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1. 发明专利

JPH05215022A VAPORIZED FUEL TREATING EQUIPMENT 失效
公开(公告)号：JPH05215022A
公开(公告)日：1993-08-24
申请号：JP4630992
申请日：1992-01-31
申请人： TOYODA GOSEI KK , TOYOTA MOTOR CORP , TOYOTA CENTRAL RES & DEV , NIPPON DENSO CO , AISAN IND
发明人： HANABUSA HISAO , OHASHI TAMIYOSHI , MIZUNO MASAMI , AOKI TOMOHIDE , MORIMITSU NOBUTAKA , ITO TAKAAKI , OTA TAKASHI , SATO NORIO , OKADA AKANE , KOYAMA NOBUHIKO , KOEDA KENJI , YAMADA HIDEO
IPC分类号： F02M25/08
摘要： PURPOSE:To prevent deterioration of absorbing performance of activated carbon in the case where a liquid content in vaporized fuel is absorbed to the activated carbon, and prevent a polymeric absorbent from being filled excessively during traveling of an automobile. CONSTITUTION:A lower chamber 34 is disposed under an activated carbon chamber 11. A polymer chamber 12 filled with an organic polymeric absorbent 5 is divided into a plurality of division chambers 121-125. An introducing pipe 15 for introducing vaporized fuel and a purge pipe 16 are connected to a first space chamber 31 disposed above the polymer chamber 12. A third space chamber 33 for sucking the atmosphere is provided above the activated carbon chamber 11, and is connected to an atmosphere pipe 17. The lower chamber 34 is communicated with a second space chamber 32 in the lower portion. The shallow filling depth of the polymeric absorbent 5 can prevent the polymeric absorbent 5 from being filled excessively. Consequently, the polymeric absorbent can be freely swelled, thereby enhancing absorbing performance of the polymer chamber.

2. 发明专利

JPH05202818A EVAPORATE FUEL DISPOSAL DEVICE 失效
公开(公告)号：JPH05202818A
公开(公告)日：1993-08-10
申请号：JP4008992
申请日：1992-01-30
申请人： TOYODA GOSEI KK , TOYOTA MOTOR CORP , TOYOTA CENTRAL RES & DEV , NIPPON DENSO CO , AISAN IND
发明人： HANABUSA HISAO , OHASHI TAMIYOSHI , MIZUNO MASAMI , AOKI TOMOHIDE , MORIMITSU NOBUTAKA , ITO TAKAAKI , OTA TAKASHI , SATO NORIO , OKADA AKANE , KOYAMA NOBUHIKO , KOEDA KENJI , YAMADA HIDEO
IPC分类号： F02M25/08
摘要： PURPOSE:To provide an evaporated fuel disposal device which may prevent liquid evaporated fuel from making contact with activated carbon and which may efficiently separate evaporated fuel from a polymer absorbent which absorbs evaporated fuel so as to be swelled. CONSTITUTION:An activated carbon chamber 11 filled therein with activated carbon is provided below a polymer chamber 12 filled with polymer absorbent 5. Further, an introduction pipe 15 and a purge pipe 17 are provided above the polymer chamber 12. An atmospheric air introduction pipe 17 is connected to the upper part of the activated carbon chamber 11. Further, a communication pipe 12 is connected between a second space chamber 32 and a fourth space chamber 35 below the activated carbon chamber 11. Columnar bodies 16 for promoting the separation of evaporated fuel is disposed in the polymer chamber 12.

3. 发明专利

JPH06129310A FLOW CHANGEOVER VALVE 失效
公开(公告)号：JPH06129310A
公开(公告)日：1994-05-10
申请号：JP30763792
申请日：1992-10-20
申请人： TOYODA GOSEI KK , NIPPON DENSO CO , TOYOTA CENTRAL RES & DEV , AISAN IND
发明人： AOKI TOMOHIDE , KOYAMA NOBUHIKO , MAEDA KAZUTO , OTA TAKASHI , KOEDA KENJI
IPC分类号： F02M25/08 , F02M37/00
摘要： PURPOSE:To provide a flow changeover valve with a simple structure and a low cost which can make purge adjustmeal so that no great amount of evaporated fuel may enter into an engine intake pipe. CONSTITUTION:A changeover valve body 3 is installed between an absorption chamber 21 filled with organic polymeric gel 4 and a space chamber 22. The absorption chamber 21 is comminucated with a fuel tank 9 and the space chamber 22 is comminucated with an engine intake pipe 5 through plural purge ports 271-273. When the organic polymeric gel 4 absorbs a great amount of evaporated fuel, the changeover valve body 3 is pushed by the expansion force so that a part of purge ports can be closed. Therefore, in purge operation, the flow rate of purge air becomes smaller and no great amount of separated and evaporated fuel flows into the engine intake pipe 5 from the organic polymeric gel 4. When the absorption amount of the evaporated fuel is small, an expansion amount is small and many purge ports are opened.

