Abstract: A two-shaft gas turbine having high operability is provided. The two-shaft gas turbine includes: a gas generator having a compressor, a combustor and a high pressure turbine; a power turbine having a low pressure turbine; a load connected to the power turbine; a motor/generator capable of rotatably driving the gas generator and capable of extracting power from the gas generator; electric equipment controlling the rotational driving and the power extraction by delivering electric power between the electric equipment and the motor/generator; and a control device controlling the electric equipment, wherein the combustor has a plurality of combustion regions to which a fuel is supplied through fuel adjustment means which are independent from each other, and the control device controls a delivery amount of the electric power delivered by the electric equipment corresponding to the number of combustion regions to which the fuel is supplied.

Abstract: Provided is a hybrid construction machine (driving the upper swing structure using a hydraulic motor and an electric motor together) capable of regenerating the energy of the upper swing structure in deceleration or stopping into electric power and using the regenerated electric power for assisting the driving of the upper swing structure, while also being capable of securing satisfactory operational feeling and operation capability even when the electric motor does not operate. When the electric motor is not driven, a controller controls a hydraulic circuit system (specifically, a swing direction/flow rate control valve, a center bypass cut valve and a regulator) so as to increase output torque of the hydraulic motor by an amount corresponding to torque to be compensated for the non-driving of the electric motor compared to cases where the electric motor is driven.

Abstract: The various embodiments herein provide a method and a system for maintaining a constant power output from the low pressure stages of an extraction-condensing type steam turbine under the large variations of extraction or bleed. The method comprises of keeping the flow of working fluid to the low pressure stages constant for a wide range of variations in extraction. The embodiments herein utilizes a pressure reducing and de-superheating stations (PRDS) and an Auxiliary Quick Start™ turbine to maintain the constant flow of working fluid or alternatively two pressure reducing and de-superheating stations (PRDS) for the same. The Auxiliary Quick Start™ turbine or PRDS is used to maintain the constant power output from the low pressure stages of the extraction-condensing type steam turbine.

Abstract: A controller carries out horsepower control to determine a flow rate of a hydraulic pump based on first characteristics and second characteristics, which each define a maximum input setting of the hydraulic pump by a discharge pressure of the hydraulic pump and a flow rate of the hydraulic pump, and based on the discharge pressure. When the discharge pressure is less than a set pressure and when a state where the discharge pressure is equal to or greater than the set pressure has not continued for a set time period, then the controller determines the flow rate based on the first characteristics, and when the state where the discharge pressure is equal to or greater than the set pressure has continued for the set time period, then the controller determines the flow rate based on the second characteristics.

Abstract: An auxiliary power system that is coupled a truck is described. The auxiliary power system pumps a fluid material housed by a truck hydraulic tank and bypasses the truck engine to affect a pump that offload the fluid material. The auxiliary power system includes a housing, an auxiliary engine, a pump, a suction line, a pressure line, and an offload control module. A method for configuring an auxiliary power system to bypass a truck engine is also described. The method includes controlling a pump that is operatively coupled to an auxiliary engine with an offload control module, in which the pump is powered by the auxiliary engine.

Abstract: A control system for a rail vehicle system including a lead powered unit and a remote powered unit is provided. The system includes a user interface, a master isolation module and a slave controller. The user interface is disposed in the lead powered unit and is configured to receive an isolation command to turn on or off the remote powered unit. The master isolation module is configured to receive the isolation command from the user interface and to communicate an instruction based on the isolation command. The slave controller is configured to receive the instruction from the master isolation module. The slave controller causes the remote powered unit to supply tractive force to propel the rail vehicle system when the instruction directs the slave controller to turn on the remote powered unit. The slave controller causes the remote powered unit to withhold the tractive force when the instruction directs the slave controller to turn off the remote powered unit.

Abstract: For increasing power plant efficiency during periods of variable heat input or at partial loads, a motive fluid is cycled through a Rankine cycle power plant having a vaporizer and a superheater such that the motive fluid is delivered to a turbine at a selected inlet temperature at full admission. A percentage of a superheated portion of the motive fluid is adjusted during periods of variable heat input or at partial loads while virtually maintaining the inlet temperature and power plant thermal efficiency.

