Abstract: This disclosure deals with an aneroid for an internal combustion, compression-ignition engine including a turbocharger. The engine further includes a fuel supply system including a fuel supply rail connected to carry fuel to a plurality of fuel injectors and a regulator for regulating the pressure of the fuel in the supply rail. The quantity of fuel injected in each operating cycle of the engine is a function of the fuel pressure in the supply rail. The aneroid is connected in the rail between the regulator and the injectors, and it includes valve means operative to gradually increase the fuel pressure in the rail downstream of the aneroid, in response to a rise in manifold air pressure. The aneroid further includes means responsive to the downstream fuel pressure for adjusting the valve means to reduce the fuel pressure in response to a rise in the downstream fuel pressure.

Abstract: The disclosure illustrates a fixture permitting the adjustment of a stop which limits the upward travel of a unit type fuel injector plunger. The fixture comprises parallel rails having cross bars for clamping the injector to be adjusted with a given preload. An upper cross bar receives a displaceable rod adapted to be received in a socket in the injector for depressing the plunger. An arm having a given weight at its free end is pivotally mounted to the upper cross arm. The arm is pivoted downward to depress the plunger to its bottom-most position. A dial gauge indicates linear displacement of the rod and the plunger to a desired upper limit of travel where the stop is positioned. The predetermined weight at the end of the arm permits repeatable checking of the adjustment.

Abstract: The disclosure illustrates a method and apparatus for precision balancing a rotatable element such as the turbine shaft assembly of a turbocharger. The turbine-shaft assembly is placed in a machine that detects the position and degree of unbalance. The material contributing to the unbalance is then removed from the wheel using electrochemical machining in which material is removed from the turbine through anodic dissolution of the turbine wheel material by passage of a current through a conductive work piece and electrolyte to the wheel. A means is provided to indicate the time integrated current flow of the electrochemical machining process. The time integrated current flow is related to unbalance units so that the electrochemical machining is terminated when the desired amount of mass is removed to achieve balance by reaching the determined time integrated current flow.

Abstract: The disclosure illustrates an exhaust gas turbine and compressor system for use with a pneumatic conveyor where the exhaust gas is supplied by an internal combustion engine. The engine utilizes a variable geometry turbine device for changing the torque characteristics of the turbine so as to vary the mass flow of air from the compressor driven by the turbine. As a result, the compressor output will be sufficient to supply air to the engine or to the pneumatic conveyor system while the engine is naturally aspirated. A diverter valve is provided for selectively directing air from the outlet of the compressor either to the air intake of the engine or the pneumatic conveyor.

Abstract: A valve construction is provided for use in controlling fluid flow to a plurality of intake passageways. The valve construction is particularly suitable for use in an internal combustion engine to control the flow of exhaust gases to a turbocharger, the latter having a plurality of intake passageways communicating with the turbine section thereof. The valve construction includes a housing having an inlet for the engine exhaust gases and an outlet communicating with the intake passageways. Disposed within the housing and intermediate the inlet and outlet thereof is an adjustable valve piece which is adapted to be moved to selected positions of adjustment relative to said housing. When the valve piece is in a first selected position, exhaust gases flow through the housing to a first predetermined number of intake passageways. When the valve piece is adjusted to a second selected position, exhaust gases flow through the housing to a second predetermined number of intake passageways.

Abstract: A hydraulic tappet or lash adjuster of simplified design is disclosed for use in the valve train of an internal combustion engine equipped with dual ramp cams. In one embodiment, the disclosed tappet is designed to respond to the presence or absence of control pressure supplied through a single supply port to cause variation in the timed relationship of valve opening and piston movement whereby the internal combustion engine may be operated in a power mode or a braking mode. In another embodiment, a pressure relief outlet is provided in the tappet for cooperation with a pressure relief port to insure collapse of the tappet thereby to prevent the valve from being opened beyond a pre-determined fully open position.

