avoiding an increase in the temperature of exhaust gas and resultant deterioration of an exhaust gas purification catalyst, the object being achieved by effectively utilizing delaying of the ignition timing or reduction of the fuel supply amount to a possible extent, while preventing elongation of the execution time of control of delaying the ignition timing or control of reducing the fuel supply amount. When the driving force of the vehicle is excessively large, a target driving force Fxt is computed. When an indicator value SAa indicating the degree of necessity of reducing the driving force is equal to or greater than a first reference value SAa1, the throttle opening is reduced so that the driving force of the vehicle decreases more slowly than the target driving force Fxt. When the indicator value SAa is equal to or greater than a second reference value SAa2 greater than the first reference value SAa1, in addition to the reduction of the throttle opening, the ignition timing is delayed so that the driving force of the vehicle decreases faster than does in the case where only the reduction of the throttle opening is performed.

Damping device for a percussion device of a rock drilling machine (1) having a striking direction (R), including a damping piston (8) for action in an axial direction against a tool to be driven by the percussion device, wherein the damping piston (8) exhibits a piston portion (6), which is received in a damping chamber (7) whereto is connected a damping flow circuit including a supply conduit (14), and wherein an outlet conduit (15) is connected to the damping chamber. A damping flow regulator (10) being controllable in respect of damping flow in the damping flow circuit is arranged in said supply conduit (14), and a control means (11) is arranged to emit control signals to the damping flow regulator (10) for regulating said damping flow. The invention also concerns a percussion device, a rock drilling machine and a method.

The invention discloses a bridge type concentric constant pressure water distributor. The bridge type concentric constant pressure water distributor comprises an upper joint, a positioning platform, aconcentric adjusting sleeve, an outer protective casing, an adjusting mechanism, a main structure and a lower joint. The outer protective casing is connected to one end of the upper joint, the main structure is connected to the other end of the outer protective casing, and the lower joint is connected to the other end of the main structure. One end of the positioning platform is installed insidethe upper joint in a sleeved mode, and the main structure is connected to the other end of the positioning platform. One end of the concentric adjusting sleeve is installed inside the positioning platform in a sleeved mode, and the main structure is connected to the other end of the concentric adjusting sleeve. The upper joint, the positioning platform, the concentric adjusting sleeve, the outer protective casing, the main structure and the lower joint are centrally penetrated and coaxially arranged, the adjusting mechanism is installed and pressed tightly between the main structure and the outer protective casing in a sleeved mode, and the concentric adjusting sleeve meshes with one end of the adjusting mechanism. The design combining electric direct adjustment of downhole flow and a constant pressure control technology is adopted in the bridge type concentric constant pressure water distributor, the flow control effect is improved, and the voltage stabilization and constant voltage control are realized.

The present invention provides a novel electrically-controlled oil injector, comprising an electromagnetic valve, a control piston, a control cavity, a one-way valve, a needle valve cavity, an oil nozzle, a high-pressure oil line and a low-pressure oil line; the high-pressure oil line includes three branches, one branch leads to the control cavity through an oil inflow hole and then leads to the low-pressure oil line through an oil outflow hole, another branch leads to the oil nozzle through a lower end valve of the control piston, the remaining branch leads to the oil nozzle needle valve cavity through the one-way valve and then leads to the low-pressure oil line through a throttle hole, and the control piston is never rigidly connected with the oil nozzle. The novel electrically-controlled oil injector has the advantages that pressure of the oil nozzle needle valve cavity is turned into low pressure so that it is possible to reduce opening resistance for an oil nozzle needle valve; the control piston is used to actively control opening and closing of the high-pressure oil line leading to the oil nozzle so that it is possible to reduce closing resistance for the oil nozzle needle valve; the one-way valve is used to increase an oil line leading to the upper end control cavity of the oil nozzle so that it is possible to increase closing power for the oil nozzle needle valve. It is possible to greatly increase the opening and closing speed of the oil nozzle needle valve, thereby increasing oil injection.

According to the embodiments of the invention, a method for reducing maximal pressure of rail shared injector in fault condition is provided. When a fault condition (31) is spotted, a special operation mode is initialized (32) for at least one rail shared injector (2). In this way, the maximal pressure in fault condition can be reduced without modifying other high voltage components or the design of rail shared injector. For these innovations, expensive manufacturing costs of injector (4), valve blocks (8) and injection nozzles (10) can be avoided.

Injection molding system comprising at least one first actuator-system (D1, D2, D3), the first actuator system comprising: at least one piston drive having at least two pressure line connectors (CP2, CP3) to drive a piston to open or close a molding nozzle, pressure lines (L1, L2) connectable to a changeover valve (V) having a pressure line connector (P) and tank line connector (T) and at least two changeover pressure line connectors, wherein the first changeover valve pressure line connector (CV1) is connectable to a first pressure line (L1) and the second changeover valve pressure line connector (CV2) is connectable to a second pressure line (L2), wherein the second pressure line (L2) is connected to the second pressure line connector (CP2) of the piston drive, an electronically adjustable flow control valve having a first pressure line connector and a second pressure line connector, wherein the first pressure line connector of the adjustable flow control valve being connected to the first pressure line (L1) to allow a connection to the first pressure line connector (CV1) of the changeover valve (V), and the second pressure line connector is connected to a third pressure line (L3) which establishes a connection to the second pressure line connector (CP3) of the piston drive, at least one electronic flow sensor for (P1, P2, P3) sensing flow rate in the first, second and/or third pressure lines (L1, L2, L3), a controller connected to the adjustable flow control valve and to the at least one sensor, configured to electronically adjust the flow control valve, depending on information of the at least one sensor, controlling thereby the timing and the speed of the movement of the piston and the molding nozzle.

The invention provides a method for dragging a cement production line rotating machine by adopting a steam turbine. The method comprises the steps: A, a driving part of the rotating machine adopts the steam turbine; B, a steam boiler produces steam and fees the steam into the steam turbine through a pipe; C, the steam turbine drives the rotating machine to rotate; D, dead steam produced by the steam turbine in working is discharged into a coagulator; E, water coagulated by the coagulator is fed into a deaerator; F, deoxidized water in the deaerator is fed into a deoxidizing water tank; G, water in the deoxidizing water tank is fed into the steam boiler; H water in the steam boiler is heated to form steam and the steam is fed into the steam turbine. A high-power high-voltage electric motor is replaced by the steam turbine, the output rotation speed and power of the steam turbine can be adjusted by adjusting the steam quantity of the boiler, the power requirement of the rotating machine is met, stepless speed regulation is achieved, energy consumption is reduced, and throttle and low-efficiency loss caused by process parameter adjustment in the cement production process are reduced.