Ross Renner - Black Creek WI Alan Smith - Fremont WI Rob Williams - Troy OH
Assignee:
Illinois Tool Works Inc. - Glenview IL
International Classification:
B23K 910
US Classification:
219133, 21913021
Abstract:
A method and apparatus for providing a welding output and an auxiliary output from a generator having a field winding, an auxiliary output winding and a welding output winding is disclosed. One or both of a welding output and an auxiliary output are detected, and feedback signals indicative of the presence or absence of one or both of a welding output and an auxiliary output are provided. A controller, preferably an electronic field controller includes an auxiliary output regulator enabled or disabled by the output detector feedback signal and a welding regulator enabled or disabled by the output detector feedback, such that one and only one of the auxiliary output regulator and welding regulator is enabled. The auxiliary output regulator is connected to an auxiliary output feedback circuit, thereby providing closed loop control, preferably with a CV output. A maximum auxiliary power output is available in the absence of the welding output, and less then the maximum auxiliary power output is available in the presence of the welding output.
A method and apparatus for providing welding power from an engine/generator driven welding power supply includes an engine and a generator. A welding power supply is connected to the generator output, and provides welding power. A controller controls the apparatus, and receives an RPM input signal indicative of the engine RPM, and a user selected magnitude input. The controller includes an output reduction circuit that reduces the magnitude of the welding power by a variable amount in the event the engine is likely to stall, so as to reduce the likelihood of a stall, but maintain sufficient power for a welding arc. The magnitude of the welding power is reduced by an amount responsive to the engine speed in the event that the engine RPM is less than an RPM threshold, and/or by an amount responsive to the user selectable setting in the event that the user selectable setting is greater than a threshold. The power reduction may be responsive and/or proportional to the difference between the actual value and the threshold, and continuous or done in steps. The output reduction circuit controls the generator field current or the load current command to reduce the welding power.
A method and apparatus for providing welding power from an engine/generator driven welding power supply includes an engine and a generator. A welding power supply is connected to the generator output, and provides welding power. A controller controls the apparatus, and receives an RPM input signal indicative of the engine RPM, and a user selected magnitude input. The controller includes an output reduction circuit that reduces the magnitude of the welding power by a variable amount in the event the engine is likely to stall, so as to reduce the likelihood of a stall, but maintain sufficient power for a welding arc. The magnitude of the welding power is reduced by an amount responsive to the engine speed in the event that the engine RPM is less than an RPM threshold, and/or by an amount responsive to the user selectable setting in the event that the user selectable setting is greater than a threshold. The power reduction may be responsive and/or proportional to the difference between the actual value and the threshold, and continuous or done in steps. The output reduction circuit controls the generator field current or the load current command to reduce the welding power.
Methods and systems for cutting off the supply of fuel to an engine in response to engine turn-off. A fuel cutoff solenoid or functionally equivalent device is connected to a source of electrical power in response to detection of conditions representing engine turn-off. One method for cutting off the supply of fuel to the engine comprises the following steps: detecting whether ignition pulses are present; and then activating a device for cutting off the supply of fuel to the engine in response to detecting the cessation of ignition pulses. The fuel cutoff device is activated by connecting it to either a battery or an output of a generator being driven by the engine. In the latter case, the rotor is grounded and a bipolar transistor is bypassed in response to detection of conditions representing engine turn-off.
Ross Renner - Black Creek WI, US Benjamin G. Peotter - Kaukauna WI, US
Assignee:
Illinois Tool Works Inc. - Glenview IL
International Classification:
G01M 15/00
US Classification:
7311452
Abstract:
A fuel usage monitoring system, in certain aspects, may be configured to determine the fuel usage rate of a work vehicle service pack engine using control signals relating to operating parameters of the service pack engine and associated equipment. In certain embodiments, the control signals may relate to operating parameters of the engine, a fuel injection pump associated with the engine, a governor associated with the fuel injection pump, a fuel reservoir associated with the engine, and other components associated with the engine. In particular, the control signals may relate a position of a control rack of the fuel injection pump. The control signals may be correlated with fuel usage rates prior to operation of the fuel usage monitoring system. In addition, the correlations may vary as certain parameters of the engine, such as operating speed, vary. The correlations may be implemented as algorithms within software of the fuel usage monitoring system.
Benjamin G. Peotter - Kaukauna WI, US Ross Renner - Black Creek WI, US
Assignee:
Illinois Tool Works Inc. - Glenview IL
International Classification:
F02B 63/00
US Classification:
123350, 123 2, 290 1 A, 219133
Abstract:
A power management system, in certain aspects, may utilize direct load sensing feedback from the prime mover (e. g. , engine), thereby reducing the possibility of overloading the prime mover. The use of direct load sense feedback from the prime mover can then be used with additional feedback, such as prime mover RPM feedback and individual output load sensing feedback, to directly control the output loads and set the primary power sources rpm set-point to better manage the power available and reduce the possibility of overloading the primary power source.
Compressor Control For Determining Maximum Pressure, Minimum Pressure, Engine Speed, And Compressor Loading
A load control system, in certain aspects, may be configured to decrease the amount of noise pollution of a prime mover (e. g. , engine) of a service pack in that it may not require the prime mover to operate at higher discrete operating speeds to deliver small amounts of air from the air compressor. The load control system may also only increase the speed of the prime mover to a minimum discrete speed required, keeping noise at a minimum. The load control system may also maximize fuel efficiency by not operating the prime mover at the highest discrete speed at all times. More specifically, the lower operating speeds may lead to less fuel consumption.
The present embodiments provide a system having a motor, a compressor having a compression device configured to increase a pressure of a gas, a clutch configured to selectively transfer torque from the motor to the compressor to drive the compression device, and a controller configured to disengage the clutch if the pressure of the gas in the compressor meets or exceeds a first threshold pressure.