Abstract: A system for powering equipment used in a hydraulic fracturing operation, the system including at least one first generator in electrical communication with a first switchgear for providing power to primary components of a hydraulic fracturing operation, and at least one second generator in electrical communication with a second switchgear for providing power to backup components of a hydraulic fracturing operation. The at least one first generator is independent of the at least one second generator so that if the at least one first generator loses the ability to generate electricity, the at least one second generator can continue to generate electricity.

Abstract: A turbomachine including: a combustion chamber, with a fuel injection device in the combustion chamber; a supply mechanism supplying fuel to the fuel injection device; a mechanism determining instantaneous variation of fuel flow rate of the supply mechanism; and a regulation mechanism regulating the fuel flow rate of the injection device according to the instantaneous variation of the fuel flow rate of the supply mechanism determined by the determination mechanism.

Abstract: In a control apparatus for a general-purpose internal combustion engine including a generator as a power supply, the generator includes a main generator coil supplying power to the stepping motor, and an auxiliary generator coil supplying power to an ignition device of the engine. The apparatus includes ignition timing controller for, when starting the engine by a manual starter, detecting that an engine speed reaches or exceeds a predetermined engine speed not exceeding a connecting rotation speed of a centrifugal clutch to retard an ignition timing of the engine, thereby suppressing increase in the engine speed to less than the connecting rotation speed, and for restoring the ignition timing to its normal timing after a predetermined time elapses from start of retarding the ignition timing. Accordingly, it suppresses overshooting of an engine speed above the connecting rotation speed even if a delay occurs in closing a throttle valve by a delay in activating the motor.

Abstract: An outdoor power tool may include an engine, a carburetor configured to provide a fuel and air mixture to the engine based on operation of a throttle assembly, a selector and a throttle release actuator. The selector may be operably coupled to the throttle assembly to control a position of the throttle assembly in a selected one of a plurality of throttle positions. One of the throttle positions may be an idle position and each of the other throttle positions may be selectable by an operator via manual positioning of the selector. The throttle release actuator may be configured to return the selector from any one of the throttle positions to the idle position responsive to operator actuation of the throttle release actuator.

Abstract: A governor system is provided that includes a governor having an actuator, and a coupler link configured to couple at a first end to the actuator and at a second end to a throttle of an engine being controlled. One or more mechanical characteristics of the coupler link, the throttle, an actuator arm of the actuator, or some combination thereof, are specific to the engine and configured such that each position of the actuator causes a given output of the engine independent of particular characteristics of the engine.

Abstract: An throttle body for rotating a valve shaft of an air-intake throttle valve through a decelerating mechanism by a motor and change the opening area of an air-intake passage by rotating the valve shaft is equipped with a lever portion that is disposed so as to be interlocked with the decelerating mechanism and regulates the opening degree of the air-intake throttle valve under the full-open state, and an adjusting screw that is threadably inserted from the outside of the body portion and abuts against the lever portion in the body portion to change the opening degree of the air-intake throttle valve under the full-open state.

Abstract: There is the operation device for an engine. An operation device for an engine performs a throttle operation of the engine which is disposed apart from an operation unit operated by an operator. The operation device includes: a link member rotatable with respect to a base in response to an operation of the operation unit; a cam member fixed to the base, and disposed at a distance from the center of rotation of the link member, the distance changing continuously according to the angular position of the cam member around the center of rotation; a cam follower connected to the link member and configured to along the cam member; and a throttle drive member for connecting the cam follower to a throttle operation unit of the engine.

Abstract: An automatic management and control system for controlling a transport motored vehicle engine idle conditions, operation of vehicle accessories and engine controls when the vehicle is at a rest condition. This system has a controlled unit with a programmable computer having a memory for storing instructions for execution of an interactive management control program by the control unit. The control unit is conditioned by the operator of the vehicle to operate in a cabin heating mode or a cabin air-conditioning mode. The control unit is also conditioned by the control program to enable a defeat protection circuit to control a fast idle switch function in the cabin to prevent a vehicle operator person to attempt to override a idle shut-down mode of the control module when enabled for a set time period whereby to ensure autonomous automatic engine control by the control unit when the vehicle is in the rest condition with the control unit enabled to thereby optimize fuel efficiency.

