Title (en)

CRANKCASE VENTILATION

Publication

EP 0351521 A3 19900530 (DE)

Application

EP 89109354 A 19890524

Priority

DE 3824791 A 19880721

Abstract (en)

[origin: JPH0267414A] PURPOSE: To prevent an icing of ventilating points in an intake passageway of a ventilation system in which a ventilating pipe extending from an internal combustion engine is connected to a throttle valve casing by branching the ventilating pipe into a passageway through a primary ventilating point and a passageway through a secondary ventilating point in the throttle valve casing. CONSTITUTION: An internal combustion engine 1 comprises crank case ventilating points 10. A ventilating pipe 11 is directed from the ventilating points 10 to a throttle valve casing 6, and fixed to a connecting pipe 12 there. An end portion of the connecting pipe 12 in the throttle valve casing 6 is closed by a disc 13. In this case, two passageways 14, 15 are formed in the disc 13. One of the passages 15 opens at a primary ventilating point 16, and the other passages 14 opens at a secondary ventilating point 17. The primary ventilating point 16 is arranged upstream of a throttle valve 7 and the secondary ventilating point 17 is arranged downstream of the throttle valve 7 respectively. The passages 14 and the secondary ventilating point 17 are formed to have a cross- sectional area smaller than that of the passages 15.

IPC 1-7

F01M 13/00; F02M 15/02

IPC 8 full level

F01M 13/00 (2006.01); F01M 13/02 (2006.01); F02M 15/02 (2006.01); F01M 5/00 (2006.01)

CPC (source: EP US)

F01M 13/025 (2013.01 - EP US); F02M 15/022 (2013.01 - EP US); F01M 5/002 (2013.01 - EP US)

Citation (search report)

• [Y] DE 952221 C 19561115 - GEN MOTORS CORP
• [Y] FR 1570558 A 19690613
• [A] US 3116727 A 19640107 - DIETRICH HOWARD H
• [Y] DE 3726332 C1 19880623 - BAYERISCHE MOTOREN WERKE AG
• [YP] US 4811697 A 19890314 - KURAHASHI TOSHIO [JP]
• [A] US 2516547 A 19500725 - CARLSON HAROLD A, et al
• [A] FR 1401955 A 19650611
• [AP] US 4805564 A 19890221 - HUDSON JR SHARON J [US]
• [AD] US 3364910 A 19680123 - HULSE CRANSTON W

Designated contracting state (EPC)

DE FR GB IT SE

DOCDB simple family (publication)

EP 0351521 A2 19900124; EP 0351521 A3 19900530; EP 0351521 B1 19930811; DE 3824791 A1 19900125; DE 58905231 D1 19930916; JP 2662441 B2 19971015; JP H0267414 A 19900307; SU 1704642 A3 19920107; US 4922882 A 19900508

DOCDB simple family (application)

EP 89109354 A 19890524; DE 3824791 A 19880721; DE 58905231 T 19890524; JP 18761389 A 19890721; SU 4614453 A 19890706; US 37996789 A 19890714