Abstract:
Bucket tip retention means for retaining an excavator bucket tip (70) to an adapter (90) on an excavator bucket including a retention pin (10) extending through co-axial bores (80, 82 and 98) in the bucket tip (70) and the adapter (90), the retention pin (10) having a groove defined in a front face, a positioning shoulder extending from the rear face (26) of the pin (10), and a resilient locking clip element (40) retained in the locking clip groove (30) by a clip retaining pin (50), the locking clip element (40) having a first locking portion (44) and a second locking portion (46) extending from the locking clip groove (30) for engaging the bore (98) in the adapter and urging the positioning shoulder to engage the bore (98) in the adapter (90).
Abstract:
An apparatus for cooling an axle assembly includes a housing (12) defining a chamber (26) having a first fluid contained therein. The apparatus also includes a conduit located within the chamber (26). The apparatus further includes a fluid source in fluid communication with the conduit (42), wherein (1) a second fluid located within the fluid source is advanced through the conduit (42), and (2) the first fluid located within the housing does not intermix with the second fluid being advanced through the conduit (42). A method of cooling a differential assembly is also disclosed.
Abstract:
An apparatus for protecting a track assembly (10) of a tractor includes a first protection member (52) positioned adjacent to the track assembly (10), the first protection member (52) being movable between a first position and a second position. The apparatus also includes a biasing assembly (80) for biasing the first protection member (52) into the first position.
Abstract:
A water cooled, compression ignition engine (1) running on a low cetane fuel comprising a turbocharger (7), an air to air aftercooler (15) and an intake air manifold (3) for supplying compressed combustion air to the engine (1), a heated bypass heat exchanger (19) using heated water from the engine (1) and disposed to bypass the aftercooler (15), and a modulating bypass valve (21) adapted to respond to intake manifold pressure to control the amount of combustin air bypassing the aftercooler (15) and being heated in the bypass heat exchanger (19) to eliminate misfiring and poor combustion during startup and when operating at low loads and promoting better fuel economy, performance and emissions as the load on the engine increases.
Abstract:
A method for determining a remaining life of engine oil in an engine (102) is provided. The method includes the steps of measuring a plurality of engine parameters, determining an estimate of the characteristics of the engine oil as a function of the engine parameters, and trending the estimate and responsively determining the remaining life of the engine oil.
Abstract:
An apparatus and method for detecting and handling liquid separation in a liquid emulsion disposed in a tank (1) by preventing separated liquid from entering a withdrawal conduit (3) disposed in the lower portion of the tank (1) by an apparatus comprising a pump (9) driven by an electric motor (15) and taking its suction from the lower portion of the tank (1) and discharging adjacent the central portion of the tank (1), a float (5), which sinks in the emulsion and floats on the high density liquid is cooperatively associated with a relay (17) to start the pump motor (15) when accumulated high density liquid raises the float (5) a predetermined amount, a time delay (21) runs the pump (9) a predetermined length of time sufficient to reemulsify the accumulated high density and preventing it from entering the withdrawal conduit (3).
Abstract:
Apparatus and method for controlling at least one hydraulic cylinder (18) by the hydraulic fluid discharged by a hydraulic pump (12) through a control valve (20). The hydraulic control system (10) includes sensors to sense the conditions of the system and produce responsive signals. In the first stage, a control means (54) determines an initial pump displacement output value and an initial spool displacement output value as a function of the system condition signals according to a plurality of feedback linearization control laws. In the second stage (56), a second control means produces an output signal for the hydraulic pump (12) and an output signal for the control valve (20) as a function of the initial pump displacement output value, the initial spool displacement value and an input command signal (44) according to linear control laws.
Abstract:
A method for treating exhaust gas of an engine for the removal of NOx by increased efficiency of NOx reducing fluid mixing with the exhaust gas and cooling of the resultant treated exhaust gas stream prior to contact with the deNOx catalyst (20).
Abstract:
A braking control for an engine permits the timing and duration of exhaust valve opening to be accurately determined independent of engine events so that braking power can be precisely controlled.
Abstract:
A deep hardening boron steel has a composition comprising, by weight, about 0.23 % to 0.37 % carbon, about 0.40 % to 1.20 % manganese, about 0.50 % to 2.00 % silicon, about 0.25 % to 2.00 % chromium, about 0.20 % to 0.80 % molybdenum, from 0.05 % to 0.25 % vanadium, from 0.03 % to 0.15 % titanium, from 0.015 % to 0.050 % aluminum, from 0.0008 % to 0.009 % boron, and 0.005 % to 0.013 % nitrogen. Also, the composition preferably contains less than about 0.025 % each of phosphorus and sulfur. After quenching and tempering, articles made from this material are substantially free of aluminum nitrides, have a fine martensitic grain structure, have a distribution of nanometer size background nitride, carbonitride, and carbide precipitates, and a combination of high hardness and fracture toughness. The deep hardening steel article embodying the present invention is particularly useful for ground engaging tools that are subject to breakage and wear, often at high temperature.