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1. 发明专利

JP2007211655A Evaporated-fuel treatment device 有权
标题翻译：蒸发燃料处理装置
公开(公告)号：JP2007211655A
公开(公告)日：2007-08-23
申请号：JP2006031278
申请日：2006-02-08
申请人： Denso Corp , Nippon Soken Inc , Toyota Motor Corp , トヨタ自動車株式会社 , 株式会社デンソー , 株式会社日本自動車部品総合研究所
发明人： NISHIMURA YUSAKU , KANO MASAO , TAKAKURA SHINSUKE , AMANO NORIYASU
IPC分类号： F02M25/08
摘要： PROBLEM TO BE SOLVED: To increase the durability of an evaporated-fuel treatment device by detecting the state of evaporated fuel at proper timings.
SOLUTION: An ECU performs a program including steps of: (S102) operating a timer until a predetermined time is elapsed when the purge of fuel is turned off (YES in S100); (S104) turning on a solenoid valve; (S108) detecting the concentration of the evaporated fuel when the pressure detected by a differential pressure sensor is equal to or higher than a predetermined threshold Pa (YES in S106); and (S110) calculating the purged amount of fuel.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：通过在合适的时间检测蒸发燃料的状态来提高蒸发燃料处理装置的耐久性。解决方案：ECU执行程序，包括以下步骤：（S102）操作定时器，直到在燃料清除被关闭时经过预定时间（S100中为“是”）; （S104）接通电磁阀; （S108）当由差压传感器检测到的压力等于或高于预定阈值Pa时检测蒸发燃料的浓度（S106中为“是”）。和（S110）计算清除燃料量。版权所有（C）2007，JPO＆INPIT

2. 发明专利

JP2006291709A Gas density ratio detection device, concentration detection device and fuel vapor treatment device 有权
标题翻译：气体密度比检测装置，浓度检测装置和燃料蒸气处理装置
公开(公告)号：JP2006291709A
公开(公告)日：2006-10-26
申请号：JP2005108881
申请日：2005-04-05
申请人： Denso Corp , Nippon Soken Inc , Toyota Motor Corp , トヨタ自動車株式会社 , 株式会社デンソー , 株式会社日本自動車部品総合研究所
发明人： TAKAKURA SHINSUKE , KANO MASAO , AMANO NORIYASU , KIYOMIYA SHINSUKE , NISHIMURA YUSAKU
IPC分类号： F02M25/08 , G01F1/42
CPC分类号： F02D41/0045 , F01N11/007 , F02D41/0032 , F02M25/089
摘要： PROBLEM TO BE SOLVED: To provide a gas density ratio detection device accurately detecting density ratio of a plurality of kinds of gas.
SOLUTION: This device is provided with: a measurement passage 24 having a plurality of kinds of gas flowing in from an upstream side end part at different timing; a pump communicating to a downstream side end part of the measurement passage 24 to reduce pressure in the measurement passage; an orifice 14 provided in a middle part of the measurement passage 24 and reducing passage area of the measurement passage 24; an exfoliation suppression means 16 suppressing exfoliation of the plural kinds of gas from an inner wall surface 24c of the measurement passage 24 at the downstream side more than the orifice 14; a measurement means measuring pressure difference between both ends of the orifice 14 or flow rate of gas passing through the orifice 14 under a condition where pressure in the measurement passage is reduced by the pump; and a density ratio calculation means calculating density ratio of the plural kinds of gas based on pressure difference or flow rate measured by the measuring means.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种准确地检测多种气体的密度比的气体密度比检测装置。解决方案：该装置具有：测量通道24，其具有在不同时机从上游侧端部流入的多种气体; 与测量通道24的下游侧端部连通以减小测量通道中的压力的泵; 设置在测量通道24的中间部分并减小测量通道24的通道面积的孔14; 剥离抑制装置16，抑制多个气体从比测量通道24的内壁面24c在下游侧多于孔口14的剥离; 在测量通道中的压力被泵减小的情况下，测量孔14的两端之间的压力差或通过孔14的气体的流量; 并且密度比计算装置根据由测量装置测量的压力差或流量计算多种气体的密度比。版权所有（C）2007，JPO＆INPIT