Abstract: A hydraulic excavator includes a rotation motor (31) for rotating an upper rotating structure. The rotation motor (31) includes an electric motor (32), a hydraulic motor (40), and a reduction gearbox (33). The hydraulic motor (40) includes a motor mechanism (50) and a clutch mechanism (70). The motor mechanism (50), which is a vane-type hydraulic motor, is engaged with/disengaged from a motor shaft (37) by the clutch mechanism (70). When rotation speed of the upper rotating structure is low, and a required value of output torque of the rotation motor (31) is high, an operation of driving the output shaft (35) by the hydraulic motor (40) is performed in the rotation motor (31).

Abstract: A micro-hybrid system (27) is connected to an on-board electrical network (V+) of a first heat engine (28) of a vehicle, whereby the first heat engine having a first cubic capacity which is greater than or equal to a first predetermined value. The system (27) comprises a number equal to two or more of identical starter-alternator devices (1) which are mechanically coupled to the first heat engine (28). The torque and power characteristics of each of the starter-alternator devices (1, 16), while not being adapted to the first heat engine (28), are adapted to a second heat engine having a second cubic capacity which is less than or equal to a second predetermined value equal to a fraction of the first predetermined value. The system is adapted to an application to large heat engines and allows a certain degree of standardization of starter-alternator devices.

Abstract: A power generation system includes a compression unit which compresses a gas, a storage which stores the compressed gas output from the compression unit, a first expansion unit which generates first power and outputs a first exhaust gas, a heating unit which heats at least the stored gas output from the storage, a second expansion unit which generates second power and outputs a second exhaust gas, a first regenerator which performs a first heat exchange between the second exhaust gas and the stored gas output from the storage, to generate a first heat exchange gas used to generate the first power and a first regenerator gas, and a second regenerator which performs a second heat exchange between the first exhaust gas and the first regenerator gas to generate a second heat exchange gas used to generate the second power after heated at the heating unit.

Abstract: A hybrid construction machine drives the upper swing structure using a hydraulic motor and an electric motor together and is capable of regenerating the energy of the upper swing structure in deceleration or stopping into electric power and using the regenerated electric power for assisting the hydraulic motor for driving the upper swing structure. The opening area characteristics of a meter-out restrictor and a bleed-off restrictor of a swing directional control valve are set to become larger than for construction machines driving the upper swing structure with the hydraulic motor alone. Torque of the electric motor is controlled so that the total sum of the actual torque occurring in the hydraulic and electric motors in deceleration or acceleration of the hydraulic motor equals the torque occurring when the opening area of the meter-out restrictor or the bleed-off restrictor is set at the prescribed opening area.

Abstract: Provided is a hybrid construction machine (driving the upper swing structure using a hydraulic motor and an electric motor together) capable of regenerating the energy of the upper swing structure in deceleration or stopping into electric power and using the regenerated electric power for assisting the driving of the upper swing structure, while also being capable of securing satisfactory operational feeling and operation capability even when the electric motor does not operate. When the electric motor is not driven, a controller controls a hydraulic circuit system (specifically, a swing direction/flow rate control valve, a center bypass cut valve and a regulator) so as to increase output torque of the hydraulic motor by an amount corresponding to torque to be compensated for the non-driving of the electric motor compared to cases where the electric motor is driven.

Abstract: A method of autonomously sharing a load between at least two output generation devices, the method including: providing at least two output generation devices, wherein the at least two output generation devices operate autonomously with respect to one another and the at least two output generation devices are in fluid communication with output receiving means adapted to receive output generated by the at least two output generation devices; monitoring output generated by the output generation devices; and cycling each of the at least two devices through an activated mode and a standby mode independently of one another in an automated manner to meet an output demand thereby sharing a load demand between the at least two output generation devices.

Abstract: An ECU calculates a drive torque request value Td0 (S102) when a creep torque generation condition is satisfied (YES in S100), calculates a creep torque reflection rate Kcrp using a gear rattle prevention map instead of an ordinary map (S110) when a vehicle speed V is substantially zero and an engine is in a load drive state (YES in S106 and NO in S108) while a forward drive range is being selected (YES in S104), and calculates a product of Td0 and Kcrp as a creep torque request value Tp (S114). The ordinary map is a map decreasing Kcrp to 0 with increase in brake torque, and the gear rattle prevention map is a map decreasing Kcrp to a predetermined value larger than 0 with increase in brake torque.

