Abstract: An automatic aircraft powerplant control system includes a throttle servo for adjusting a throttle valve via a throttle control linkage. A throttle control lever provides a user input to the throttle servo, and a throttle controller controls the throttle servo for controlling a throttle valve. A propeller servo is provided for adjusting a propeller governor setting of an engine. A propeller control lever provides a user input to the propeller servo, and a propeller controller controls the propeller servo. A mixture control servo is configured for providing a mixture control output to the engine via a mixture control linkage for adjusting an air-fuel mixture. A mixture controller is configured for controlling the mixture control servo.

Abstract: The present disclosure relates to a method for operating an internal combustion engine (IO). The method includes generating a pressure pulse in an exhaust gas system of the internal combustion engine (IO). The method also includes supplying exhaust gas from a combustion chamber of a cylinder during an exhaust outlet stroke of the cylinder into an inlet channel of the cylinder by propagating the pressure pulse from the exhaust gas system into the combustion chamber of the cylinder. The method further includes supplying the exhaust gas from the inlet channel of the cylinder into the combustion chamber of the cylinder during an intake stroke of the cylinder. By means of internal residual gas control (residual exhaust gas control), the method permits the exhaust gas temperature to be raised in at low load without negatively influencing the full load performance of the internal combustion engine (IO).

Abstract: A driver assistance system is configured to determine or receive a setpoint value for a control variable of the motor vehicle, to determine or receive an actual value for the control variable of the motor vehicle, to determine a correction value for reducing a deviation between the setpoint value for the control variable and the actual value for the control variable depending on the deviation between the setpoint value for the control variable and the actual value for the control variable, to compare the correction value with a first threshold value, and at least to limit a future change in the setpoint value for the control variable which increases the deviation between the target value for the control variable and the actual value for the control variable depending on the comparison of the correction value with the first threshold value.

Abstract: A mechanical system for calibration during a chemical feed process includes a ball valve that includes three openings. The ball valve is in communication with a lever, which when turned to a fill position, allows the filling of a drawdown cylinder for calibration. The ball valve automatically returns to its original default position within about a minute with a spring force automatically pushing it back to its start position.

Abstract: A twist mechanism for twisting a rotary-wing blade (2). A twist member (8) is movable by an actuator (11) of the centrifugal force type, which twist member has at least one flyweight (14) for driving a rotary member (13) about a pivot axis (A). The flyweight (14) is radially movable on the rotary member (13) by movement means. The centrifugal force FC to which the flyweight (14) is subjected as a result of the blade (2) being caused to rotate induces drive torque CM for causing the rotary member (13) to pivot, thereby causing the twist member (8) to be moved. The twist member (8) is in engagement with the blade (2) at its free end and is connected to the rotary member (13) via remote mechanical transmission means (12).

Abstract: An intake control device includes: an air cleaner disposed above an engine; a pair of right and left intake ducts projecting toward a front of a vehicle body from the air cleaner to take an outside air in the air cleaner; and a sensor unit coupled to a throttle cable extended from a throttle grip, and detecting an operation amount of accelerator, in which the sensor unit is disposed between the pair of right and left intake ducts at a position above the engine and below the air cleaner.

Abstract: An engine includes a carburetor, a governor assembly, and a vacuum actuator. The carburetor includes a throttle plate configured to control a fluid flow, a throttle lever coupled to the throttle plate, and an intake port in fluid communication with an engine vacuum pressure. The governor assembly includes a governor, a governor linkage coupled to the governor and the throttle lever, and a governor spring coupled to the throttle lever to bias the throttle plate towards the fully open position. The vacuum actuator includes an actuator housing, a pressure-sensitive member positioned in the actuator housing, an actuator linkage directly coupled to the governor spring and also coupled to the pressure-sensitive member for movement in response to the engine vacuum pressure, and an actuator spring coupled between a fixed attachment point and the actuator linkage to bias the actuator linkage to increase the tension on the governor spring.

