摘要:
In an off-road vehicle having a resistor grid network and a blower system as part of a braking system operable to determine at least one of a resistor failure and a blower failure, the system including a first series of resistors connected in series, a second series of resistors connected in series, a blower cross to at least one of the first series of resistors and the second series of resistors, a sensor proximate at least one of the first series of resistors, the second series of resistors, and the blower, wherein each individual resistor in the first series connected in parallel to an individual resistor in the second series, and wherein when at least one of a current value, blower speed, and voltage value changes, the grid network is disconnected.
摘要:
A locomotive auxiliary power system and control techniques for such a system are provided. In one exemplary embodiment the auxiliary power system includes an auxiliary alternator coupled to the internal combustion engine of the locomotive. The system further includes an auxiliary power bus powered by the auxiliary alternator. A rectifier may be connected between the auxiliary alternator and the auxiliary power bus. A plurality of devices may be electrically powered by the auxiliary power bus. A respective inverter is connected between the auxiliary power bus and each device, wherein the inverter provides a path for diverting electrical power generated during a transient mode by at least one the plurality of devices. In one exemplary embodiment, the auxiliary alternator is made up of a single alternator connected through a single shaft to the internal combustion engine.
摘要:
An oxygen distribution system for a railroad locomotive having an operator cab and operable at high latitudes in ambient air conditions having a low oxygen content level that would be hazardous to locomotive operators, with the oxygen distribution system being configured to generate and supply air having enriched oxygen content levels to the operator cab to support locomotive operators is provided and includes an O2 generation device for generating O2 gas, an O2 processing device for mixing the O2 gas and ambient air and a heating/ventilation device, wherein the O2 generation device is in fluid flow communication with the heating/ventilation device via the O2 processing device, with the O2 processing device receiving O2 gas from the O2 generation device and processing the O2 gas and ambient air to form a processed air having enriched oxygen content levels for transfer to the heating/ventilation device for distribution to the operator cab.
摘要翻译:一种用于铁路机车的氧气分配系统,其具有操作员驾驶室,并且在环境空气条件下在高纬度地可操作,其具有对机车操作者有害的低氧含量水平,氧分配系统被配置为产生和供应具有富氧的空气 提供了用于支持机车操作者的操作员驾驶室的内容水平,并且包括用于产生O 2气体的O 2生成装置,O 2 N 2加工 用于混合O 2气体和环境空气的装置和加热/通风装置,其中O 2生成装置经由加热/通风装置经由 O 2处理装置,其中O 2 2处理装置从O 2 2代装置接收O 2气体,以及 处理O 2气体和环境空气以形成具有富氧含量水平的经处理的空气以转移到他 起动/通风装置分配给操作员驾驶室。
摘要:
A computerized system for use in connection with a hybrid energy off highway vehicle system of a off highway vehicle. The hybrid energy off highway vehicle system includes an off highway vehicle, a primary power source, and an off highway vehicle traction motor propelling the off highway vehicle in response to the primary electric power, and an energy capture system for storing and/or transferring electrical power. An energy management processor carried on the off highway vehicle controls transmission of electrical power among the primary electric power generator, the vehicle propulsion system, an electrical energy capture system, and each of the plurality of dynamic braking resistance grid circuits during motoring, operating and braking the travel of the off highway vehicle.
摘要:
A wayside lubrication apparatus (10) for applying a lubricant (26) in response to the presence of a train (14) on the rail (14). To avoid excessive lubricant on the rail, lubricant may be applied in response to a second train only if a predetermined time period has elapsed between first and second trains. The amount of lubricant applied in response to the second train may be controlled by refilling a lubricant container (68) at a controlled rate. The application of lubricant may be terminated before a number of rearmost load cars (46) of the train pass the lubricant applicator (28) so that the quantity of lubricant remaining on the rail is reduced by the wheels (40) of the cars at the end of the train. This prevents the lubricant from reducing the traction capability of the drive wheels (38) of the next oncoming locomotive (16). Operation of the lubricant dispensing apparatus (22) may be bypassed by an operator-controlled bypass device (60) located on-board the train.
摘要:
A method of dynamically controlling traction of a locomotive (V) having a plurality of axles (A1-A6) on each of which are mounted wheels (W) for moving the locomotive over a set of rails (R). A creep control signal (creep_n) is provided to a controller (TMTC) for each axle to move the locomotive over the rails, the creep control signal being a function of adhesion operation characteristics (tractive effort, torque, creep) for that axle. An advisory signal (ccc_n) combining values representative of the adhesion quality of the two axles is provided to the controller to maximize the tractive effort of the axle if the adhesion quality of the other axle is a maximum for the current rail conditions. This reduces the amount of time for the axle to attain its maximum tractive effort when rail conditions change.
摘要:
A method for equalizing a storage parameter for a vehicle energy storage system having one or more energy storage banks associated therewith includes identifying a quiescent period of operation for the vehicle, and determining whether the value of a defined storage quantity for a first energy storage bank differs from the value of said defined storage quantity for a second energy storage bank by a threshold amount. During the quiescent period of operation, one of said first and second energy storage banks is discharged and the other of the first and second energy storage banks is charged. The one of the first and second energy storage banks corresponds to the bank having the value of the defined storage quantity exceeding the value of the defined storage quantity of the other of said first and second energy storage banks.
摘要:
A system and method for managing electrical power generated by an engine for use in connection with operating a hybrid energy off highway vehicle load control system. A load control circuit determines a current operating condition of the Off Highway Vehicle, and determines a corresponding target operating condition of the Off Highway Vehicle The load control system determines a difference between the current operating condition and a target operating condition to identify transients. The load control system delivers power from the power source to a energy storage for an initial period after a transient condition is identified and then delivers power from the power source to source to the traction motors to propel the Off Highway Vehicle. The load control system also retrieves to power from the energy storage to assist in propelling the Off Highway Vehicle.
摘要:
A method for reducing engine fuel consumption of an electromotive vehicle during braking, the method including steps for providing an engine for the vehicle, generating primary electric power at a primary electric power generator connected to the engine, generating primary electric power at a secondary electric power generator connected to the engine, operating a plurality of electric traction motors each coupled in driving relationship to a respective one of a plurality of driven wheels to propel the vehicle during motoring operations and to generate electricity upon braking operations of the vehicle, electrically connecting a braking switch between the traction motors and the primary electric power generator, applying braking, closing the braking switch, and transmitting power generated by the traction motors to the primary electric power generator to operate as a motor to rotate the engine and drive the secondary electric power generator to power the auxiliary equipment without fueling the engine.
摘要:
A method and apparatus for controlling an inverter circuit to convert dc voltage to variable amplitude and frequency ac voltage use firing pattern tables which are stored and selected in accordance with a required voltage level for the ac voltage. The firing pattern tables are accessed by writable timers which both address the firing pattern tables and define the times between readout of consecutive entires of the firing pattern tables. If requirements of the ac voltage being produced are changed, a new firing pattern table is selected at the end of the currently selected pattern table. Further, as the required frequency of the ac voltage being produced changes during the readout of a selected firing pattern table, the times written into the writable timers are changed accordingly to vary the frequency of the ac signal on the fly. Angle tables corresponding to the pattern tables are stored and accessed by a control processor to determine the times written into the timers. The angle tables are stored in terms of angles between transitions of the pattern tables and one or more angle tables are provided for each pattern table. The amplitude of the ac voltage being produced is determined by pattern table selection and angle table section, if more than one angle table is provided for a given pattern table, and the frequency of the ac voltage being produced is determined by the time signals generated by the processor.