EVAPORATOR FOR STRATIFICATION SCAVENGING ENGINE

Title:

EVAPORATOR FOR STRATIFICATION SCAVENGING ENGINE

Document Type and Number:

Japanese Patent JP2000220529

Kind Code:

A

Abstract:

To adjust an opening of a scavenging air valve independently of a throttle valve.

This evaporator for a stratification scavenging engine has a scavenging passage 12 having an air valve 5 and an intake passage 13 having a throttle valve 17 which are vertically arranged. A cover plate 2 is connected to an upper portion of an evaporator body 9 sandwiching a peripheral edge 4a of a film 4, to respectively determine a negative pressure chamber 3 on an upper side of the film 4, an atmospheric pressure chamber 7 on the lower side. The air valve 5 is connected to the film 4. A spring 21 is wound around a negative pressure introduction pipe 8 communicating a Venturi part 13a of the intake passage 13 with the negative pressure chamber 3 penetratingly the air valve 5, for energizing the air valve 5 in a closing direction.

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Inventors:

TOBIUCHI TERUHIKO
OKANE SHINICHI
AIHARA TAMIO

Application Number:

JP2420999A

Publication Date:

August 08, 2000

Filing Date:

February 01, 1999

Export Citation:

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Assignee:

NIPPON WALBRO KK

International Classes:

F02M17/04; F02B17/00; F02D9/02; F02M9/02; F02M19/00; F02M23/04; F02B75/02; (IPC1-7): F02M17/04; F02D9/02; F02M19/00

Attorney, Agent or Firm:

Toshio Yamamoto

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