摘要:
A fuel vapor adsorbing device (10, 60, 70, 70′, 80) for adsorbing residual fuel vapors that remain in an intake conduit (1, 2, 3, 4) of an induction system of an internal combustion engine when the internal combustion engine is stopped may include an adsorbing member (40, 40′) that is constructed to adsorb the residual fuel vapors and is disposed along an inner wall surface of the intake conduit. The adsorbing member is arranged and constructed to form a supplemental intake path (T, T′, T′″) between the adsorbing member and the inner wall surface of the intake conduit, so that intake air of the engine can flow through the supplemental intake path.
摘要:
A fuel vapor adsorbing device (10, 60, 70, 70′, 80) for adsorbing residual fuel vapors that remain in an intake conduit (1, 2, 3, 4) of an induction system of an internal combustion engine when the internal combustion engine is stopped may include an adsorbing member (40, 40′) that is constructed to adsorb the residual fuel vapors and is disposed along an inner wall surface of the intake conduit. The adsorbing member is arranged and constructed to form a supplemental intake path (T, T′, T′″) between the adsorbing member and the inner wall surface of the intake conduit, so that intake air of the engine can flow through the supplemental intake path.
摘要:
An evaporative fuel adsorbent 32, which adsorbs evaporative fuel, is positioned substantially parallel to a sidewall surface 30 of a surge tank 22. A retention member 34 is positioned between the sidewall surface 22 and evaporative fuel adsorbent 32 to prevent oil, which runs down on the sidewall surface 22, from adhering to the evaporative fuel adsorbent 32. The evaporative fuel adsorbent 32 is mounted on the sidewall surface 30 of the surge tank 22 via the retention member 34.
摘要:
An evaporative fuel adsorbent 32, which adsorbs evaporative fuel, is positioned substantially parallel to a sidewall surface 30 of a surge tank 22. A retention member 34 is positioned between the sidewall surface 22 and evaporative fuel adsorbent 32 to prevent oil, which runs down on the sidewall surface 22, from adhering to the evaporative fuel adsorbent 32. The evaporative fuel adsorbent 32 is mounted on the sidewall surface 30 of the surge tank 22 via the retention member 34.
摘要:
A sheet-like adsorption filter formed by sandwiching particulate activated carbon with heat-resistant nets and non-woven fabric sheets that have a percentage of void of 90% or higher, is disposed at an internal combustion engine side of a filter element.
摘要:
A shut off valve is provided in an intake line farther upstream than a throttle valve of the intake passage and farther downstream than an air cleaner. This shut off valve is opened by a signal or the like from an ECU when an engine is operating. Further, the shut off valve closes when the engine is stopped so as to suppress evaporative fuel inside the intake passage from flowing outside through the air cleaner. The evaporative fuel trapped inside the intake passage passes through a bypass passage that provides communication between the intake passage and the canister, and is then adsorbed with an adsorbent in the canister. A blow-by passage is also connected to the intake passage that is closed off by the shut off valve. Because the blow-by passage is closed off by a blow-by valve, which is closed during normal operation when the engine is stopped, sticking of the shut off valve and the throttle valve and the like due to the inflow of blow-by gas into the intake passage is inhibited.
摘要:
A filter portion of a filter includes a plurality of bag-like members. The bag-like members are formed in a container shape having an opening and disposed with intervals therebetween. The periphery of the opening of each bag-like member is supported by a supporting member, and the bag-like members are mutually connected by the supporting member. Consequently, the strength of the filter portion comprising the bag-like members is improved.
摘要:
An absorbent, such as, for example, an active carbon, is provided in an intake air passage, for example, in an air cleaner, to efficiently adsorb fuel vapor. To ensure that fuel vapor adsorbed into the intake air passage can be efficiently desorbed even when there is only a small amount of the intake air, an intake throttle valve is provided upstream of the adsorbent and an opening of the intake throttle valve is throttled so as to decompress an area near the adsorbent. Desorption of fuel vapor also can be efficiently promoted by using a heater to directly heat the adsorbent in the intake air passage or by heating the intake air to indirectly heat the adsorbent.
摘要:
A filter medium has a function member accommodated between two fiber layers. A production method for manufacturing a filter medium includes the steps of: preparing a first fiber layer having a shape identical to that of a side surface of the filter medium; disposing a function member on a surface of the first fiber layer; and forming a second fiber layer by spinning partially melted fibers onto the function member disposed on the surface of the first fiber layer. Therefore, it is unnecessary to carry out press-forming in a state in which the function member is sandwiched between nonwoven fabrics, and a countermeasure to prevent the function member from falling out and a countermeasure to prevent the nonwoven fabric from being torn by the function member are unnecessary.
摘要:
An air filter is substantially made up of a filter element having a pleated filtering portion and a collar portion that extends on an outer periphery of the filtering portion and that has a sealing function, the filtering portion and the collar portion being integrally formed from the same material, and a cap and a case each of which has a flange for clamping the collar portion of the filter element. One of the flange of the cap and the flange of the case has a protruded portion that has an inclined portion. The collar portion of the filter element has a recess portion that contacts the inclined portion of the protruded portion and is guided by the inclined portion and fits to the protruded portion at a predetermined position so as to become set in position.