Abstract: An internal combustion engine and method of operating such an engine are disclosed. In some embodiments, a process governed by a controller determines an effective gear ratio of a variable-displacement hydrostatic drive motor and engine combustion events so that an output velocity tends to meet a desired velocity indicated by an accelerator pedal. Also, in some embodiments, the engine includes one or more of: (a) one or more active check valves governing hydraulic fluid flow into or out of one or more cylinders; (b) a free-wheeling section allowing for hydraulic fluid exiting a load (e.g., the drive motor) to proceed back to a link by which the fluid is driven by the engine to the load; and (c) a perforated cone fuel atomizer associated with an intake valve. Further, in some embodiments, two or more of the pairs of cylinders are hydraulically coupled in parallel relative to one another.

Abstract: A control system for an engine including a fuel delivery system and an ignition source is provided. The control system includes a detector, a processor, and at least one actuator. The detector is configured to sense a signal to change from a compression ignited fuel to a spark ignited fuel. The processor is configured to receive the signal from the detector and generate an actuation signal. The actuator is configured to receive the actuation signal, vary an operating speed of the engine, and selectively control at least one of the fuel delivery system and the ignition source.

Abstract: An engine method, comprising turning off a second cylinder group in response to engine load falling below a first threshold, the second cylinder group including a first outer most cylinder and its immediately adjacent cylinder and turning on the second cylinder group in response to engine load raising above a second threshold and operating a first cylinder group constantly throughout engine operation; the first cylinder group including a second outer most cylinder and its immediately adjacent cylinder. By this method, engine efficiency may increase during partial load operating conditions from low engine loads.

Abstract: A speed governor is used with an engine having a crankshaft and a balancer shaft arranged substantially in parallel to the crankshaft, in which a drive gear provided in the crankshaft and a driven gear provided in the balancer shaft are meshed with each other so as to transmit mechanical power. The speed governor includes a plurality of flyweights pivotally supported on the driven gear of the balancer shaft by the plurality of support pins. The driven gear has a recess portion on an end surface thereof, and the support pins supporting the flyweights are arranged in the recess portion. Each of the support pins has two ends in a longitudinal direction and through holes are respectively located at the ends of the support pins.

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: An engine control device includes a governor lever, a centrifugal governor, a control lever operated to oscillate between a low-speed position and a high-speed position, and a governor spring expandedly provided between the control lever and the governor lever. An automatic choke device is connected to a choke valve of a carburetor. A play is provided between the governor lever and the governor spring. The play holds the governor spring in a free state during rotation of the control lever from the low-speed position to the high-speed position by a predetermined angle. A subsidiary spring is provided between a fixed structure and the governor lever so as to constantly urge the governor lever in a direction to open the throttle valve. A spring constant of the subsidiary spring is smaller than that of the governor spring.

Abstract: A wheel speed detection system including a rotator, a sensor head, a detector, a pulse converter, a speed calculator and a threshold shifter. Plural concave and convex portions are formed on a periphery of the rotator rotating together with a wheel. The sensor head includes a coil to generate an alternate current magnetic field. The detector excites the coil to generate an eddy current on the concave and convex portions, and outputs alternate current detection signals corresponding to changes in the eddy current generated with rotation of the rotator. The pulse converter converts the alternate current detection signals into pulse signals according to preset threshold levels. The speed calculator calculates rotational speed of the wheel based on the pulse signals. The threshold shifter shifts the threshold levels corresponding to a difference between a default average and an average of the alternate current detection signals actually outputted from the detector.

Abstract: A method and a device for controlling the speed of a vehicle are described. In the transition from a dynamic to a steady-state operating state, the initially accepted setpoint value is corrected using a correcting value which depends on the system deviation prevailing at the time when the longitudinal acceleration of the vehicle has reached, exceeded, or fallen below a predetermined threshold value.