4. 发明专利

JPH0712017A CANISTER FOR AUTOMOBILE 失效
公开(公告)号：JPH0712017A
公开(公告)日：1995-01-17
申请号：JP17490593
申请日：1993-06-21
申请人： NIPPON DENSO CO
发明人： MAEDA KAZUTO , KOYAMA NOBUHIKO , ISHIGURO YUJI , TOKUDA HIROSHI
IPC分类号： F02M25/08
摘要： PURPOSE:To provide a canister for an automobile at a low cost with a small number of part items by having a filter of large ability for capturing dust in the air. CONSTITUTION:In a canister 10, an adsorbent 81 is stored in a case 12. The case 12 has an atmospheric port 13 in the one surface, tank port 14 connected to a fuel tank 92 and a purge port 15 connected to an engine 94 in the other surface. Filters 20, 21 are interposed between each port and the adsorbent 81, and in the atmospheric side filter 21 in a side of the atmospheric port 13, a sheet-shaped corrugated plate filter 210, alternately formed with a recessed part 211 and a protruded part 212, is provided.

5. 发明专利

JPH0921361A CANISTER 失效
公开(公告)号：JPH0921361A
公开(公告)日：1997-01-21
申请号：JP19589595
申请日：1995-07-06
申请人： NIPPON DENSO CO , NIPPON SOKEN
发明人： MAEDA KAZUTO , KOYAMA NOBUHIKO , KATO NAOYA
IPC分类号： F02M25/08
摘要： PROBLEM TO BE SOLVED: To realize a canister structure which can surely prevent the blow by of an evaporative fuel into the atmosphere by suppressing its diffusion, and has a low pressure loss. SOLUTION: A main chamber 1 furnishing an evaporative fuel leading-in port 16 and a purge port 17, and having an adsorbent layer 11 to adsorb the evaporative fuel; an auxiliary chamber 2 furnishing an atmosphere leading-in port 26, and having an adsorbent layer 21 to adsorb the evaporative fuel; and an air chamber 3 to connect the main chamber 1 and the auxiliary chamber 2 to each other; are provided. The air chamber 3 is partitioned into the first chamber 3A at the main chamber 1 side, the second chamber 3B at the auxiliary chamber 2 side, and the third chamber 3C provided between the first chamber 3A and the second chamber 3B, and the inside of the third chamber 3C are partitioned by partition walls 33 to form into a nonlinear continuous communicating passage 34, whose both ends are opened to the first chamber 3A and the second chamber 3B respectively. Since the communicating passage 34 can be made sufficiently long, it is not necessary to provide a throttle, and the diffusion prevention and the low pressure loss can be accomplished compatibly.

6. 发明专利

JPH07217506A EVAPORATED FUEL TREATMENT DEVICE FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH07217506A
公开(公告)日：1995-08-15
申请号：JP3185794
申请日：1994-02-02
申请人： NIPPON DENSO CO
发明人： KOYAMA NOBUHIKO , YAMAMOTO YUJI , TOKUDA HIROSHI , ISHIGURO YUJI
IPC分类号： F02M25/08
摘要： PURPOSE:To provide an evaporated fuel treatment device compact and easy to mount while being desirable in sealing since foreign matter or the like does not enter into a switching valve for leading the air into a canister. CONSTITUTION:An evaporated fuel treatment device 1 has a canister 10 disposed at a purge passage 31 connecting a fuel tank 51 and an intake pipe 52 to each other, a purge control valve 12 between the canister 10 and the intake pipe 52, and an air lead-in device 20. The air lead-in device 20 has a housing 21 having an air lead-in port 212 and a communicating port 211 to the canister 10, a switching valve 22 inserted in the air passage of the housing 21, and an air filter 23 inserted between the switching valve 22 and the air lead-in port 212. The canister 12 and the housing 21 of the air lead-in device 20 are integrally connected close to each other.