Abstract: In a control method of an internal combustion engine exhaust gas control system which is applied to a hybrid vehicle that is powered by an internal combustion engine and an electric motor, an exhaust throttle valve, provided downstream of an exhaust gas control catalyst, is controlled to reduce its opening amount to a target opening amount when it is determined that warm-up control of the internal combustion engine needs to be executed. Next, a target injection quantity of fuel necessary to increase the temperature of exhaust gas flowing into the internal combustion engine to a target exhaust gas temperature is calculated. Then, assist torque from the electric motor is adjusted so that the sum of torque from the internal combustion engine when the fuel injection quantity has been set to the target injection quantity and the assist torque substantially equals a required torque.

Abstract: A cylinder apparatus comprises a piston which is displaced along a cylinder tube under the driving action of a driving section provided for a main cylinder body, while the piston is displaced under the pressing action of a pressure fluid supplied to the cylinder tube. The amount of the pressure fluid supplied to the main cylinder body is increased before a workpiece is engaged with a table section arranged at an end of the main cylinder body so that pressing force, which is applied to the piston, is increased. Accordingly, driving load, which is exerted on the driving section when the workpiece is engaged with the table section, is reduced.

Abstract: In a cogeneration system having a first power plant connected to an AC power feed line between a power network and an electrical load and a first internal combustion engine for driving the first power plant such that exhaust heat of the first engine is supplied to a thermal load, power supply from the first power plant to the power network is interrupted by turning off a switch installed in the feed line, when outage of the power network is detected and a second power plant is operated, such that outputs of the first and second power plants are supplied to the electrical load. With this, it becomes possible to respond to a commercial power network outage for preventing reverse flow of the power output by the cogeneration system into the power network and supplying as much electric power as possible to the electrical load.

Abstract: A method and a position control device for an electrical-fluid power drive comprising a fluid power and an electrical actuator for driving a force output point.

Abstract: According to a prepared program and the signal from a crank angle sensor, a computer switches two operation modes A and B in which an electric motor operates, and the computer creates a pair or pairs of different operation mode phases during the period from an ignition time to the next ignition time. As a result, the sum of the second period BB of the generating phase B and the first period AA of the succeeding driving phase A is long as compared with a conventional engine. If an initial period in an intake stroke or an exhaust stroke is set within the long period sum, it is possible to reduce intake loss or exhaust loss.

Abstract: A turbofan exhaust nozzle includes a fan duct defined between a fan nacelle and core engine cowling. The duct includes an arcuate outlet at the trailing edge of the nacelle. A movable flap is disposed in a minor portion of the fan duct, with a remaining major portion of the fan duct having a constant flow area. The flap may be moved between stowed and deployed positions to locally decrease flow area inside the duct for noise attenuation.

Abstract: A vehicle control device is installed in a hybrid vehicle which can run by a driving force of at least one of an engine and a motor, and charges a battery by driving the engine when an amount of electric power stored in a battery which supplies the electric power to a motor becomes equal to or smaller than a predetermined lower limit. The vehicle control device preheats the engine, a catalyst and the like when an amount of the electric power stored in the battery becomes equal to a value which is set as an amount of stored electric power that is larger than the lower limit. Thus, since the engine and the like have already been warmed when the engine is started, deterioration of emission can be prevented, and the vehicle can run properly.

Abstract: A first exhaust turbo rotary machine is able to assist turbo supercharging by operating as a motor on power generated in a second rotary machine connected to a power axis of an engine. Also, when exhaust energy is large, the first turbo rotary machine operates as a generator so as to make the second rotary machine connected to the engine motive power axis operate electrically, thereby making it possible to add exhaust energy to the engine motive power axis. Consequently, that which results is a compound engine dynamo-electric machine that improves total efficiency of the engine by adding exhaust energy, which is otherwise discarded, to the engine motive power axis. This arrangement increases engine torque in a speed region where exhaust pressure is low by utilizing part of the engine's motive power as a supercharging driving force.

Abstract: This invention provides a clutch engagement detecting apparatus, which can accurately detect the state of engagement of a clutch using a helical spline engagement structure, and a single-shaft combined plant having it, and is constructed as follows: If the difference between the detected value of the rotational speed of a gas turbine and the detected value of the rotational speed of a steam turbine is not more than a detection error by the time a predetermined time elapses after load is charged into the steam turbine, it is determined that the clutch is engaged.

Abstract: A control system for controlling a hybrid transmission including a two-degree-of-freedom differential mechanism is arranged to change a target prime-mover revolution speed of a prime mover so as to decrease an electric power output of first and second motor/generators when a temperature of one of the first and second motor/generators and a power device for the first and second motor/generators is higher than a predetermined temperature, wherein a target driving force of the hybrid vehicle is achieved by a demand prime-mover output generated when an output revolution speed of the hybrid transmission is kept constant and when the target prime-mover revolution speed is determined.

