A turbocharger lubricant cooler

摘要

A turbocharger for an internal combustion engine. The turbocharger comprises a housing 110 and one or more bearings 120. The housing comprises one or more coolant passages 114 for receiving a coolant to cool the turbocharger, and one or more lubricant passages 112 for receiving a lubricant to lubricate the bearings. The lubricant is for both the turbocharger bearings and the internal combustion engine. The coolant and lubricant passages are arranged in the housing to transfer heat from the lubricant in the lubricant passages to the coolant in the coolant passages. The coolant and lubricant passages are configured such that the transfer of heat between the two is sufficient to cool the lubricant and maintain it at a temperature that is suitable for subsequent use in the internal combustion engine. Temperature and/or flow rate sensors may be provided to monitor the temperature and/or flow rate of the lubricant and/or coolant. A controller may control the turbocharger in response to the temperature and/or flow rate.