A lubricant reservoir system includes a lubricant reservoir having an interior wall and an inlet for receiving lubricant from a supply. A follower device in the reservoir contacts the interior wall of the reservoir in a sliding and sealing manner, and the follower device is movable up and down in the reservoir from a first position to a second position in response to a changing lubricant level. A valve is in fluid communication with the inlet and is configured to selectively prevent a flow of the lubricant through the inlet. A connector operatively connects the follower device to the valve unit such that the flow of the lubricant through the inlet is prevented when the follower device is in the second position. The connector is configured such that the valve is positionable independently of the reservoir.

A lubricant reservoir system includes a lubricant reservoir having an interior wall and an inlet for receiving lubricant from a supply. A follower device in the reservoir contacts the interior wall of the reservoir in a sliding and sealing manner, and the follower device is movable up and down in the reservoir from a first position to a second position in response to a changing lubricant level. A valve is in fluid communication with the inlet and is configured to selectively prevent a flow of the lubricant through the inlet. A connector operatively connects the follower device to the valve unit such that the flow of the lubricant through the inlet is prevented when the follower device is in the second position. The connector is configured such that the valve is positionable independently of the reservoir.

A lubrication system and method for an engine arc provided. In some embodiments, the lubrication method comprises driving a lube pump with a gearbox in a power drive housing, the gearbox including an expander shaft of an expander of a waste heat recovery system; suctioning lubrication fluid, with the lube pump, from a lube sump in the power drive housing; lubricating, with the lubrication fluid, an expander shall bearing supporting the expander; and after lubricating the expander shall bearing, transferring the lubrication fluid to the lube sump waste heat recovery power drive and lubrication system therefor.

Systems are provided for an oil system including a filter with a large surface area. In one example, a system may include an oil filter with a prismatic shape. This shape may include a filter surface area greater than an inlet area of an oil port and the filter surface area may also be located a distance away from the oil port.

Techniques for delivering lubricant to a packing assembly of a fluid end of a reciprocating pump include delivering lubricant to a stuffing box that is housing a packing assembly or to a manifold disposed in or around the stuffing box. The lubricant configured to decrease friction between an interior surface of the packing assembly and a reciprocating component moving along the interior surface. Prior to delivering the lubricant to the interior surface of the packing assembly, the lubricant is diverted to multiple radial flow paths circumferentially spaced around a bore in which the packing assembly is disposed. The multiple radial flow paths lead to the interior surface of the packing assembly and the lubricant flowing through the multiple radial flow paths is metered at different flow rates based on a friction gradient across the interior surface of the packing assembly.

Techniques for delivering lubricant to a packing assembly of a fluid end of a reciprocating pump include delivering lubricant to a stuffing box that is housing a packing assembly or to a manifold disposed in or around the stuffing box. The lubricant configured to decrease friction between an interior surface of the packing assembly and a reciprocating component moving along the interior surface. Prior to delivering the lubricant to the interior surface of the packing assembly, the lubricant is diverted to multiple radial flow paths circumferentially spaced around a bore in which the packing assembly is disposed. The multiple radial flow paths lead to the interior surface of the packing assembly and the lubricant flowing through the multiple radial flow paths is metered at different flow rates based on a friction gradient across the interior surface of the packing assembly.

A lubrication system and method for an engine are provided. In some embodiments, the lubrication method comprises driving a lube pump with a gearbox in a power drive housing, the gearbox including an expander shaft of an expander of a waste heat recovery system; suctioning lubrication fluid, with the lube pump, from a lube sump in the power drive housing; lubricating, with the lubrication fluid, an expander shaft bearing supporting the expander; and after lubricating the expander shaft bearing, transferring the lubrication fluid to the lube sump.waste heat recovery power drive and lubrication system therefor.

A lubrication system and method for an engine are provided. In some embodiments, the lubrication method comprises driving a lube pump with a gearbox in a power drive housing, the gearbox including an expander shaft of an expander of a waste heat recovery system; suctioning lubrication fluid, with the lube pump, from a lube sump in the power drive housing; lubricating, with the lubrication fluid, an expander shaft bearing supporting the expander; and after lubricating the expander shaft bearing, transferring the lubrication fluid to the lube sump.waste heat recovery power drive and lubrication system therefor

The invention relates to a method of dosing lubricating grease with a lubricant dispenser (1), comprising a lubricant cartridge (3) filled with lubricating grease (2) and holding a plunger (4) for expelling the lubricating grease (2), a spindle (6) driven by a direct-current drive motor (5) for moving the plunger (4), a power supply (7), a controller (8) for operating the motor (5) with a microcontroller (9), and a device (10) for interrupting the motor current flowing through the motor (5). The motor (5) is started up by the controller (8) in adjustable time intervals and a dose of dispensed agent is expressed from the cartridge (3) through a plunger motion with a predetermined plunger stroke. The motor current and the motor voltage are measured during motor operation, and the motor runtime, and the plunger stroke is calculated with the current and voltage measured values and at least one motor characteristic. The motor current is interrupted when the motor operating time reaches the calculated motor runtime.

Methods and systems for a mechanically driven pump are provided. The pump is for lubrication and comprises: a cam lobe or an eccentric mounted on and driven by a shaft; a piston being in contact with the cam lobe or the eccentric; a spring acting on the piston; an inlet check valve positioned in an inlet port; and an outlet check valve positioned in an outlet port, where the inlet check valve and the outlet check valve do not comprise preload springs and are installed vertically in a normally closed position due to a force of gravity acting on internal balls of the check valves. Orifices fluidly coupled to the inlet check valve and the outlet check valve are position outside the piston stroke to prevent the piston from acting as a guillotine valve, which may increase volumetric efficiency of the mechanically driven pump.