公开(公告)号：US3620197A

公开(公告)日：1971-11-16

申请号：US3620197D

申请日：1970-01-20

Applicant: CATERPILLAR TRACTOR CO

Inventor： ALBRIGHT THOMAS M ,  BARTON JAMES S

IPC: F01M13/06 ,  F02F9/06 ,  F02M25/00

CPC classification number: F01M13/06

Abstract: A crankcase ventilating means comprises a spring-biased valve means adapted to open to vent gases from the crankcase of an internal combustion engine to the intake manifold thereof when the pressure of such gases exceeds a predetermined level. The opening and closing of the valve means is automatically controlled by pressure level variations occurring in a control chamber normally communicating with ambient air pressure, via a pressure sensing conduit, during ''''on land'''' operations. An open end of the conduit is positioned adjacent to a crankshaft sealing area to sense the increasing pressure level occasioned thereat due to progressive submersion of the engine in water. Thus, the pressure level in the crankcase, required to open the valve means, will automatically increase in direct proportion to the increased depth of engine submersion.

公开(公告)号：US3469565A

公开(公告)日：1969-09-30

申请号：US3469565D

申请日：1967-08-17

Applicant: CATERPILLAR TRACTOR CO

Inventor： WEBER ROBERT L ,  ALBRIGHT THOMAS M

IPC: F01M13/02 ,  F02B55/04 ,  F02M25/06

CPC classification number: F02B55/04 ,  F01M13/023 ,  Y10T137/7748