3. 发明专利

JP2007077950A Evaporating fuel treatment device 有权
标题翻译：蒸发燃料处理设备
公开(公告)号：JP2007077950A
公开(公告)日：2007-03-29
申请号：JP2005269867
申请日：2005-09-16
申请人： Denso Corp , Nippon Soken Inc , Toyota Motor Corp , トヨタ自動車株式会社 , 株式会社デンソー , 株式会社日本自動車部品総合研究所
发明人： KANO MASAO , TAKAKURA SHINSUKE , AMANO NORIYASU , KIYOMIYA SHINSUKE , NISHIMURA YUSAKU
IPC分类号： F02M25/08
CPC分类号： F02M25/0836 , F02D41/0045 , F02D2200/0406 , F02D2200/703 , F02D2250/41 , F02M25/089
摘要： PROBLEM TO BE SOLVED: To provide an evaporating fuel treatment device for increasing the frequency of purge and the amount of the purge. SOLUTION: Cut-off pressure, which a differential pressure sensor 40 detects when a pump 22 is operated and a throttle 34 provided in a detection passage 112 is shut off at its atmosphere side, and air pressure, which the differential pressure sensor 40 detects when the throttle 34 is communicated with the atmosphere and air passes through the throttle 34, are detected during purge. Mixture pressure of an air-evaporating fuel mixture, which the differential pressure sensor 40 detects when the throttle 34 is communicated with a first canister 12 and the air-evaporating fuel mixture passes through the throttle 34, is detected during purge stop. An ECU 30 calculates the evaporating fuel concentration of the mixture to be purged from the first canister 12 to a suction passage 16 in accordance with the cut-off pressure, the air pressure and the mixture pressure. The opening of a purge valve 14 is set in accordance with the calculated evaporating fuel concentration. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于增加吹扫频率和吹扫量的蒸发燃料处理装置。解决方案：差压传感器40在泵22运行时检测到的切断压力和设置在检测通道112中的节气门34在其大气侧被切断，以及空气压力，差压传感器当检测到节气门34与大气连通并且空气通过节流阀34时，在吹扫期间检测到。在净化停止期间检测空气蒸发燃料混合物的混合压力，其中差压传感器40在节流阀34与第一罐12连通并且空气蒸发燃料混合物通过节流阀34时检测到。 ECU30根据截止压力，空气压力和混合压力，计算从第一罐12向吸入通道16排出的混合物的蒸发燃料浓度。根据计算的蒸发燃料浓度来设定清洗阀14的打开。版权所有（C）2007，JPO＆INPIT

