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1. WO2009014683 - EVAPORATIVE EMISSION CANISTER PURGE ACTUATION MONITORING SYSTEM

Publication Number WO/2009/014683
Publication Date 29.01.2009
International Application No. PCT/US2008/008874
International Filing Date 22.07.2008
IPC
F02M 25/08 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
25Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
08adding fuel vapours drawn from engine fuel reservoir
F02M 33/02 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
33Other apparatus for treating combustion-air, fuel or fuel-air mixture
02for collecting and returning condensed fuel
CPC
F02M 25/0836
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
25Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
08adding fuel vapours drawn from engine fuel reservoir
0836Arrangement of valves controlling the admission of fuel vapour to an engine, e.g. valve being disposed between fuel tank or absorption canister and intake manifold
F02M 25/089
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
25Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
08adding fuel vapours drawn from engine fuel reservoir
089Layout of the fuel vapour installation
Applicants
  • MAHLE INTERNATIONAL GmbH [DE]/[DE] (AllExceptUS)
  • XIA, Zhouxuan [CA]/[CA] (UsOnly)
  • MULKERAN, Kevin [US]/[US] (UsOnly)
  • CHAN, Wing [MY]/[US] (UsOnly)
  • JENSEN, Hans [DE]/[US] (UsOnly)
Inventors
  • XIA, Zhouxuan
  • MULKERAN, Kevin
  • CHAN, Wing
  • JENSEN, Hans
Agents
  • MCGLYNN, Gerald E., III
Priority Data
11/880,78124.07.2007US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) EVAPORATIVE EMISSION CANISTER PURGE ACTUATION MONITORING SYSTEM
(FR) SYSTÈME DE SURVEILLANCE D'ACTIONNEMENT DE PURGE D'ABSORBEUR DE VAPEURS DE CARBURANT
Abstract
(EN)
An evaporative emission canister purge actuation monitoring system (24, 124) includes an integrated valve body (26, 126) having a main flow passage (36, 136), a first one- way umbrella valve (40, 140) mounted to the valve body that is responsive to predetermined positive pressure in the main flow passage to control flow of fluid from a vapor canister to ambient air as well as a second one-way umbrella valve (42, 142) that is responsive to a predetermined negative pressure in the main flow passage to control the flow of ambient air through a fresh air port (34, 134). A vacuum actuated switch (46, 146) is supported by the integrated valve body and in electrical communication with a control unit. The switch (46, 146) is responsive to negative pressure in the main flow passage (36, 136) to send a signal indicative of the predetermined negative pressure to the control unit.
(FR)
L'invention concerne un système de surveillance d'actionnement de purge d'absorbeur de vapeurs de carburant (24, 124) qui comprend un corps de soupape intégré (26, 126) ayant un passage d'écoulement principal (36, 136), une première soupape parapluie anti-retour (40, 140), montée sur le corps de soupape, qui est sensible à une pression positive prédéterminée dans le passage d'écoulement principal pour réguler l'écoulement de fluide d'un absorbeur de vapeurs à l'air ambiant, ainsi qu'une seconde soupape parapluie anti-retour (42, 142) qui est sensible à une pression négative prédéterminée dans le passage d'écoulement principal pour réguler l'écoulement d'air ambiant à travers un orifice d'air frais (34, 134). Un dépressiocontacteur (46, 146) est supporté par le corps de soupape intégré et est en communication électrique avec une unité de commande. Le contacteur (46, 146) est sensible à une pression négative dans le passage d'écoulement principal (36, 136) pour envoyer un signal indicatif de la pression négative prédéterminée à l'unité de commande.
Also published as
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