A lubricating oil pump device includes a pump main body and a lubricating oil cartridge, wherein the pump main body comprises: a suction part; a discharge part; a piston; a relief valve; a pressure detection sensor; a control part; a first pipeline; an inlet-side check valve, between the suction part and the discharge part, for preventing lubricating oil, having moved to the first pipeline, from flowing back to the lubricating oil cartridge; an outlet-side check valve, between the suction part and the discharge part, for preventing the lubricating oil, having been supplied to a lubricating oil supply pipe, from flowing back to the first pipeline; a second pipeline; a third pipeline; and a fourth pipeline, the pressure detection sensor detects pressure inside the pump main body through the fourth pipeline.

A lubricating oil pump device includes a pump main body and a lubricating oil cartridge, wherein the pump main body comprises: a suction part; a discharge part; a piston; a relief valve; a pressure detection sensor; a control part; a first pipeline; an inlet-side check valve, between the suction part and the discharge part, for preventing lubricating oil, having moved to the first pipeline, from flowing back to the lubricating oil cartridge; an outlet-side check valve, between the suction part and the discharge part, for preventing the lubricating oil, having been supplied to a lubricating oil supply pipe, from flowing back to the first pipeline; a second pipeline; a third pipeline; and a fourth pipeline, the pressure detection sensor detects pressure inside the pump main body through the fourth pipeline.

Disclosed is a lubricant supply device, including at least a first housing section forming a reservoir for a lubricant, a second housing section including a feed pump for feeding the lubricant from the reservoir to a lubricant outlet and a motor driving at least the feed pump,
the motor being arranged in the first housing section forming the reservoir.

In an electric oil pump device including a drive power source and a gear device through which a vehicle drive force of the drive power source is transmitted, the electric oil pump device delivering a lubricant oil to the gear device, and generating a hydraulic pressure for controlling the gear device, a pump portion for delivering the lubricant oil, a motor portion for operating the pump portion, and a driver portion for controlling an operation of the motor portion are included. The pump portion, motor portion and driver portion are formed integrally with each other, or the driver portion is disposed adjacent to the motor portion. The pump portion and a part or an entirety of the motor portion are disposed within a space defined by an oil pan and a casing accommodating the gear device, and the driver portion is disposed outside the casing and the oil pan.

A pump housing includes an integral vent flow path extending between a low-pressure region and the reservoir. The vent path provides fluid communication between the downstream side of a throat seal dividing the low-pressure region from a high-pressure region and the reservoir. Lubricant flows through the vent path from the reservoir to the low-pressure region to provide lubrication to the throat seal.

A lubrication system comprising a motor, a positive displacement pump driven by the motor, a lubricant container in fluid communication with the positive displacement pump and at least one lubricant outlet in fluid communication with the lubricant container. The positive displacement pump is arranged to carry out at least one discharge stroke to dispense lubricant from the at least one lubricant outlet when the lubrication system is in use. The lubrication system also comprises a control unit that is arranged to determine an amount of lubricant that is dispensed from the lubricant container via the at least one lubricant outlet when the lubrication system is in use. The control unit is arranged to monitor current supplied to the motor to obtain a motor current signal, and to determine a number of the discharge strokes from the motor current signal.

A lubrication system comprising a motor, a positive displacement pump driven by the motor, a lubricant container in fluid communication with the positive displacement pump and at least one lubricant outlet in fluid communication with the lubricant container. The positive displacement pump is arranged to carry out at least one discharge stroke to dispense lubricant from the at least one lubricant outlet when the lubrication system is in use. The lubrication system also comprises a control unit that is arranged to determine an amount of lubricant that is dispensed from the lubricant container via the at least one lubricant outlet when the lubrication system is in use. The control unit is arranged to monitor current supplied to the motor to obtain a motor current signal, and to determine a number of the discharge strokes from the motor current signal.

A lubrication system for supplying a lubricant to at least one lubrication point includes at least one lubricant line and at least one lubricant system component that is connected to the lubricant line. The lubrication system component includes at least one movable element and/or the lubricant line includes at least one movable portion. The system also includes at least one energy-generating element, such as a piezo element or a magnet and coil, configured to interact with the at least one movable element and generate energy from a movement of the at least one moveable element.

A lubrication system for supplying a lubricant to at least one lubrication point includes at least one lubricant line and at least one lubricant system component that is connected to the lubricant line. The lubrication system component includes at least one movable element and/or the lubricant line includes at least one movable portion. The system also includes at least one energy-generating element, such as a piezo element or a magnet and coil, configured to interact with the at least one movable element and generate energy from a movement of the at least one moveable element.

An electric-powered lubricator in one aspect of the present disclosure includes a first manual switch, an electric motor, a drive circuit, a pump, a memory device, and a control circuit. The memory device stores one or more reference values. Each of the one or more reference values corresponds to a mass of lubricant to be dispensed from a dispensing port of the pump per reciprocation of a plunger of the pump. The control circuit in a calibration mode calculates a new reference value based on (i) an input value and (ii) a count of reciprocation of the plunger. The input value corresponds to a measured total mass of the lubricant dispensed from the dispensing port.