4. 发明专利

JP2006312925A Fuel vapor treatment apparatus 有权
标题翻译：燃油蒸气处理设备
公开(公告)号：JP2006312925A
公开(公告)日：2006-11-16
申请号：JP2005291437
申请日：2005-10-04
申请人： Denso Corp , Nippon Soken Inc , Toyota Motor Corp , トヨタ自動車株式会社 , 株式会社デンソー , 株式会社日本自動車部品総合研究所
发明人： KANO MASAO , TAKAKURA SHINSUKE , NAKANO TOMOAKI , AMANO NORIYASU , KIYOMIYA SHINSUKE , NISHIMURA YUSAKU
IPC分类号： F02M25/08
CPC分类号： F02M25/089 , F02D41/0032 , F02D41/0045
摘要： PROBLEM TO BE SOLVED: To provide a fuel vapor treatment apparatus accurately measuring a fuel vapor concentration. SOLUTION: The fuel vapor treatment apparatus is provided with a first cansiter adsorbing fuel vapor, a purge passage 27 purging desorbed vapor from the first canister 12 to an intake passage 3, an atmosphere passage 30 opened to the atmosphere, a first detection passage 28 having a restrictor 50, a passage changing valve 20 changing a communication passage of the first detection passage 28 between the passages 27 and 30, a second canister 13 communicated with the first detection passage 28 in an opposite side to the passage changing valve 20 across the restrictor 50 in between to adsorb fuel vapor flowng in from the first detection passage 28, a second detection passage 32 communicated with the second canister, a differential pressure sensor 16 detecting a differential pressure between both ends of the restrictor 50, a pump 14 communicated with the second detection passage 32 and carrying out pressure reduction of the second detection passage 32 during a detection period of the differential pressure by the differential pressure sensor 16, and an ECU 38 calculating the fuel vapor concentration on the basis of a detection result of the differential pressure sensor 16. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种精确测量燃料蒸气浓度的燃料蒸汽处理装置。解决方案：燃料蒸汽处理装置设置有第一罐吸附燃料蒸气，净化通道27，其从第一罐12向吸入通道3吹扫解吸的蒸气，向大气开放的气氛通道30，第一检测具有节流器50的通道28，改变通道27和30之间的第一检测通道28的连通通道的通道切换阀20，与通道切换阀20相对的一侧与第一检测通道28连通的第二罐13 跨越限制器50，以吸收从第一检测通道28流入的燃料蒸汽，与第二罐连通的第二检测通道32，检测限制器50的两端之间的压差的差压传感器16，泵14 与第二检测通道32连通，并在差异检测期间进行第二检测通道32的减压基于压差传感器16的检测结果计算出燃料蒸气浓度的ECU38，通过差压传感器16的临时压力。（C）2007，JPO＆INPIT

5. 发明专利

JP2006161690A Fuel vapor treatment device 有权
标题翻译：燃油蒸汽处理装置
公开(公告)号：JP2006161690A
公开(公告)日：2006-06-22
申请号：JP2004354507
申请日：2004-12-07
申请人： Denso Corp , Nippon Soken Inc , Toyota Motor Corp , トヨタ自動車株式会社 , 株式会社デンソー , 株式会社日本自動車部品総合研究所
发明人： KANO MASAO , TAKAKURA SHINSUKE , AMANO NORIYASU , KIYOMIYA SHINSUKE , NISHIMURA YUSAKU
IPC分类号： F02M25/08
CPC分类号： F02D41/0045 , F02D41/004 , F02D2200/703 , F02M25/089
摘要： PROBLEM TO BE SOLVED: To provide a fuel vapor treatment device accurately measuring fuel vapor concentration in a short period of time. SOLUTION: This device is provided with a canister 12 adsorbing fuel vapor, a purge passage 27 leading air fuel mixture containing vapor desorbing from the canister 12 to an air intake passage 3, an atmospheric air passage 30 opening to atmospheric air, a detection passage 28 including a throttle 50, a passage change over valve changing a communication passage of the detection passage 28 between the purge passage 27 and the atmospheric passage 30, a pump 14 communicating to the detection passage 28 in an opposite side of the passage change over valve 20 over the throttle 50, a differential pressure sensor 16 detecting pressure difference between both ends of the throttle 50, and ECU 38 calculating fuel vapor concentration in air fuel mixture based on detection result of the differential pressure sensor 16. Pressure difference is detected by the differential pressure sensor 6 in detection period until air fuel mixture reaches the pump 14, after the passage change over valve 20 makes communication between the purge passage 27 and the detection passage 28 after air fuel mixture passes the throttle 50 and the pump 14 reduces pressure in the detection passage 28 to make air fuel mixture pass through the throttle 50. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种在短时间内精确测量燃料蒸气浓度的燃料蒸汽处理装置。解决方案：该装置设置有吸附燃料蒸气的罐12，引导空气燃料混合物的吹扫通道27，其包含从罐12解吸到蒸气进气通道3的空气燃料混合物，与大气隔开的大气通道30，包括节流阀50的检测通道28，改变清洗通道27和大气通道30之间的检测通道28的连通通道的通道换向阀，在通道变化的相反侧与检测通道28连通的泵14 超过节流阀50的过压阀20，检测节气门50两端的压力差的差压传感器16以及基于差压传感器16的检测结果计算空气燃料混合物中的燃料蒸气浓度的ECU38。检测压力差通过差压传感器6，直到空气燃料混合物到达泵14的检测期间，在通过阀20之后转换为c 在空气燃料混合物通过节流阀50和泵14之后，净化通道27和检测通道28之间的通风降低了检测通道28中的压力，使得空气燃料混合物通过节流阀50.版权所有（C）2006 ，JPO＆NCIPI

