An outboard motor with improved maintainability and attachable to a hull of a marine vessel includes an internal combustion engine and a cowl to cover the internal combustion engine. The internal combustion engine includes an oil filler to feed oil thereto and an oil filter to filter the oil. In a case that a direction perpendicular or substantially perpendicular to a bottom of the hull is a vertical direction, the cowl is separable into a top cowl to cover an upper portion of the internal combustion engine and a side cowl to cover a side portion of the internal combustion engine. At least a portion of the oil filler or at least a portion of the oil filter is located above a separating line which is a boundary between the top cowl and the side cowl.

A vehicular internal combustion engine is equipped with a supercharger, a drain pipe for draining lubricating oil in the supercharger, a cylinder block including a first oil passage, and a PCV separator including a second oil passage connected to an outlet of the drain pipe and an inlet of the first oil passage.

A vehicular internal combustion engine is equipped with a supercharger, a drain pipe for draining lubricating oil in the supercharger, a cylinder block including a first oil passage, and a PCV separator including a second oil passage connected to an outlet of the drain pipe and an inlet of the first oil passage.

A controller includes: a control unit configured to detect, based on information from a sensor mounted on a vehicle, a first event indicating that engine oil is discharged from an engine of the vehicle, or a second event indicating that the engine is replenished with engine oil; and a storage unit configured to store the result of detection by the control unit as a history of oil change.

A controller includes: a control unit configured to detect, based on information from a sensor mounted on a vehicle, a first event indicating that engine oil is discharged from an engine of the vehicle, or a second event indicating that the engine is replenished with engine oil; and a storage unit configured to store the result of detection by the control unit as a history of oil change.

A device for determining a filling level of a container is provided, having a damping cup, a measuring section extending vertically inside the damping cup, and having an ultrasound converter arranged at its lower end region, and at least one antechamber. A calming structure is arranged in at least a part of at least one antechamber, to achieve as much degassing of the liquid as possible. The part of the antechamber having the calming structure is designed to be open towards the top over a large area and is connected, via a venting channel, with a vent in the upper region of the device.

A device for determining a filling level of a container is provided, having a damping cup, a measuring section extending vertically inside the damping cup, and having an ultrasound converter arranged at its lower end region, and at least one antechamber. A calming structure is arranged in at least a part of at least one antechamber, to achieve as much degassing of the liquid as possible. The part of the antechamber having the calming structure is designed to be open towards the top over a large area and is connected, via a venting channel, with a vent in the upper region of the device.

Systems and methods are provided for remotely monitoring liquid lubricant levels for pump equipment. A system includes a reservoir to store lubricant and a lubrication gland to expose a shaft seal of the pump equipment to the lubricant. A feed line and a return line circulate the lubricant between the reservoir and the lubrication gland. A level sensor is configured to measure a fluid level in the reservoir. The level sensor uses a communication interface to transmit fluid level data a monitoring device mounted to the pump equipment. The monitoring device is configured to compare the fluid level data against stored alert thresholds and send, to a provider network, an alert signal when the fluid level data is below an alert threshold. If the fluid level data is not below an alert threshold, the monitoring device stores the fluid level data for periodic reporting.

Systems and methods are provided for remotely monitoring liquid lubricant levels for pump equipment. A system includes a reservoir to store lubricant and a lubrication gland to expose a shaft seal of the pump equipment to the lubricant. A feed line and a return line circulate the lubricant between the reservoir and the lubrication gland. A level sensor is configured to measure a fluid level in the reservoir. The level sensor uses a communication interface to transmit fluid level data a monitoring device mounted to the pump equipment. The monitoring device is configured to compare the fluid level data against stored alert thresholds and send, to a provider network, an alert signal when the fluid level data is below an alert threshold. If the fluid level data is not below an alert threshold, the monitoring device stores the fluid level data for periodic reporting.

A tidal current energy generating device includes an outer frame (1), at least two inner frames (2), at least two mounting shafts (4), a driving unit (6), at least four horizontal-axis hydraulic generators (3), and at least six bearings (5). The at least two inner frames (2) are separably disposed in the outer frame (1), respectively. The at least two mounting shafts (4) are rotatablely disposed in the two inner frames (2), respectively, and the axial direction of the at least two mounting shafts (4) is perpendicular to the horizontal plane. The driving unit (6) is connected with the at least two mounting shafts (4) to drive the mounting shafts (4) to rotate. Every two horizontal-axis hydraulic generators (3) are fixed at one mounting shaft (4) and are disposed in the same inner frame (2). The at least four horizontal-axis hydraulic generators (3) change directions with the rotating of the mounting shaft (4). Every three bearings (3) are sleeved on one mounting shaft (4), and the three bearings (5) on one mounting shaft (4) are disposed on the two sides and the center of the two horizontal-axis hydraulic generators (3), respectively. The tidal current energy generating device can be maintained or replaced conveniently and can extend deeply in the sea.