Abstract: In a hybrid automatic transmission of a hybrid electric vehicle equipped with a differential device having two-degree-of-freedom and at least four rotating members respectively connected to a prime mover as an input element, a drive train as an output element, and first and second motor-generators. A specified relationship among inertias of rotating systems relating to the prime mover, output element, and first and second motor-generators, a first lever ratio of a distance between an input element and the first motor-generator to a distance between the input and output elements, and a second lever ratio of a distance between the output element and the second motor-generator to the distance between the input and output elements is determined, so that a center of gravity of a lever on an alignment chart of the hybrid transmission is laid out on the output element or between the output element and the second motor-generator.

Abstract: A control system for use with a master engine and one or more slave engines. The master engine produces a master torque and the slave engines produce slave torques. The master engine and the slave engines have computers that control fueling to the engines. The control system of the invention includes an interface between the control computer for the master engine and the control computers for the slave engines. The master control computer controls the slave control computers through the interface, such that the slave torques are a function of the master torque.

Abstract: A control apparatus for a hybrid vehicle of the present invention determines whether a brake switch flag F_BKSW is “1” or not (step S101), and in the case where the brake is on (“yes”), obtains a deceleration regeneration computation value DECRGN by table retrieval from a #REGENBR table. In the case where the brake is off (“no”), it is determined whether a fuel supply cut delay time regeneration flag F_RGNFCD is “1” or not (step S104). In the case where regeneration is not performed in the fuel supply cut delay time (“no”), a deceleration regeneration computation value DECRGN is obtained by table retrieval from a #REGEN table (step S105). On the other hand, in the case where regeneration is performed in the fuel supply cut delay time (“yes”), a deceleration regeneration computation value DECRGN is obtained by table retrieval from a #RGNNFCD table (step S106).

Abstract: A control system for use with a master engine and one or more slave engines. The master engine produces a master torque and the slave engines produce slave torques. The master engine and the slave engines have computers that control fueling to the engines. The control system of the invention includes an interface between the control computer for the master engine and the control computers for the slave engines. The master control computer controls the slave control computers through the interface, such that the slave torques are a function of the master torque.

Abstract: To secure normal operation and then restart a microprocessor (CPU) when a CPU built into an on-vehicle electronic apparatus runs away. A number of on-vehicle loads driven from a CPU, a watchdog timer for monitoring the CPU to reset and restart it on occurrence of an abnormality, and a memory element for storing generation of the reset output are provided, and load driving elements or a load relay is rendered inoperative by output of the memory element. The memory element is reset by cutting off or reclosing the power switch, and an on-vehicle electronic apparatus returns to a normal state.

Abstract: A hybrid vehicle comprising an an internal combustion engine controllably coupled to road wheels of the vehicle by a clutch, a traction motor coupled to road wheels of said vehicle, a starting motor coupled to the engine, both motors being operable as generators, a battery bank for providing electrical energy to and accepting energy from said motors, and a microprocessor for controlling these components is operated in different modes, depending on its instantaneous torque requirements, the state of charge of the battery bank, and other operating parameters. The mode of operation is selected by the microprocessor in response to a control strategy.

Abstract: A compression ignition type engine, wherein a first combustion where the amount of the recirculated exhaust gas supplied to the combustion chamber is larger than the amount of recirculated exhaust gas where the amount of production of soot peaks and almost no soot is produced and a second combustion where the amount of recirculated exhaust gas supplied to the combustion chamber is smaller than the amount of recirculated exhaust gas where the amount of production of soot peaks are selectively switched between. When the first combustion is switched to the second combustion or the second combustion is switched to the first combustion, the amount of fuel injection is reduced and the amount of reduction of the output torque of the engine is compensated for by the output torque of an electric motor.

Abstract: A pulsing drive system delivers pulsed power signals to the driven wheels of a vehicle for improving the efficiency internal combustion or an electric motor driven vehicles. A controller receives signals such as velocity and demand, and communicates to a means for selectively communicating energy wherein the means for selectively communicating energy converts the pulse signal to a correspondingly conditioned power pulse for powering the vehicle. When combined with a plurality of motors sized with optimal horsepower ranges according to a binary array, an arrangement of such motors provides for an optimally efficient operation of the vehicle by bringing on-line strategically selected combinations of the motors. A control system selectively brings on-line the multiple motors.

