146 results about "Governor" patented technology

A gaseous-fueled reciprocating internal combustion engine includes a carburetor having a throttle valve that is controlled by a speed governor. A proportional fuel control valve is disposed intermediate a fuel supply and the carburetor, and is controlled by an air fuel computing device. The computing device generates a control signal to adjust the fuel control valve based on a governor sensed variable indicative of engine speed, sensed engine torque, a governor output signal from the governor indicative of an opening position of the throttle valve wherein 100% corresponds to a wide open throttle position, and 0% corresponds to a closed position, and a lean combustion control map containing predetermined set point values stored in memory. During operation, the control valve is responsive to the control signal generated by the computing device for adjustment of a fuel flow therethrough so as to obtain a ratio of air to fuel provided to the engine that is substantially at a lean misfire limit of the engine, thereby reducing fuel consumption, NOx emissions, and reducing exhaust gas temperatures. Alternatively, the control signal is generated using engine speed alone.

A brake mechanism (10) for an elevator (2) is activated in response to an electronic control signal to prevent movement of an elevator car (16) under predetermined conditions. The brake mechanism is preferably a safety mechanism (10) and does not require a governor sheave, a governor rope, or a tension sheave. The safety mechanism in one disclosed example utilizes a solenoid actuator (22b) and an electric motor (40) and gear box assembly (42) to move safety wedges (18) into engagement with a guide rail (20) to stop the elevator car (16). The safety wedges (18) are held in a non-deployed position during normal elevator operation. If there is a power loss or if elevator car speed exceeds a predetermined threshold, an electronic control signal activates the safety mechanism (10) causing the solenoid to release, which causes the safety wedges (18) move in a direction opposite to that of a safety housing (12) mounted for movement with the elevator car (16). Angled surfaces of the safety housing (12) force the safety wedges (18) into engagement with the guide rail (20). The safety mechanism (10) can be selectively reset from a remote location.

A propeller control system includes a propeller control logic subsystem in conjunction with an engine control logic subsystem to provide an optimized transition from forward to reverse speed governing under all operating conditions. By creating a Propeller control Mode (PCM) map relative the blade angle and Power Lever Angle (PLA), the minimum blade angle allowed for forward speed governing and the maximum blade angle allowed for reverse speed governing is determined. By combining the actual propeller blade angle, the min and max angles for speed governing, and the PLA signal, the state of the propeller speed governor is determined.

A method, system and computer software for providing a load anticipation feature for a diesel generating set including a diesel engine, a generator, a speed governor, and an automatic voltage regulator generator in a power system and computer data processor apparatus and computer executable instructions for ascertaining an equivalent linear speed control system whose response approximately matches the non-linear speed response of the diesel generating set; ascertaining at least one programmable parameter of the load anticipation feature based on a real power load applied to the diesel generating set and a desired speed response of the linear speed control system; generating a control output based on a measured real power load and at least one programmable parameter of the load anticipation feature; the speed governor receiving the control output and adjusting the speed of the diesel engine based on the control output.

A method for controlling the speed of an engine driving a generator supplying electrical current to a load includes the steps of monitoring the current, increasing the speed when the current increases and decreasing the speed when the current decreases. The governor apparatus used to carry out the method includes a microcontroller having a current and frequency look-up table embedded in it. For some part of the monitoring step, the engine runs at a first speed, e.g., idle speed, or some moderate speed above idle speed. The increasing step includes detecting an increase in the current to a value, determining from the look-up table the frequency corresponding to the value and increasing the speed of the engine until the frequency of the current is the frequency corresponding to the value. To state it in other words, the new method and apparatus control the engine at a modest speed when the generator is unloaded or lightly loaded and increases engine speed and current frequency with increases in generator load.