Abstract: A governor system is provided for limiting a degree of throttle travel of a throttle as a function of rotational speed of a drive axle. The governor system includes a governor shaft rotatably supported by the drive axle and operably interconnected to internal components of the drive axle for varying a feedback torque, a governor arm fixed for rotation with the governor shaft, a throttle cable interconnected with the governor arm for applying a first pulling force to the throttle and an accelerator cable resiliently interconnected with the governor arm to apply a second pulling force to the governor arm. The second pulling force induces rotation of the governor arm for applying a torque on the governor shaft. The torque balances with the feedback torque of the governor shaft for limiting the second pulling force as a function of the rotational speed of the drive axle.

Abstract: A governor for an engine includes a speed sensor coupled to the engine that moves in response to changes in engine speed. The governor further includes a linkage coupled between the speed sensor and a throttle member to move the throttle member between a first position and a second position. A governor spring couples to the throttle member. A friction spring couples to the throttle member and includes a coil portion frictionally engaged with the linkage.

Abstract: A governor for an engine including a speed sensor, a throttle member, a linkage, a primary spring, and a secondary spring. The speed sensor moves in response to changes in a speed of the engine. The linkage is coupled between the speed sensor and the throttle member to move the throttle member between a first position and a second position in response to the speed of the engine. The primary spring directly couples the throttle member to the engine to bias the throttle member in a first direction, and the secondary spring directly couples the throttle member to the engine to bias the throttle member in a second direction at least partially opposite to the first direction.

Abstract: A governor system is provided for limiting a degree of throttle travel of a throttle as a function of rotational speed of a drive axle. The governor system includes a governor shaft rotatably supported by the drive axle and operably interconnected to internal components of the drive axle for varying a feedback torque, a governor arm fixed for rotation with the governor shaft, a throttle cable interconnected with the governor arm for applying a first pulling force to the throttle and an accelerator cable resiliently interconnected with the governor arm to apply a second pulling force to the governor arm. The second pulling force induces rotation of the governor arm for applying a torque on the governor shaft. The torque balances with the feedback torque of the governor shaft for limiting the second pulling force as a function of the rotational speed of the drive axle.

Abstract: A stabilizer system creates a temporary droop to stabilize a governor for an internal combustion engine and reduce permanent droop and hunting of the engine. The governor adjusts the position of a throttle in response to engine speed to achieve a desired engine speed. The stabilizer system temporarily applies a force on the governor that initially resists sudden movement of the governor arm, and causes a temporary speed droop. The initial resistance of the stabilizer system helps prevent the governor from overshooting the desired speed and hunting. The temporary droop is then removed to permit the governor to achieve the desired speed to help prevent permanent droop.

Abstract: In an inclined engine where a cylinder (2) projects from a crank case (1) obliquely and upwardly, when seen in a direction parallel to a center axis (3) of a crank shaft (10), under a specific observation condition in which the cylinder projecting direction is deemed as an upper right side, a valve operating cam gear (5) meshes with a crank gear (4) from a horizontal right side of the latter and a governor gear (6) is arranged in a space defined below a portion where the valve operating cam gear (5) meshes with the crank gear (4). This governor gear (6) engages with the valve operating cam gear (5) from a lower left side of the latter.

Abstract: A governor system is provided for limiting a degree of throttle travel of a throttle as a function of rotational speed of a drive axle. The governor system includes a governor shaft rotatably supported by the drive axle and operably interconnected to internal components of the drive axle for varying a feedback torque, a governor arm fixed for rotation with the governor shaft, a throttle cable interconnected with the governor arm for applying a first pulling force to the throttle and an accelerator cable resiliently interconnected with the governor arm to apply a second pulling force to the governor arm. The second pulling force induces rotation of the governor arm for applying a torque on the governor shaft. The torque balances with the feedback torque of the governor shaft for limiting the second pulling force as a function of the rotational speed of the drive axle.