Abstract: A machine with a movable element, such as a machine tool and its spindle carrier, that is powered by a motive means to move the element is provided with a counterbalancing system having at least two counterforce means operably connected to the movable element for exerting a counterbalance force on the movable element in opposition to the first force and wherein a first one of the counterforce means has a controllable servomotor means. The control means controls the servomotor means so as to cause the counterbalancing system to exert a substantially constant counterbalance force on the movable element in opposition to the first force. The second one of the counterforce means may be a hydraulic means having a hydraulic cylinder operably connected to an accumulator and a hydraulic piston operably disposed in the cylinder and connected to the movable-element.

Abstract: In a hybrid vehicle in which the front or rear set of wheels is driven by an engine (7) and the other set of wheels is driven by a motor (8), a traveling mode deciding unit (4) is provided with a table for deciding engine throttle opening and motor output, with driving force being distributed in accordance with the engine throttle opening and motor output decided by referring to the table. The table decides the traveling mode based on signals from a detector (2) which detects the remaining life of a battery, a vehicle velocity sensor (1) and an accelerator opening sensor (3). By deciding the traveling mode using such a table, it is possible to distribute driving efficiently in dependence upon the remaining life of the battery.

Abstract: A method and system for providing training mode operation of a multiple engine aircraft simulates the failure of one engine and the simultaneous operation of at least one other engine in an elevated, emergency power condition. The engines (20, 22) are mechanically linked (24) and provide a single power output (26). A training power schedule (56a, 56b) is selected (60, 62) to limit the combined engine power output to a level equivalent to the combined output with one engine inoperative and another in an elevated, emergency power operating condition.

Abstract: A helper drive apparatus for a turbine drive system in which a load is mainly driven by a turbine and a helper motor is used for assisting the drive for the load, comprising: a turbine control circuit, coupled to the turbine, for controlling output power of the turbine in accordance with a turbine power reference signal; a motor control circuit, coupled to the helper motor, for controlling output power of the helper motor in accordance with a motor power reference signal; a speed control means, coupled to the turbine, for detecting a difference between a given speed reference signal and a speed signal indicating an operation speed of the turbine, and providing a master power reference signal representing the difference; and a power sharing ratio control circuit, coupled to the speed control circuit, turbine control circuit, and motor control circuit, and being responsive to a given power sharing instruction signal, for sharing the master power reference signal to the turbine power reference signal and the mot

Abstract: A fluid pressure, free piston engine, such as a centrifugal piston expander, provides a cyclically varying torque to a rotatable output shaft. A unidirectional or overrunning rotational clutch comprising two relatively rotatable elements has one element secured to a unidirectionally rotatable load and the other element driven by the output shaft of the centrifugal piston expander. The engine output shaft further drives, through appropriate gearing, a battery operated, starting motor-generator unit. The motor-generator is employed to initially rotate the expander to sufficient speed to ensure the centrifugal return of the free pistons of the centrifugal piston expander to their radially outermost positions. After start-up of the centrifugal piston expander, the starting motor functions as a generator to recharge the battery during the high torque portions of rotation of the engine output shaft, and during the low torque portions of the power output shaft, again functions as a motor to increase such speed.

Abstract: A plurality of mechanically coupled secondarily controlled hydrostatic machines with variable volume are connected to a line with impressed system pressure fed by a primary unit. By reducing the variable volume to 0 in individual hydrostatic machines the remaining machines are subjected to a higher torque which results in a greater pivot angle of the remaining secondary units. As a result the efficiency and controllability are improved. The changeover is effected in dependence upon an upper and lower switching point corresponding to the pivot angle of the unit remaining in engagement.

Abstract: An induction generator system is disclosed for utilization with an oil producing well having casing gas available at the wellhead and an existing electrical power system. An electric motor is coupled to the existing electrical power system and is utilized as a generator to drive a submersible pump or other electrical load. A gas engine which is powered by the casing gas is mechanically coupled to the electric motor by means of a drive belt and is utilized to drive the electric motor at a speed greater than the synchronous speed of the motor. While the electric motor is driven at a speed greater than its synchronous speed it will generate electrical energy which can be utilized to carry the electrical load. A novel control system is utilized to control the operation of the engine/motor generator system in response to variations in motor speeds, engine operating parameters and load/voltage conditions.