A spring retractable reel having a pneumatic retraction governor or air motor for regulating the rewind speed of a spool for taking up a line of material. For example, an air motor includes a rotor having vanes, a first port opening onto one side of the rotor, and a second port opening onto a second side of the rotor. A valve adjustably restricts a continuous flow of ambient air through the second port, and the valve defines an opening sized smaller than the first port. The rotation of the spool and the rotor are fixedly coupled together, for example, with a chain. When the spool rewinds the line of material, the rotor rotates, which in turn draws ambient air through the first port, a portion of which ambient air is restricted from exiting the second port due to the valve thereby compressing air within the air motor to regulate or limit the speed at which the spool rewinds the line of material.

An elevator without an engine room mainly comprises a traction system, a guide system, an elevator car, a door system, a weight balancing system, an electric drive system, an electric control system and a safety protection system. A tractor of the traction system and a speed governor of the safety protection system are mounted in a shaft of the elevator. A control cabinet of the electric control system is mounted on the topmost hoistway door of the elevator so that the engine room is compressed in the shaft of the elevator. A permanent magnet gearless synchronous tractor is used as the tractor. Frequency conversion of the permanent magnet gearless synchronous tractor is controlled by a microcomputer. Transmission of the tractor is independent of a gearbox, so that transmission wastage is reduced greatly. Movable block transmission is used as a traction manner of the tractor. A diversion sheave which is used for rewinding of steel wire ropes of a traction system are mounted at two corners in the lower middle of the elevator car, so that top space of the shaft is saved, and top layer height is reduced. The elevator without the engine room has the advantages of simple structure, convenience to mount and use, reliability, low manufacture cost, capability of lowering energy consumption and the like.

The invention discloses an elevator speed governor, and belongs to the technical field of elevator safety protection devices. The elevator speed governor comprises a box body which is provided with a signal collector, a speed governor wheel which is provided with a lock catch, a centrifugal mechanism which is arranged on the speed governor wheel, a centrifugal hammer reset mechanism which is arranged on the speed governor wheel and connected with the centrifugal mechanism, and a traction rope with the upper end fixed to an upper end and lower end connecting counter weight of a top layer floor. The elevator speed governor is characterized by further comprising a traction rope pressing wheel, a safety tongs braking rope and a braking rope traction mechanism, the traction rope pressing wheel is located in a cavity of the box body and arranged in the middle of a traction rope pressing wheel shaft, the middle of the traction rope is wound on the speed governor wheel and the traction rope pressing wheel, the upper end of the safety tongs braking rope is tied and fixed to the braking rope traction mechanism, the lower end of the safety tongs braking rope is connected with a pair of safety tongs, the speed governor wheel shaft is sleeved with the braking rope traction mechanism, and the braking rope traction mechanism is matched with the signal collector and the lock catch. The situation that negative rotation happens to the speed governor wheel is avoided; the effect of reliably locking a guide rail through the safety tongs is improved; action is reliable, and safety is ensured; the structure is simple, manufacturing is convenient, and assembling is rapid.

A secondary engine speed control mechanism for small internal combustion engines, including an operator control which is manually operable to override an engine running speed which is set by the engine's primary speed control mechanism and governed by the governor. The secondary speed control mechanism may be selectively actuated by the operator in anticipation of an increased engine load to provide a temporary increase or “boost” to engine speed above the set, governed engine running speed. The secondary speed control mechanism may be either mechanically or electrically actuated, and may include an operator actuated, trigger-type mechanism or an electrical switch located on the handle of an implement with which the engine is used.

A carburetor control system includes: a governor device that is coupled to a throttle lever, opens a throttle valve when an operation of an engine is stopped, and opens or closes the throttle valve in accordance with a rotational number of the engine when the engine is in operation; a choke return spring urging a choke lever in a direction to close a choke valve; and an automatic choke device opening the choke valve in accordance with an increase in temperature of the engine. In the carburetor control system, the throttle lever is provided with a drive arm pivoting the choke lever, during a cold operation of the engine, to a position where the choke valve is at an intermediate degree of opening in operative connection with the throttle lever being pivoted by the governor device to a position where the throttle valve is at a degree of opening for idling or a position in a vicinity thereof. Accordingly, it is possible to mechanically open the choke valve to a predetermined intermediate degree of opening, when the engine is in a cold idling state, in operative connection with the throttle valve, so as to be capable of ensuring a fuel-efficient and stable idling state.