Abstract: This disclosure deals with a reciprocating piston for an internal combustion engine, particularly for a diesel engine. The piston is made of a relatively high strength metal such as iron, and no more material is used than is necessary to withstand the thermal and mechanical loads encountered in use. A circular piston dome is supported by a support part which extends between the dome and a pair of piston pin bosses. The bosses also support arcuate side thrust pads. A ring band is connected to the outer periphery of the dome by a connecting part which is relatively thin and flexible. The dome, the ring band and the support part are generally symmetrical about the axis of the piston. The support part is annular in cross section and may be conical, cylindrical, or partly conical and partly cylindrical.

Abstract: The disclosure illustrates a fuel control valve for a fuel system of a compression ignition engine which utilizes unit fuel injectors operating on the principle that the fuel pressure applied to the injectors determines the quantity of fuel injected into the engine cylinders. The fuel control valve is connected in the supply line for half of the injectors of the engine. The valve has a plunger which blocks off flow to these injectors whenever the fuel system pressure is below a predetermined level. When the pressure exceeds that level, the plunger displaces to a position where it permits flow to the injectors and offers a minimum restriction to flow. The pressure level is set at a level which reflects engine operation above idle but below normal engine operating conditions. The net effect is to substantially reduce the generation of white smoke during engine startup and while idling for extended periods of time while not affecting normal engine operating conditions.

Abstract: A compression braking system for an internal combustion engine having at least one working piston including a master piston operated by a fuel injector actuating mechanism and a slave piston fluidically connected with the master piston to open an engine exhaust valve wherein a fluid pressure control valve is provided to operate an exhaust valve opening delay means for delaying the opening of the exhaust valve to prevent the build up of excessive pressure in the fluid circuit between the master and slave pistons. The pressure relief valve is spring biased to sense fluid pressure above a predetermined level within the fluid circuit and to respond by venting fluid from the circuit to prevent thereby the exhaust valve from being opened against a variable closing bias exceeding a predetermined limit. The pressure relief valve has, in one embodiment, adjacent inlet and outlet ports while in a second embodiment the inlet and outlet ports are separated.

Abstract: This disclosure deals with a fuel injector for an internal combustion engine. The injector includes an injector body having a fuel metering chamber formed therein which receives fuel from a fuel supply. A plunger is movable into the chamber in an injection stroke to force fuel from the chamber and out of the injector through spray holes. A valve member is mounted in the path of fuel flow from the chamber to the spray holes, the valve member being movable between first and second positions. In the first position, the valve member seals the path and prevents air in the combustion chamber from mixing with the fuel being metered into the metering chamber, and in the second position the valve member closes the spray holes to terminate injection. During an injection stroke, the plunger moves the valve member from the first position toward the second position, and fuel injection takes place while the valve member is intermediate the first and second positions.

Abstract: This disclosure deals with a system for indicating to the driver of a vehicle a figure which represents the operating efficiency of the vehicle and which is derived from the fuel consumed and the distance traveled by the vehicle. The system measures the speed of the vehicle and a characteristic of the fuel supply system of the engine which is indicative of the fuel consumption. These two factors are combined in a dividing circuit which produces a signal that is fed to an indicator for displaying the figure to the operator of the vehicle. The vehicle engine has a fuel supply system including injectors and a fuel pressure regulating apparatus. The total fuel flowing to the injectors is divided into a burned flow portion and a return flow portion, and the burned flow portion is a relatively fixed ratio of the total flow. The characteristic of the supply system which is sensed is the total flow, and because of the fixed ratio, it is indicative of the fuel consumption rate.

Abstract: An exhaust braking valve is provided for use on an internal combustion engine having an exhaust manifold and a turbocharger associated therewith. The braking valve comprises a hollow section having an inlet communicating with the discharge side of the exhaust manifold and an outlet communicating with the intake for the turbine section of the turbocharger. Disposed within the hollow section is an adjustable member having a flow passage formed therein which, when the member is in a selected first position of adjustment, interconnects the inlet and outlet and effects unrestricted gas flow through the valve. When the adjustable member is in a selected second position of adjustment, a segment thereof assumes a gas flow blocking relation with respect to the inlet and outlet of the hollow section.