Abstract: A load sharing apparatus and method for coupled master and slave engines having respective throttle actuators to receive initial throttle signals, and load transmitters for transmitting load signals reflecting load on the particular engine. Apparatus has a load comparison structure which receives load signals from the load transmitters of the engines and produces a differential signal reflecting comparison of the engine loads. The apparatus also includes a servo structure which receives the differential signal and produces an output signal which is a servo signal. The servo signal is transferred to the throttle actuator of the slave engine, to change the initial throttle signal to the slave engine by an amount dependent on the servo signal thus sharing loads equally between the master and slave engines.

Abstract: Disclosed herein are apparatus and methods for synchronizing the speeds of two or more engines, each having its own throttle lever connected by an associated cable to a respective hand throttle lever. More particularly, the throttle lever of one of the engines is moved independently of its associated cable and its respective hand throttle lever to increase or decrease the speed of the engine until its speed matches the speed of the other engine or engines, whereby the speeds of the engines may be synchronized without moving their associated cables or their respective hand throttle levers.

Abstract: Governor devices are described for use on single or multi-engine plants, some of whose engines or whose load experiences periodic torque variations, which act upon the torque regulator of at least one of the engines to maintain engine torque equal to load torque and to maintain shaft speed essentially constant.

Abstract: An apparatus for synchronizing the operation of one or more slave engines with that of a master engine in which a servomechanism automatically controls the operation of the slave engines to synchronize them with the master engine while each slave engine and master engine remains directly connected with a manually operable throttle to provide for concurrent operation and overcontrol of the engines so as to dominate the operation of the slave engines by the servomechanism.

Abstract: A control device for a balancer includes a load detector for determining the torque exerted on a driving screw attributable to the load driven and supported thereby. A fluid pressure control device increases or decreases the pressure input to a balancing torque generator in response to the detected load at a given time instant.

Abstract: A drive system for high-lift devices on aircraft having two power drive units, one at each end of the connecting torque tube system, so as to force sum the outputs. A one-way brake always insures against inadvertent retraction of the device but allows extension. An asymmetrical protective device prevents the high-lift device from an asymmetrical condition even after a combined power loss and mechanical failure of the torque tube. The power drive units consist of hydraulic motors driving through a gear box and a no-back brake combination and are controlled by a servo valve.

Abstract: Governor devices are described for use on multi-engine plants, some of whose engines experience periodic torque variations, which act upon the torque regulator of at least one of the engines to maintain a steady torque and speed of the common final power output shaft of the plant.

Abstract: The invention is practiced by providing a plurality of turbine-driven systems each producing an output proportional to a respective control signal, means for generating a respective first output signal for each of the turbine-driven systems proportional to a respective first system-output indicating parameter, means for generating a respective error signal for each of the turbine-driven systems proportional to any deviation of a respective second system-output indicating parameter from a respective complementary portion of the combined second system-output parameters of the systems, and means for generating the respective control signal of each of said turbine-driven systems and proportional to any deviations of respective ones of the first output signal and the error signal from a respective predetermined reference value of said first parameter, whereby a predetermined relationship of the individual outputs of the turbine-driven systems is maintained.

Abstract: The apparatus includes a master control unit associated with a first locomotive and a slave control unit associated with a second locomotive. Each of the control units is identically constructed to include an electronic processor and memory. The memory includes a program which is also identical for both units. Each of the units is connected to at least a portion of a train line extending between the locomotives, and inter-unit communications are accomplished over only a single spare line within the train line. Under control of the program the control units detect the setting of the throttle in the first locomotive, and in response thereto the control units operate the throttle of the second locomotive so that the combined operation of the first and second locomotives functions at an optimum power output-to-fuel consumption ratio within a predetermined range of power levels for each setting of the throttle in the first locomotive.

Abstract: A hybrid vehicle comprises an internal combustion engine and a motor/generator, which are controlled by a microcomputer. The internal combustion engine is rendered capable of a running operation in a region of a better fuel consumption characteristic. Outside the above described region, the motor is cooperatively driven with the internal combustion engine to provide a driving torque or only the motor is energized by a battery to provide a driving torque. On the other hand, when the hybrid vehicle is driven with a torque smaller than a predetermined lower limit value of the torque of the internal combustion engine, the redundant torque is used to drive the generator, so that a regenerative power is absorbed by the battery.

Abstract: A control system equalizes the torques of a lead and a slave engine driving a common load by comparing the throttle settings of the engines and controlling the slave engine throttle with a speed signal equal to the algebraic sum of the lead engine speed signal and a control adjustment signal equal to the sum of an adjusted, selected gain times the sum of the instantaneous error signal and the integral of the error signal over an adjusted, selected reset time.