When an engine rotation speed in an engine for working machine without a governor mechanism is increase-and-decrease-controlled by switching ignition timings at a predetermined rotation speed, the response delay of the engine rotation speed with respect to the throttle opening operation is suppressed. The engine rotation speeds for switching the ignition timings are set to 4000 rpm and 5000 rpm. When the throttle opening is increased, a first ignition timing is advanced stepwise to a second ignition timing at the engine rotation speed of 4000 rpm so as to be switched to a rotation control characteristic C30 for high speed rotation. When the throttle opening is decreased, the second ignition timing is retarded stepwise to the first ignition timing at the engine rotation speed of 5000 rpm so as to be switched to a rotation control characteristic C05 for low speed rotation. The switching timing of the rotation control characteristic is different between at increase and decrease of the throttle opening. The difference can be reduced to a small amount ΔTH.

Idle speed stability is imparted to a compression ignition engine by processing data values for actual engine speed and desired engine speed to yield a data value for engine speed error; processing (22) the data value for engine speed error according to a governor algorithm for yielding a data value for a mass fuel rate for governed fueling of the engine; c) processing (24) the data value for mass fuel rate for governed fueling of the engine and the data value for actual engine speed to yield a data value for a quantity of fuel to be injected into an engine cylinder during an ensuing stroke of a piston within the cylinder; and d) injecting (30) that quantity of fuel into the cylinder during that stroke.

A method and system to control an engine brake of a vehicle is provided. The vehicle is provided with a combustion engine having cylinders, an exhaust pressure governor (EPG) regulating the air flow out of the cylinders, an intake air throttle valve (ITV) regulating the air flow into the cylinders, pressure sensing means for sensing a pressure downstream of the cylinders, wherein an engine braking torque can be regulated in two different engine braking modes (a, b), a first engine braking mode (a), in which the air flow through the EPG is regulated by a closed loop control using the pressure downstream of the cylinders and the ITV is regulated in a feed forward control dependent of the engine speed and a demanded brake torque; a second engine braking mode (b), in which the EPG is regulated in a feed forward control dependent of the engine speed and the demanded brake torque, and the my regulates the braking torque by a closed loop control using the pressure downstream of the cylinders.

The invention discloses a lift car frame speed limiting device which comprises a ratchet wheel and a pawl, wherein the ratchet wheel is coaxially arranged with a lift car frame diversion sheave, the pawl can be rotatably placed on the lift car frame diversion sheave and is capable of rotating and being inserted into tooth grooves of the ratchet wheel when the lift car frame diversion sheave operates in an over-speed mode. A pair of safety tongs and a draw bar are rotatably placed on the radial surface of the ratchet wheel. When an elevator operates in an over-speed mode, the lift car frame diversion sheave can also rotate in an over-speed mode correspondingly, the pawl rotates and then is clamped inside the tooth grooves of the ratchet wheel, therefore, along with the rotation of the lift car frame diversion sheave, the ratchet wheel rotates correspondingly, the rotating ratchet wheel pulls the safety tongs and the draw bar, the draw bar pulls the safety tongs to enable the safety tongs to move, a lift car can be stopped in time, and a protection role is played. The lift car frame speed limiting device is simple in structure, an over-speed governor steel wire rope, a balancing weight and other components are removed, and manufacturing cost is low.