Abstract: Methods and apparatus for testing operation and diagnosing faults in an engine including an electronic control unit. A diagnostic computer is coupled to the electronic control unit and displays engine testing and diagnostic text messages in any one of a plurality of selectable languages, energize ignition circuits on demand, display menu screen displays associated with engine testing, diagnostics and service, and generate summary screen displays and reports for later use.

Abstract: A general purpose air-cooled, four-cycle engine in which a first ball bearing supporting the output shaft of the crankshaft is larger than the second ball supporting the other end of the crankshaft, and the first bearing has an external diameter which is approximately equal to or greater than the distance from the crankshaft to the camshaft. The camshaft driven by the crankshaft is supported by sliding bearings. The governor which controls the rotation of the engine and which is driven by the rotation of the crankshaft is enclosed in the crankcase on the same end as the cooling fan, which is the end opposite the output end of the crankshaft. This invention fulfills the demand for a smaller crankcase; does not make use of special bearings; and achieves a greater bearing capacity through the use of large-diameter standard-precision ball bearings. In addition, it simplifies the required processing and allows the assembly process to be automated.

Abstract: An induction system and method for enhancing the efficiency and performance of an internal combustion engine connectable between an air filter and an intake manifold of an internal combustion engine is provided.

Abstract: A bearing boss (3) is protruded from a front wall (2) of a crankcase (1), and a crankshaft (4) is supported at its front journal portion (5) by this bearing boss (3). Interlocking shafts (7) are disposed within the crankcase (1) in parallel to the crankshaft (4), and a crank gear (6) and input gears (8) attached to the interlocking shafts (7) are arranged coplanarly. Balancer shafts (11) are used as the interlocking shafts (7), governor weights (9) are mounted to the rear surface (12) of the input gear (8), and a governor sleeve (10) is located behind the governor weights (9).

Abstract: In an engine with a mechanical governor and decompression device, a centrifugal weight of a decompression device is supported by a first side surface, which first side surface faces a valve actuating cam, of opposite side surfaces of valve swingable manner in the centrifugal direction. A governor weight of a mechanical governor is supported by the second side surface of the opposite side surface of the cam gear. A member for transmitting a centrifugal force of the governor weight is supported by a valve actuating camshaft outside the second side surface of the valve actuating cam gear.

Abstract: A vehicle control system embodying an engine driving the vehicle and, selectively, a power takeoff shaft. When the power takeoff shaft is being driven, a governor controls the speed of the engine. A device is provided for detecting the shaft speed and the engine will be slowed when the shaft speed is exceeded to protect element being driven by the power takeoff shaft in the event the governor fails.

Abstract: Several embodiments of vehicles having automatic or manual speed control. The manual speed control permits the operator to control the speed of the engine and the automatic speed control is effective when a power takeoff shaft is being driven for automatic speed control under this condition. In each embodiment, the automatic speed control includes a governor that is driven only when the power shaft takeoff is being driven. In one embodiment, a throttle valve controls the engine speed and the manual and automatic speed controls alternatively operate the throttle valve through selectively engageable couplings that are operated in response to shifting into and out of the power takeoff mode. A number of other arrangements are also illustrated and described that provide different throttle valve arrangements for controlling the speed automatically or manually.

Abstract: Several embodiments of vehicles having automatic or manual speed control. The manual speed control permits the operator to control the speed of the engine and the automatic speed control is effective when a power takeoff shaft is being driven for automatic speed control under this condition. In each embodiment, the automatic speed control includes a governor that is driven only when the power shaft takeoff is being driven. In one embodiment, a throttle valve controls the engine speed and the manual and automatic speed controls alternatively operate the throttle valve through selectively engageable couplings that are operated in response to shifting into and out of the power takeoff mode. A number of other arrangements are also illustrated and described that provide different throttle valve arrangements for controlling the speed automatically or manually.

