A system for operating a train having one or more locomotive consists with each locomotive consist comprising one or more locomotives, the system including a locator element to determine a location of the train, a track characterization element to provide information about a track, a sensor for measuring an operating condition of the locomotive consist, a processor operable to receive information from the locator element, the track characterizing element, and the sensor, and an algorithm embodied within the processor having access to the information to create a trip plan that optimizes performance of the locomotive consist in accordance with one or more operational criteria for the train.

Trip optimization system and method for a train

A system is provided for operating a railway network including a first railway vehicle during a trip along track segments. The system includes a first element for determining travel parameters of the first railway vehicle, a second element for determining travel parameters of a second railway vehicle relative to the track segments to be traversed by the first vehicle during the trip, a processor for receiving information from the first and the second elements and for determining a relationship between occupation of a track segment by the second vehicle and later occupation of the same track segment by the first vehicle and an algorithm embodied within the processor having access to the information to create a trip plan that determines a speed trajectory for the first vehicle. The speed trajectory is responsive to the relationship and further in accordance with one or more operational criteria for the first vehicle.

Method and apparatus for optimizing a train trip using signal information

A microprocessor-based electronic control system for a powershift transmission having at least one proportional actuator, such as a solenoid-operated proportional valve, is disclosed. The controller operates a plurality of on-off solenoid valves and the solenoid-operated proportional valve to provide operator-selected gear shifts in both forward and reverse directions having controlled clutch engagements achieved by modulation of clutch engagement pressure by the proportional valve. The key parameters associated with the gradual clutch engagement are all easily varied by the controller, most under program control during operation, to provide for optimized clutch engagments for smooth gearshifts. The key parameters include: fast-fill clutch delay, initial clutch engagement pressure, rate of increase of clutch engagement pressure, and the length of the reduced pressure clutch engagement interval. The electronic controller also automatically modifies selected parameters in accordance with sensed changes in temperature, magnetic flux coupling between solenoids, and variations in the voltage supply provide to the series combination of the solenoid coil of proportional valve and its solenoid driver circuit. Preferred methods of operating the electronic controller and powershift transmission are also disclosed.

Electronic control system for powershift transmission

A vehicle control apparatus and method therefor has a number of controllers (50, 63, 56) interconnected with one another by a data highway (10), the engine controllers being formed for example by a CPU. The engine controllers are each connected to a sensor for sensing a vehicle parameter and the controllers are also connected to a respective actuator (53, 58) for varying the associated vehicle parameter. The apparatus is arranged so that the controllers operate in cooperation with one another so that two or more controllers cooperate to control the same object or purpose. As an example (shown in Figure 20) an engine controller (50) provides torque data to a transmission controller (63) which in turn provides data to a throttle controller (56), whereby a gear shift is effected by the transmission controller (63) in synchronism with the throttle controller (56) changing the position of a throttle actuator so that a jerk-free gear shift is effected. In another embodiment (shown in Figure 33) an engine controller (50) cooperates with a throttle controller (56) and a suspension controller (64) whereby data from the engine controller determining whether the vehicle is accelerating or braking is transmitted to the throttle controller (56) and the suspension controller (64) and the throttle position is adjusted in synchronism with the suspension controller (64) for adjusting the front-back ride height of the vehicle. Thus, for example, when the vehicle is braking, the throttle controller closes the throttle and the suspension controller increases the ride height of the front dampers and reduces the ride height of the rear dampers. Other embodiments control ignition timing and fuel injection in cooperation with gear shift (Figure 37), control fuel injection pulse width and ignition timing in cooperation with a knock detector controller (Figure 49), and upon detection of abnormal data received from sensors display a warning of the abnormality, and in the event of seriously abnormal data being detected transmits a pseudo signal to ensure that the vehicle keeps running.

Vehicle control apparatus and method therefor

A method of controlling speed reduction ratio in a continuously variable speed transmission comprises the steps of setting a prescribed value of a parameter representing a driver's intention of acceleration and corresponding to an accelerator opening which is opened to a certain extent from a fully closed condition, setting a reference engine speed corresponding to the parameter so as to increase as said parameter increases from said prescribed parameter value when said parameter is in a range higher than said prescribed parameter value, setting said reference engine speed so as to increase as said parameter decreases from said prescribed parameter value when said parameter is in a range lower than said prescribed parameter value, and controlling said speed reduction ratio so that the engine speed coincides with said reference engine speed.

Method of controlling speed reduction ratio in a continuously variable speed transmission

Microprocessor controlled automatic power control for adjusting the engine power setting in an engine-transmission power train in which the transmission drive reduction is variable in ratio, by step change or continuously so, such as for use in farm tractors. The microprocessor control monitors the position of this automatically moving lever and the desired transmission output speed to keep the setting adjusted so that engine power is set, within a deadband, to maintain a desired engine speed preferably resulting in minimum fuel consumption or in maintaining constant transmission output speed. Preferably, the microprocessor has a higher priority primary function of also automatically adjusting the transmission drive reduction ratio, for the same purpose but with higher sensitivity. The power control lever is specifically designed to automatically return the power setting to manual control as soon as the operator grabs the handle.

Automatic power control for variable power train

Engine monitor/control microprocessor primarily effective to automatically adjust the engine power setting in a transmission power train in which the transmission drive reduction is variable in ratio, by step change or continuously so, such as for use in farm tractors. The microprocessor adjusts the position of the setting so that engine power set at all levels is produced at the right brake specific fuel consumption for substantially minimum pounds of fuel per horsepower hour, or within a band width thereof if not all that sensitive. Preferably, the microprocessor has a higher priority primary function of also automatically adjusting the transmission drive reduction ratio, for the same purpose but with high sensitivity.

Engine monitor/control microprocessor for continuously variable power train

A microprocessor controlled drive train having an engine-connected variable ratio speed transmission and a load-connected range gear transmission connected by a mid-mounted clutch disposed therebetween has an automatic clutch control mode of operation, with the clutch disengaged and the range transmission in gear to complete a shift, wherein the speeds of the clutch sides are synchronized before engagement by appropriately varying the ratio of the speed transmission, thereby eliminating shift shock. This automatic clutch control mode is preferably employed in combination with operating modes which control both the speed transmission ratio and engine throttle to maintain fuel efficient operation.

Synchronized mid-mounted clutch for variable power train

Transmission monitor/control microprocessor primarily effective to automatically adjust the effective drive reduction ratio of a power train of the type in which such transmission is variable by step change or continuously, such as for use in farm tractors. The microprocessor adjusts the drive reduction ratio so that engine power at all levels is produced at a minimum specific fuel consumption.

Transmission monitor/control microprocessor for continuously variable power train

Simulation of an Electrohydraulic Hitch Control System on an Agricultural Tractor

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