Abstract: This disclosure deals with a system for indicating to the driver of a vehicle the operating efficiency of a vehicle. The system senses the speed of the vehicle and a characteristic of the fuel supply system which is indicative of the fuel consumption. These two factors are combined in a dividing circuit which produces a signal indicating the fuel consumption rate which is a measure of the operating efficiency. This signal is fed to an indicator which displays the fuel consumption rate to the operator of the vehicle.

Abstract: This disclosure deals with a fuel supply system for an internal combustion engine, the supply system including injectors for injecting fuel into the combustion chambers of the engine, and hydraulic means for adjusting the timing of injection. The hydraulic timing adjustment is included in each of the injectors of the system. The hydraulic timing adjustment responds to parameters of the engine, such as load and/or speed, for varying or holding constant the time of initiation of injection, and the adjustment is quickly responsive to changes in the parameters.

Abstract: A fluid drive coupling is provided which includes a platelike first member rotatably mounted within a chamber formed in a second member, the latter also being rotatably mounted. Both members are rotatable about a common axis and one of the members is driven by an external force. The chamber is formed into an annular fluid drive section having surfaces thereof in close proximity to substantial outer opposite surface portions of the first member whereby rotation of one member imparts rotation to the other member through a fluid disposed within the chamber drive section. The chamber is also formed into an inner section, a portion of which, disposed to one side of the first member, is separated into first and second fluid reservoirs interconnected to one another only through a port. A thermal responsive valve is mounted on the second member and is rotatable therewith. The valve effects opening and closing of the port in response to predetermined temperatures.

Abstract: An improved isolated oil pan assembly is provided for use on an internal combustion engine, such as a diesel engine, thereby eliminating a serious problem associated with prior engines of this type; namely, a source of undesirable noise. The improved pan assembly includes a pan which is secured to the underside of the engine block by a plurality of fastening means spaced from one another and disposed inwardly from the periphery of the pan. Each fastening means is positioned within an elongated sleeve-like pocket which is recessed from the underside of the pan and extends through and protrudes from an opening formed in the upper end of the pocket. The protruding portion of the fastening means is secured to a rigid stationary member disposed within the interior of the engine block. Each fastening means is isolated from the corresponding oil pan pocket by an isolator formed of resilient, vibration isolating, oil impervious material.

Abstract: A turbocharged diesel engine fuel system has its output fuel pressure varied upon acceleration as a direct function of the engine's manifold air pressure. The improvement of an orifice and chamber of predetermined size produces a delay in the transmission of the manifold air pressure signal to the fuel system. This, in turn, causes a delay in the increase of fuel rate to the engine thereby minimizing acceleration smoke without hurting engine power during steady state operation.

Abstract: A device used to recycle used engine lubricating oil for addition to the fuel oil burned by a compression ignition engine includes a pump for pumping used lubricating oil from the engine sump. A filter removes contaminates from the oil before it is pumped to a chamber where it is mixed with fuel oil supplied by another pump and fed to the engine fuel tank. Pressure reducing orifices between the pumps and the mixing chamber insure that both pumps will operate to pump liquid regardless of the operation of the other pump.

Abstract: The disclosure illustrates an anti rotation seal assembly for use with a shaft mounted impeller or other rotatable element having a wear face. A nose portion of a carbon sealing washer is urged against the wear face by a spring contained within a non rotatable seal housing. The sealing washer has surfaces on its outer periphery which engage anti rotation elements supported by the seal housing to prevent rotation of the washer while permitting axial movement. In another form the anti rotation elements may be molded into the washer.

Abstract: The disclosure illustrates an oil seal assembly for a keyway which receives a pin for an interconnection between an accessory drive pulley and a shaft extending from a diesel engine accessory drive gear box. The oil seal consists of an L-shaped elastomeric seal with one leg of the L extending into the keyway and the other leg providing a shoulder which abuts the shaft adjacent the keyway end. A nut threaded onto the end of the shaft holds a washer against the L-shaped seal thus compressing it. So compressed, the seal expands against the walls of the keyway to form an effective seal against the flow of oil therethrough. Preferably, the seal is formed from material which swells exceedingly when immersed in petroleum products. As a result, any leakage causes the seal to expand and stop further oil flow.