The invention provides a digital electric speed regulator and an engine speed regulating method. The digital electric speed regulator comprises a rotating speed controller, an actuator and a rotating speed sensor, wherein the rotating speed controller comprises a rotating speed setting potentiometer which is used for setting a desired speed, an F / V converter which is used for converting analog signals of the actual rotating speed sensor into digital signals and sending the digital signals to the rotating speed controller, a comparator which is used for comparing a desired speed with an actual rotating speed, a rotating speed deviation device which is used for calculating the rotating speed deviation value between the desired speed and the actual rotating speed, and a PID regulator which is used for converting the rotating speed deviation value into a PWM signal to control the actuator, the actuator compresses an internal spring under the action of driving currents to achieve linear motion output, and a pull rod of the actuator acts on a speed regulating handle of an engine to control the engine to operate stably at the set rotating speed. The digital electric speed regulator and the engine speed regulating method have the advantages that a power system can be operated and run more safely, the discreteness is good, and stability is good.

The invention relates to an elevator emergency braking device, which comprises an elevator underbeam and safety tongs. A linkage mechanism is further arranged on the elevator underbeam and comprises fixing plates, a linkage shaft and a rocker arm; one end of the rocker arm is connected with the safety tongs; a lifting stopping shaft connected with a steel wire rope of a speed governor is arrangedon the other end of the rocker arm; a reset plate is arranged on the lifting stopping shaft; a reset through hole is formed in the reset plate; spring fixing seats are further arranged on the fixing plates; a core shaft penetrating through the reset through hole is arranged on the spring fixing seats; two reset springs located on two sides of the reset plate sleeve the core shaft; one ends of thereset springs press against the reset plate; and the other ends of the reset springs press against the spring fixing seats. According to the elevator emergency braking device provided by the invention, with the linkage mechanism, two swing arms can be ensured to rotate synchronously so as to drive the safety tongs on two sides of the elevator underbeam to brake synchronously, so that an elevator car is prevented from inclining during an emergency braking process; and after the braking is relieved, the reset springs on the core shaft can drive the swing arms to reset, so that the safety tongs loosens guide rails.

In an elevator system, so as to avoid unwanted safety gear tripping, the kinetic energy, which is caused by inertia of the overspeed governor rope to the lever arm, is dissipated by implementing fluid viscous damping to dampen the rotary movement of the spindle shaft to prevent unwanted safety gear tripping in the event when the upwards movement of the moving mass is decelerated by a machinery brake to perform a quick stop of the moving mass. The fluid viscous damping is effected by a viscous fluid damper which is arranged in the synchronization linkage mounted to the moving mass.

The invention relates to a steam turbine set emergency governor test device comprising an emergency governor; a variable-frequency motor of which the power output end is connected with the rotor of the emergency governor and drives the emergency governor to rotate, wherein the variable-frequency motor and the emergency governor are connected through a fixing device; a rotating speed measuring device which records rotating speed of the variable-frequency motor in real time; a fly ball motion sensor which monitors the fly ball fly-out motion of the emergency governor; and a controller which is connected with the variable-frequency motor, the rotating speed measuring device and the fly ball motion sensor.

The invention discloses a multi-power-source hybrid power system and an energy management method thereof. The system comprises an engine, an oil tank, a hybrid energy storage system, an airborne motorset, a motor propeller, an engine propeller, a clutch, a rectifier, an inverter, an electronic speed regulator, a state of charge estimation unit, a power generation / electric all-in-one machine and acontrol unit. A super capacitor and a storage battery pack are connected to form the hybrid energy storage system, the service life of the storage battery in an original aircraft hybrid power systemis prolonged, and the dynamic power supply performance is improved; in addition, a novel energy management method is provided for the multi-power-source hybrid power system composed of the storage battery pack, the super capacitor and the engine, the fuel utilization efficiency of the engine and the endurance mileage of an aircraft can be improved, the service life of the battery can be further prolonged, and the dynamic power supply characteristic can be further improved.

A tensioner of an elevator speed governor apparatus is arranged with an attenuation devices (30, 40, 53, 62,68) which prevents and attenuates the oscillation generated when the speed governor rope (9) and balance weight (14) librate together up and down. The attenuation devices is configured in the projective area of the balance weight (14).

