Abstract:
Cab (16) and rollover structures (18) are useful for protecting an operator while operating a vehicle. When an integral cab rollover structure (18) is used it is necessary to provide a mount (26) which will isolate the structure from the frame (12) to reduce vibration and noise and also to provide a solid connection to transfer loads during rollover. The subject mounting arrangement (26) will provide a mounting structure which will isolate the cab rollover structure (18) from the frame (12) in a normal first operating condition to reduce noise and vibration within the cab (16). In a second condition of operation the isolating structure will deform allowing the mounting structure to contact the frame (12) and withstand forces on the cab rollover structure (18). This arrangement (26) of components provides an isolated mount which will not be overstressed during a vehicle rollover.
Abstract:
A valve-closed-orifice (VCO) spray tip (14) having an internal tip seat (18) and one or more fuel spray orifices (20). The thickness of the tip (14) in the wall portion defining the internal tip seat (18) and upstream entrance of each orifice is made less than that of previously known VCO tips. The length to diameter ratio of each orifice (20) is also relatively smaller than that of previously known VCO tips. Advantages of the thinner wall portion include improved fuel injection spray characteristics as well as reduced cost of forming orifices (20) through the tip (14).
Abstract:
A noise attenuating air cleaner assembly (10) for an internal combustion engine or the like operating in a dusty environment. The air cleaner assembly (10) having a silencer assembly (30) arranged concentric inside an air filter cartridge assembly (28) and a noise attenuating end wall assembly (102) closing an end of the air filter cartridge assembly (28) attenuating air cleaner assembly to provide a source of clean air to the engine and to reduce transmitted induction noise.
Abstract:
A composite rod wiper (10) for an end cap (14) of a hydraulic cylinder (12) is disclosed for wiping the cylindrical exterior surface (18) of an extensible and retractable rod (16) extending through the end cap (14). The rod wiper (10) includes a wiper ring (40) of a first, hard and wear resistant elastomeric material. The wiper ring (40) has a generally Vee shaped cross-sectional configuration having a radially inner acute wiper lip (46), an outer leg (48) and an inner leg (50), each leg extending radially and axially inwardly in a diverging relation from each other from the wiper lip (46), and a cavity (52) disposed intermediate the inner and outer legs (48, 50). An energizer ring (42) of a second, softer and more resilient elastomeric material is disposed in the cavity (52) of the wiper ring (40).
Abstract:
Control consoles are normally utilized to provide ready access to the operator of the controls necessary to perfom the various operating functions of the vehicle. Since vehicles, such as construction vehicles, are traversing rough terrain, it is advantageous to stabilize mouvement of the hand of the operator relative to the controls of the vehicle. In this subject arrangement a control console assembly (66) is provided and has a handrest (76) located thereon. The handrest (76) is adapted to receive the hand of the operator such that the heel of the operator's hand remains in intimate contact with a raised portion (78) of the handrest (76). A pair of levers (106, 108) are mounted on the control console assembly (66) adjacent the handrest (76) and operatively actuated by the fingertips of the operator's hand. A rotary knob (86) is oriented on the side of the handrest (76) and operative to be rotated by the thumb of the operator's hand. The various controls for the operating function of the earthworking vehicle is controlled by the fingers of the operator without having to move the heel of his hand from the raised portion (78) of the handrest (76). This allows the operator to have a more finite and smooth control of the various operating functions of the vehicle even though his body is being jostled around due to the earthworking vehicle traversing rough terrain.
Abstract:
A finished toothed sprocket segment (14) is forged in a cavity (76) of a first die (70) by a second die (82) having a protrusion (88) which extends into the cavity (76). The sprocket segment (14) has first and second spaced datum pads (60, 62) formed on a first curved surface (46) of a rim (40) of the sprocket (14) which locates the sprocket segment (14) on a hub (12). The first and second datum pads (60, 62) and first and second apertures (67, 73) are located relative to each other so that distortion of the sprocket segment (14) during final heat treatment does not effect the relative position. As a result the apertures (24, 26) in the hub (12) and sprocket segment (28) are easily aligned during attachment of the sprocket segment (14) to the hub (12). Since the first die (70) requires no draft angles, the critical surfaces on the sprocket segment (14) are forged to final finish, flatness and tolerance.
Abstract:
A control system (140) for an internal combustion engine (100) having a plurality of cylinders (C1-Cn) and a rotatable crankshaft (110). Each cylinder (C1-Cn) has an electronically actuatable intake valve, exhaust valve (120, 125) and fuel injector (130). The control system includes a sensor (155) which monitors the rotation of the crankshaft (110) and responsively produces a crankshaft pulsetrain. A computer (216) produces operator parameter signals. The operator parameter signals including one of a plurality of operating modes of the engine (100). A first microprocessor (226) receives the crankshaft pulsetrain, responsively determines the speed of the engine (100) and produces a signal representative of the determined engine speed. A second microprocessor (222) receives the operator parameter signals and the engine speed signal, responsively determines valve and injection events for each cylinder (C1-Cn) to responsively achieve the one engine operating mode. The second microprocessor (222) produces signals representative of the determined valve and injection events.
Abstract:
Cooling systems are necessary to cool fluid circulated through an internal combustion engine so that engine temperatures can be controlled. The subject dual fan cooling system increases the air flow through a heat exchanger (40) by utilizing a primary fan and a secondary fan (50, 82). The primary fan (50) is located on one side of the heat exchanger (40) and pushes air through the heat exchanger (40) while the secondary fan (82) is located on the opposite side of the heat exchanger (40) and pulls air through the heat exchanger (40). The secondary fan (82) is rotatably mounted in a substantially concentric relation with the primary fan (50) to pull air through the heat exchanger (40) at the area (L) of lowest air flow. The secondary fan (82) also substantially eliminates the recirculation of air back through the heat exchanger (40). A shroud (86) encompasses the secondary fan (82) to substantially block air pushed through the heat exchanger (40) by the primary fan (50) from the secondary fan (82).
Abstract:
Adjacent an axially displaceable engine poppet valve (12) is a fluid pathway (36). Within the fluid pathway (36) is a snubbing valve (14) including a snubber (48) movable between first and second locations within the patwhay (36) and a snubbing passage (54). When the poppet valve (12) is open, the snubber (48) is at its first location and there is fluid in the fluid pathway (36) between the snubber (48) and poppet valve (12). During a first portion of displacement of the poppet valve (12) as it closes, the snubber (48) is displaced to its second location. During the second portion of displacement of the poppet valve (12) as it closes, fluid in the fluid pathway (36) is snubbed through the snubbing passage (54), thereby increasing the pressure in the fluid in the pathway (36), thereby providing a resistive force against movement of the poppet valve (12), thereby slowing the poppet valve (12) to an acceptable impact seating velocity.
Abstract:
An apparatus (102) is adapted to detect the linear extension (position), velocity and acceleration of a hydraulic cylinder (108). The hydraulic cylinder (108) defines a variable lenght coaxial resonant cavity (112). Under the control of a controller (228), an RF transmitting section (114) and an RF receiving section (116) are used to determine the resonant frequency of the cavity. The resonant frequency of the cavity (112) is determined by comparing a received signal with a threshold and detecting slope intercept conditions.