Engine lubrication structure and motorcycle

Patent metadata

Field	Value
Publication number	US-10082056-B2
Application number	US-201615279108-A
Country	US
Kind code	B2
Filing date	Sep 28, 2016
Priority date	Oct 27, 2015
Publication date	Sep 25, 2018
Grant date	Sep 25, 2018

Abstract

An engine lubrication structure supplies oil stored in an oil pan disposed under a crank case to individual components in the crank case, and includes: a turbocharger which compresses intake air with exhaust gas of an engine; an oil passage which supplies oil to the turbocharger; and an oil return passage which returns oil from the turbocharger to the oil pan, and the crank case is provided with a connection port of the oil return passage, and the connection port is disposed below an oil surface that occurs during operation of the engine and above an oil surface that occurs when a side stand is used.

First claim

What is claimed is:

1. An engine lubrication structure which supplies oil stored in an oil pan disposed under a crank case to individual components in the crank case, comprising:
a turbocharger which compresses intake air with exhaust gas of an engine of a vehicle having a side stand;
an oil passage which supplies oil to the turbocharger; and
an oil return passage which returns oil from the turbocharger to the oil pan, wherein:
the crank case is provided with a connection port of the oil return passage, and the side stand is configured so that the connection port is disposed below an oil surface that occurs when the side stand is not used and above the oil surface when the side stand is used.

2. The engine lubrication structure according to claim 1 , wherein the turbocharger is disposed above the oil pan, and the connection port is disposed at a front surface of the crank case on an opposite side to the side stand in the left-right direction.

3. The engine lubrication structure according to claim 1 , wherein the oil return passage is larger in sectional area than the oil passage.

4. The engine lubrication structure according to claim 2 , wherein the oil return passage is larger in sectional area than the oil passage.

Assignees

• Suzuki Motor Corp

Inventors

• Tsukamoto Kohei
• Yagi Shintaro
• Oda Tomoyuki

Classifications

• F01M2011/021

  for lubricating auxiliaries, e.g. pumps or turbo chargers · CPC title

• F01M2011/0033

  with special means for guiding the return of oil into the sump · CPC title

• F01M11/0004

  Oilsumps · CPC title

• F02B39/14

  Lubrication of pumps; Safety measures therefor · CPC title

• F01M11/02 Primary

  Arrangements of lubricant conduits · CPC title