Transmission with lubrication device

A transmission, comprising;

• a housing having an interior divided by a partition wall into a first transmission section and a second transmission section;
• a transmission element disposed for rotation within the first transmission section;
• a store of liquid for lubricating and cooling the transmission element arranged in the second transmission section;
• a collection device including a reservoir for collecting liquid thrown off by the transmission element and associated with an upper portion of the partition wall of the housing, the collection device further including a distinct return passage extending through the partition wall and through which a first portion of the collected liquid in the reservoir is conveyed to the first transmission section, and an outlet passage through which a second portion of the collected liquid in the collection device is conveyed to the second transmission section;
• and
• a passage located at a lower portion of the housing and which extends through the partition wall between the first and second transmission sections, the passage having a temperature dependent restrictor element which inhibits the flow of liquid from the second transmission section into the first transmission section when the liquid within the first transmission section has a fluid temperature below a threshold value and enables the flow of liquid from the second transmission section into the first transmission section when the liquid in the first transmission section has a fluid temperature exceeding the threshold value.

A transmission, comprising:

• a housing having an interior divided by a partition wall into a first transmission section and a second transmission section;
• a transmission element disposed for rotation within the first transmission section;
• a store of liquid for lubricating and cooling the transmission element arranged in the second transmission section;
• a collection device including a collection reservoir for collecting liquid thrown off by the transmission element and associated with a first portion of the partition wall, the collection device further including a distinct return passage extending through the partition wall and through which a first portion of the collected liquid is conveyed from the collection reservoir to the first transmission section, and an outlet passage through which a second portion of the collected liquid is conveyed from the collection device to the second transmission section;
• and
• a passage extending through a second portion of the partition wall between the first and second transmission sections, the passage having a temperature dependent restrictor element which inhibits the flow of liquid from the second transmission section into the first transmission section when the liquid within the first transmission section has a fluid temperature below a threshold value and enables the flow of liquid from the second transmission section into the first transmission section when the liquid in the first transmission section has a fluid temperature exceeding the threshold value.