An oil sump is provided, including a bottom wall and a lateral outer wall, which in the assembled condition of the oil sump extends upwards from the bottom wall, as seen in the direction of gravity, and an oil storage region, which is arranged in an interior of the oil sump and, when the oil sump is in operation, is filled with oil up to a storage level, wherein the oil sump is better able to withstand heat and flame. The oil sump includes an oil cooling region, which is adjacent to the lateral outer wall and is filled with oil to a cool level, and a decoupling device for decoupling the cool level of the oil in the oil cooling region from the storage level of the oil in the oil storage region in a cool condition of the oil sump.

A power transmission device includes: a case including a first oil reservoir configured to store oil, a second oil reservoir configured to store the oil, and a partition wall configured to separate the first oil reservoir and the second oil reservoir from each other; the oil enclosed in the case; a rotating member configured to contact the oil in the first oil reservoir; and an opening and closing member located in the partition wall and configured to supply the oil from the second oil reservoir to the first oil reservoir. The oil level in the first oil reservoir when the opening and closing member is open is higher than the oil level in the first oil reservoir when the opening and closing member is closed, and is high enough for at least a part of the rotating member to be dipped in the oil.

An engine includes a crankcase in which a crank chamber that houses a crankshaft is formed, a cylinder block that is attached to the crankcase, and a cylinder that is formed with a sliding surface with respect to a piston. The crankcase includes a partition wall that forms the crank chamber. A lower end of the cylinder protrudes into the crank chamber from a lower end of the cylinder block, and a communicating hole that connects inside and outside of the cylinder is formed on a side surface of the cylinder as viewed in an axial direction of the crankshaft. The partition wall is formed with an opening that is communicated with the communicating hole.

A valve system is disclosed herein. The valve system, in one arrangement, may comprise: a fluid pathway for transporting a fluid; a first valve operably coupled to the fluid pathway, the first valve comprising a first resilient element; a second valve operably coupled to the fluid pathway, the second valve comprising a second resilient element that is substantially identical to the first resilient element; wherein, when the first valve is in a closed state, the first resilient element is compressed to a first length so that the first valve opens at a first pressure; and wherein, when the second salve is in a closed state, the second resilient element is compressed to a second length so that the second valve opens at a second pressure, the first length is less than the second length such that the second pressure is less than the first pressure.

An oil pan in an engine assembly comprises a housing including a bottom wall and a sidewall and an oil drain tube. The oil drain tube includes a tubing wall and a portion of the sidewall and is integrally formed with the housing.

A motor for a vehicle comprises: a motor housing; an oil sump mounted to the motor for oil to drain from the motor housing into the oil sump, a width of the oil sump being greater than a depth of the oil sump, the oil sump having an oil pickup for circulating the oil; and a valve member mounted at a pivot point inside the oil sump, the valve member enclosing an air cavity for buoyancy, wherein the valve member is configured to rotate about the pivot point due to being buoyed by the oil.

An oil pan may include a pan body forming a dual chamber including a primary chamber and a secondary chamber, and a mesh. The primary chamber and the secondary chamber each contains a different amount of oil, and the mesh allows a different amount of oil permeation discharged from the secondary chamber to the primary chamber based on temperature of the oil.

An oil sump for supplying an assembly of a motor vehicle, including: a housing including a housing frame, a housing base and a housing cover; and an oil accommodating space enclosed by the housing, and a suction channel which extends into the oil accommodating space and includes an opening via which oil can be delivered or suctioned from the oil accommodating space through the suction channel. The housing frame is arranged between the housing cover and the housing base. The housing frame itself and/or the housing frame together with the housing base and/or the housing cover forms one or more oil channels.

An oil sump for supplying an assembly of a motor vehicle, including: a housing including a housing frame and a closure part, such as for example a housing cover, which is joined to the housing frame; an oil accommodating space enclosed by the housing. The housing frame circumferentially surrounds the oil accommodating space; and a suction channel which extends into the oil accommodating space and includes an opening via which oil can be delivered or suctioned from the oil accommodating space through the suction channel. The suction channel is formed by the housing frame and the closure part.

A motor for a vehicle comprises: a motor housing; an oil sump mounted to the motor for oil to drain from the motor housing into the oil sump, a width of the oil sump being greater than a depth of the oil sump, the oil sump having an oil pickup for circulating the oil; and a valve member mounted at a pivot point inside the oil sump, the valve member enclosing an air cavity for buoyancy, wherein the valve member is configured to rotate about the pivot point due to being buoyed by the oil.