7. 发明专利

JPH06185423A EVAPORATION FUEL PROCESS DEVICE 失效
公开(公告)号：JPH06185423A
公开(公告)日：1994-07-05
申请号：JP34033392
申请日：1992-12-21
申请人： NIPPON DENSO CO
发明人： HOSOKAWA HIROYUKI , TAGAWA YASUO , MAEDA KAZUTO , KOYAMA NOBUHIKO , NAKAYAMA KAZUNORI , ISHIGURO YUJI
IPC分类号： F02M25/08
摘要： PURPOSE:To provide a canister which can be arranged without any large space exclusively used for it and which has a much adsorbent quantity of vapor. CONSTITUTION:A canister 1 is formed in an elongated shape, and consisting of a casing 17 formed of bellows and bend able, active carbon 15 for adsorbing vapor inside the casing 17, a vapor entrance 2 serving as the entrance of vapor, and vapor exits 3, 4 serving as the exits of the vapor, and an atmospheric port 5 for communicating the inside of the casing 17 always with the atmospheric air, and an atmosphere introduction passage 6 for communicating the inside of the casing 17 with the atmospheric, and check valves 7, 8, 16 arranged on the vapor exits 3, 4 and the atmospheric introduction passage 6, respectively and filters 11, 12.

8. 发明专利

JPS63215864A FUEL VAPOR EXHAUST SUPPRESSING DEVICE FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPS63215864A
公开(公告)日：1988-09-08
申请号：JP4948987
申请日：1987-03-04
申请人： NIPPON DENSO CO
发明人： ABE TOMOAKI , TAKAO MITSUNORI , KIYONO MASATOSHI , KAMIO SHIGERU , ISHIGURO YUJI , KOYAMA NOBUHIKO
IPC分类号： F02M25/08
摘要： PURPOSE:To realize a compact size and a light weight of an accumulating device by furnishing cooling device to cool the absorbent by utilizing a low temperature fluid, to the accumulating device in which the fuel vapor is absorbed to the absorbent. CONSTITUTION:The fuel vapor generated in a fuel container M2 in an internal combustion engine M1 is absorbed by the absorbent in an accumulating device M3. The absorbed fuel vapor is removed from the absorbent when the internal combustion engine M1 is operated, and exhausted into the suction system S of the internal combustion engine M1. In this case, a cooling device M4 to cool the absorbent by utilizing a low temperature fluid is furnished at the accumulating device M3. And when the amount of the fuel vapor generated in the fuel container M2 exceeds a specific value, and a fuel vapor detecting device M5 detects the generation of a large quantity of fuel vapor, the cooling device M4 is operated to cool the absorbent in the accumulating device M3. Therefore, the absorption amount of the absorbent is increased, and the exhaust of the fuel vapor to the atmosphere can be prevented sufficiently.

9. 发明专利

JPH07139387A FUEL INJECTION AMOUNT CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH07139387A
公开(公告)日：1995-05-30
申请号：JP28819893
申请日：1993-11-17
申请人： NIPPON DENSO CO
发明人： MORIKAWA JUNYA , TAMURA HIROSHI , KOYAMA NOBUHIKO , MAEDA KAZUTO
IPC分类号： F02M25/08 , F02D41/02 , F02D41/10 , F02D41/12 , F02D41/14 , F02D45/00
摘要： PURPOSE:To prevent deterioration of air-fuel ratio controllability owing to a delay in an actual purge amount occurring because of a canister being separated away from an intake pipe. CONSTITUTION:When it is detected that an idle switch 35 is switched from ON to OFF or from OFF to ON a logic value of a purge flow rate available when purge is effected for a given time is calculated. Further, the change of the pressure of a canister part 17 changed for the given time is calculated from a detecting value from a canister pressure sensor 38. From a detecting pressure change amount DELTAPCN and a computed logic value DELTAQPG, a purge flow rate correction factor KNQPG is calculated by a formula of KNQPG=-1-d(DELTAPCN /DELTAQPG). From the purge flow rate correction factor KNQPG, a fuel injection amount is corrected.

10. 发明专利

JPH07109937A FUEL INJECTION QUANTITY CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH07109937A
公开(公告)日：1995-04-25
申请号：JP25848293
申请日：1993-10-15
申请人： NIPPON DENSO CO
发明人： MORIKAWA JUNYA , TAMURA HIROSHI , KOYAMA NOBUHIKO , MAEDA KAZUTO
IPC分类号： F02M25/08 , F02D41/02
摘要： PURPOSE:To restrict deterioration of air-fuel ratio controllability due to the pressure loss in a purge piping or in a canister. CONSTITUTION:When not-purged flag XIPGR is zero, the number of revolutions NE of an engine 1 is read from output of an engine speed sensor 37. The intake pipe pressure PM is then read from output of a pressure sensor of an intake pipe 2 so as to calculate the difference between the intake pipe pressure and the atmospheric pressure. Further, the pressure PCN between a canister 17 and a purge control valve 23 is read to calculate the difference between the intake pipe pressure PM and it. A purge-flow correction factor KNQPG is then determined by the following formula; KNQPG=alpha{(PCN-PM)/(ATP-PM)} . The purge- flow correction factor determined by the formula is reflected in the calculation of the fuel injection quantity.

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