Abstract: Automatic control and fuel saving means for internal combustion engines, comprising: at least one centrifugal speed sensor having at least one pair of flyweights, which flyweights are disposed in the guide tracks on a holder, the said guide tracks are such orientated that the components of the centrifugal forces of the flyweights in the guide track directions substantially match the elastic forces of the spring exerting on the flyweights; a mode shifting device connected to the said speed sensor and to the manual operating mechanisms, the said mode shifting device alternately puts the engine into the automatic control mode by the said speed sensor or into the manual control mode.

Abstract: A V-type internal combustion engine in which cylinders each including a cylinder skirt portion projecting into a crankcase are arranged in a V-shape, a governor device is disposed within the crankcase, central axes of the cylinders are offset from each other in an axial direction along a crankshaft supported in the crankcase, and a rotational speed transmission system for transmitting a rotational speed of a governor gear to a governor lever shaft is engages a rearward side of the cylinder skirt portion of a cylinder spaced forward from a rearward most cylinder as viewed among the crankshaft central axis. A single intake manifold is adapted to bridge cylinder heads in a V-bank defined between the cylinders. A carbureter is in fluid communication with the intake manifold. One end of the governor lever shaft is disposed in the V-bank. An intake control for controlling the carbureter in cooperation with one end of the lever shaft is disposed in the vicinity of the carbureter.

Abstract: An electronic control circuit is disclosed for an engine and load speed governor of the type comprising an overriding throttle closing device. The control circuit comprises engine speed signal generating circuit and a load speed generating circuit to provide electrical speed signals to the input of a microprocessor. The microprocessor develops motor control signals for a reversible electric motor which drives the actuator for the throttle limiting device. The motor control signals for operation in the close throttle direction and the open throttle direction are developed at different outputs of the microprocessor and applied to respective inputs of a motor driver circuit. The motor control signals produced by the microprocessor are time modulated, either pulse rate or pulse width, in accordance with the operating conditions of the engine or load to provide operation of the motor at precisely controlled slow speeds.

Abstract: A governor sleeve is axially displaceable on a stationary governor shaft and has an inner space which is defined by one end of the governor shaft and which communicates with the inner chamber of a pump housing charged with fuel. The inner space varies in volume drawing thereinto and discharging therefrom fuel in response to axial displacement of the governor sleeve.

Abstract: Controls are provided to directly or indirectly avoid operation of the internal combustion engine of a motor vehicle in a range of speed and output power which is detrimental to engine efficiency. The controls become operative upon attainment of a predetermined limit value for engine parameters.

Abstract: A speed control for an engine having a throttle and a drive shaft made up of a selective gear connected to a differential gear and a responsive gear connected to a second differential gear all rotatable about a common axis. Two differential pinions rotatably connected to the differential gears and supported on a pinion shaft disposed at right angles to the axis. The center of the pinion shaft being attached to a drum mounted concentric to the axis and having an actuating member connected from the drum to the engine throttle and a reference motor operatively connected to the first side gear to drive it at a selected speed and a drive shaft from the engine driving the second side gear.

Abstract: A governor for controlling the speed of a drive shaft comprising a flywheel mounted to a revolving drive shaft by a pair of diametrically opposed pins extending through the flywheel, along a diametrical line of the flywheel, and being respectively received by two oppositely disposed spiral slots along the cylindrical wall of the drive shaft. The flywheel and pins are slidably mounted to the drive shaft such that an increase or decrease in the speed of revolution of the drive shaft will cause the pins to move along the shaft in the slots and the flywheel to traverse along the axis of rotation of the drive shaft. Mechanical linkage is connected to the flywheel so that the movement of the flywheel will engage or disengage a friction clutch drive assembly operatively associated to the drive shaft, or alternatively, will control the rate of flow of fuel to an engine operatively connected to the drive shaft.

Abstract: The invention disclosed embraces a charge forming method of and apparatus embodying an instrumentality responsive to engine vibrations or disturbances brought into operation when the engine reaches a predetermined speed to automatically deliver excess fuel to the engine thereby momentarily providing a nonignitible mixture preventing overspeeding of the engine.