The invention discloses a safe anti-falling device for a medium-high-rise light-load stacking machine loading platform. The device comprises a driving clamping mechanism and a driven clamping mechanism which are respectively arranged at two sides of the stacking machine loading platform, wherein the driving clamping mechanism is connected with the driven clamping mechanism through a synchronizing shaft, so that the driven clamping mechanism and the driving clamping mechanism synchronously clamp stand columns; the driving clamping mechanism comprises first clamping components, first lifting components, a speed governor and first connecting rod components, and the first clamping components are arranged at the two sides of the stand column; the first lifting components are connected with the first clamping components; the speed governor is connected with the first lifting components; and the first connecting rod components are connected with the first lifting components and the synchronous shaft. According to the embodiment of the invention, the speed governor is arranged, the speed governor acts on the driving clamping mechanism to control braking of the stacking machine loading platform under the stall condition, and the synchronous shaft synchronously controls the driven clamping mechanism and the driving clamping mechanism to be matched to brake from the two sides of the stacking machine loading platform at the same time, so that the stacking machine loading platform is prevented from inclining laterally.

A speed control apparatus for an internal combustion engine including a poppet valve seat and a poppet valve pintle assembly disposed coaxially for variably regulating the flow of air into the engine across the valve seat. The pintle is axially positioned by a stepper motor actuator responsive to an engine speed sensor and electronic controller. The controller varies the axial position of the pintle in accordance with a programmed algorithm to provide any desired engine speed, and especially a fixed engine speed, under a range of engine loads. The invention eliminates the need for a governor, rotary mechanical throttle, and cable or mechanical linkages, and is especially useful for small engine applications such as in powering a portable electric generator, yard equipment, or outboard motor.

The invention relates to a traction driving isochronism speed governor and a multiple-driving-shaft transmission adopting the same. The multiple-driving-shaft transmission comprises a speed governor chamber and a variable-speed gear chamber. According to the invention, the power of an engine is transmitted to an output set of the transmission in a traction driving manner by the isochronism speed governor in the speed governor chamber, a plurality of roller sets are arranged between an input part and an output part of the speed governor in a planetary manner and the output part pushes against the roller sets to move axially so as to be in contact with the input part, therefore, the effect of transmission of power is realized; and meanwhile, the shaft of all driving sets in the variable-speed gear chamber are arranged in parallel at unequal shaft intervals around the shaft of the output set and by taking the shaft of the output set as a center, so that number of gears of the transmission can be increased in limited space. Through adopting the traction driving isochronism speed governor and implementing the technical means of arranging shafts of all driving sets, the problems of low transmission efficiency of a transmission, clutch abrasion and larger occupied area during speed change gear increase in the prior art are improved.

The invention discloses a method for preventing pump effect lifting of an axial flow turbine by using a guide vane closing rule. The whole closing process of a guide vane is divided into three periodsfrom start closing to complete closing during load shedding of the axial flow turbine, wherein the opening degrees of the first period and the end period continue to decrease, the opening degree of the middle period is unchanged, namely the guide vane is paused for a short time in the entire closing process, when the turbine is stopped at the working point, the opening degree of the guide vane isin a braking area, in the pause period, the braking effect is utilized to reduce the rotating speed while a certain flow range is maintained, co-occurrence of high rotating speed and low flow is avoided, and the pump effect lifting is prevented. The method avoids the simultaneous occurrence of high rotating speed and low flow, and the pump effect lifting can be prevented only by modifying the parameters of a governor.