Abstract: An electronically controlled throttle control apparatus prevents a throttle valve from malfunctioning due to deterioration in sliding resistance ascribable to abrasive dust at a sliding contact portion between a valve gear of a geared reduction device and a coil spring. The outer periphery of a spring inner periphery guide is provided with a plurality of groove portions as abrasive dust removing means for removing abrasive dust at least from a sliding contact portion between the outer periphery of the spring inner periphery guide and the inner periphery of a default spring, so that individual edge portions of the plurality of groove portions can rub the inner periphery of the default spring to scrape off abrasive dust from the inner periphery of the default spring and direct the abrasive dust into the plurality of groove portions.

Abstract: A method in which a plug-in pump, controlled by oblique edges, is inserted with the aid of an adjusting device into a pump fitting of an internal combustion engine and which without subsequent correction of the supply quantity guarantees an identical supply quantity for all the plug-in pumps of one engine. With a supply quantity adjusting member held firmly in a test position, the plug-in pump is inserted into the test pedestal and rotated until such time as the supply quantity corresponds to the set-point supply quantity, this rotational position marked by a slash mark on the flange of the plug-in pump. With a governor rod, which is part of the engine, locked in the basic test position, a second slash mark is subsequently made on the pump fitting by means of a dummy pump. Once the dummy pump has been removed, the plug-in pump is secured in the pump fitting of the engine with the slash marks in alignment.

Abstract: A rotary magnet control element for a distributor injection pump is proposed, which is universally movable by an adjustment means while an engine in running for adjustment of the position of the rotary magnet relative to an annular slide which is reciprocably disposed on a pump piston.

Abstract: Governors for diesel engines use a torque-spring to control the slope torque-rise curve as the rack actuator moves between the balance point and full load position. At present, it is difficult to adjust the torque spring mechanism to obtain the correct amount of rack movement between these positions. In the present invention, a first adjustment screw (33) is engageable with the torque spring (20), a second adjustment screw (34) is engageable with a fixed stop member (24), and a means (40) concurrently moves the first screw (33) in spring-deflecting engagement with the torque spring (20) and moves the second screw (34) towards engagement with the stop member (24) in response to fuel-increasing movement of the rack actuator (12), with further fuel-increasing movement of the rack actuator (12) being prevented by engagement of the second screw (34) with the stop member (24).

Abstract: A tool (40) for selectively adjusting the relative angular positions of a fuel pump camshaft (14) and an engine main shaft to minimize the effects of gear lash and thereby optimize fuel pump timing, including a hollow first shaft (50) which is adapted to rotate with a driven gear (36) rotatably received on a tapered sleeve (26) fixed to the camshaft (14), and a second shaft (66) coaxial with and reciprocably and rotatably received within the first shaft (50) and adapted to be coupled to the camshaft (14) for rotation therewith. The second shaft (66) is coupled through a planetary gear arrangement (90-94, 97-104) to the first shaft for rotation of the main shaft. Structure is provided for adjusting the relative angular positions of the first and second shafts (50,66) and for axially translating the first shaft (50) to lock the driven camshaft gear (36) on the tapered sleeve (26).

Abstract: An internal combustion engine comprising a combustion chamber and an accumulation chamber which are interconnected to each other via a mixture passage. An accumulation valve is arranged in the mixture passage and opened during the compression stroke. The mixture passage is connected to the combustion chamber at an opening formed on the peripheral inner wall of the cylinder head. The opening of the mixture passage is covered by the rear face of the raised portion formed on the top face to the piston when the piston reaches the top dead center.