The invention discloses a safety anti-falling device for an elevator. The safety anti-falling device comprises a speed governor mounted on the upper portion of an elevator car, a pair of safety tongs which is mounted on the two sides of the lower portion of the elevator car and matched with a guide rail, and a lifting mechanism connecting the speed governor with the pair of safety tongs, wherein the speed governor comprises a friction wheel tightly attached to the guide rail in a rolling mode, a centrifugal wheel coaxially fixed to the friction wheel, a winding drum which is coaxial with the friction wheel and arranged on a shaft in an empty sleeving mode, a guide wheel located above the friction wheel, and a steel wire rope which is wound on the winding drum, bypasses the guide wheel upwards and is then connected with the input end of the lifting mechanism downwards; a sinking groove is formed in the side, close to the centrifugal wheel, of the winding drum; clamping jaws are distributed on the inner wall of the sinking groove; throwing hooks and springs connected with the throwing hooks are arranged on the centrifugal wheel; the throwing hooks are located in the sinking groove; the throwing hooks are restrained by the springs in the normal state; when the centrifugal wheel is in an overspeed state, the throwing hooks overcome spring force to conduct centrifugal throwing and hook the clamping jaws to lock and fix the centrifugal wheel and the winding drum; and the lifting mechanism can lift and trigger the safety tongs on the two sides to brake at the same time. The safety anti-falling device is mounted on the elevator car as a whole, so that a full-length steel wire rope is omitted.

Provided is an elevator device that includes a wedge-shaped braking element for gripping a guide rail on a lifting body. A speed governor rope is installed in a hoist way in parallel with a suspensionbody of the lifting body. The elevator device is provided with a first biasing part for biasing the braking element upward by gripping the speed governor rope in the speed governor in the case wherethe lifting body has abnormally accelerated, and a second biasing part for biasing the braking element upward by utilizing the motion generated by the falling of the lifting body at the time of breakage of the suspension body. At least one of the first biasing part and the second biasing part is separated from the braking element.

An elevator safety device is provided. The elevator safety device is able to improve a detection precision of a speed governor device, further improving reliability of emergency braking motion. The device has the speed governor device of a speed governor roller rotating and contacting the lead rail and arranged on the elevator cage, and a safety device that processes emergency braking when the elevator cage is overspeed measured by the speed governor device such as the elevator of the emergency braking device. The safety device has an accessory roller mechanism having an accessory roller rotating and contacting the lead rail and arranged on the elevator cage; a swing bearing mechanism that supports the speed governor device and the accessory roller mechanism to swing related to the elevator cage; and a tension rod connected between the speed governor roller and the accessory roller, endowing press related to the lead rail to the speed governor and press related to the second lead rail to the accessory roller.

The invention relates to an eccentric ring-shaped thin governor for a passenger transportation system, capable of being mounted in a narrow space located aside a belt pulley. The governor (11) for a passenger transportation system has a rotator (12a), a base (14) fixed to the rotator (12a), and an eccentric ring (13) rotatably fixed to the base (14) through a rotation mechanism (14a) and having the center of gravity at a position eccentric relative to the center of rotation of the rotator (12a). The base (14) and the eccentric ring (13) are connected together by a restoration mechanism (15) for imparting restoration force to the eccentric ring (13), and the restoration force acts on the eccentric ring (13) to direct it in the direction toward a restoration position. A restoration stopper (16) restrains the eccentric ring (13) to the restoration position.A detection switch (18) in contact with a cam profile (13a) of the eccentric ring (13) during operation of the eccentric ring (13) is provided near the eccentric ring (13), and a controller (20) stops the passenger transportation system by a signal from the detection switch (18).

The invention relates to the technical field of ship anchoring equipment, and discloses an anchoring device for ship berthing. The device comprises a stroke unit, and the stroke unit is composed of astroke unit main body, a stop block, a stroke gear, a metering gear, a mounting groove, a driving sliding block, a ball groove I, a permanent magnet I, a clamping block, a driven sliding block, a ballgroove II, a permanent magnet II and a ball. Through the arrangement of a speed governor, a friction block makes contact with a friction ring through centrifugal force generated during rotation of awheel body, an anchor chain wheel disc is gradually decelerated, at the moment, the friction block is reduced under the action of the centrifugal force, the borne friction resistance is reduced, meanwhile, the friction block is also subjected to tensile force of an elastic piece, so that the friction block is reset, and then an anchor chain continues to fall down and drives the anchor chain wheeldisc to rotate and gradually accelerate, so that the processes of accelerating, resetting and decelerating are circulated, the falling speed of the anchor chain is controlled, manual control is not needed in the process, and the brake error rate caused by manual work is reduced.