6. 发明专利

JP2008144739A Evaporated fuel treatment device 有权
标题翻译：蒸发燃料处理装置
公开(公告)号：JP2008144739A
公开(公告)日：2008-06-26
申请号：JP2006336152
申请日：2006-12-13
申请人： Denso Corp , Nippon Soken Inc , 株式会社デンソー , 株式会社日本自動車部品総合研究所
发明人： TAKAKURA SHINSUKE , KANO MASAO , AMANO NORIYASU
IPC分类号： F02M25/08 , F02D41/02 , F02D41/04 , F02D45/00
CPC分类号： F02M25/089
摘要： PROBLEM TO BE SOLVED: To provide an evaporated fuel treatment device implementing both a large volume of purge and a highly accurate air-fuel ratio control.
SOLUTION: The evaporated fuel treatment device comprises: a canister having an adsorbent adsorbing evaporated fuel generated in a fuel tank; a detection system detecting an evaporated fuel concentration in mixture gas made by mixing air to the evaporated fuel desorbed from the adsorbent; a purge passage flowing mixture gas to an internal combustion engine side; a control means controlling purge based on an evaporated fuel state quantity detected by the detection system; and an ECU as a learning means learning the evaporated fuel concentration in the mixture gas purged by a purge control, based on an operational state quantity of the internal combustion engine. On condition that a difference between learned concentration D
1 at the end in a previous purge and detected concentration D
d detected after the previous purge is a set value ΔD or more, the ECU controls the purge based on the learned concentration D
1 (S105), before the purge control based on the detected concentration D
d (S106).
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供实现大量吹扫和高精度空燃比控制的蒸发燃料处理装置。蒸发燃料处理装置包括：具有吸附在燃料箱中产生的蒸发燃料的吸附剂的罐; 检测系统，其检测通过将空气与从吸附剂解吸的蒸发燃料混合而制成的混合气体中的蒸发燃料浓度; 将混合气体流入内燃机侧的吹扫通道; 基于由所述检测系统检测到的蒸发燃料状态量控制吹扫的控制装置; 以及作为学习装置的ECU，其基于内燃机的运转状态来学习通过清扫控制清除的混合气体中的蒸发燃料浓度。在先前清洗结束时的学习浓度D 1 与前次清洗后检测浓度D d 的差为设定值ΔD以上的条件下，在基于检测浓度D D 的清洗控制之前，ECU基于学习浓度D 1 控制吹扫（S106）。版权所有（C）2008，JPO＆INPIT

7. 发明专利

JP2007182813A Evaporated fuel treating device of internal combustion engine 审中-公开
标题翻译：内燃机的蒸发燃料处理装置
公开(公告)号：JP2007182813A
公开(公告)日：2007-07-19
申请号：JP2006001829
申请日：2006-01-06
申请人： Denso Corp , Nippon Soken Inc , 株式会社デンソー , 株式会社日本自動車部品総合研究所
发明人： TAKAKURA SHINSUKE , KANO MASAO , AMANO NORIYASU
IPC分类号： F02M25/08
摘要： PROBLEM TO BE SOLVED: To provide an evaporated fuel treating device of an internal combustion engine capable of quickly measuring an evaporated fuel concentration in a mixture.
SOLUTION: The evaporated fuel treating device includes a canister 13 having an adsorbent 14 for temporarily adsorbing evaporated fuel and a space layer 19, a purge pipe 15 for introducing the mixture containing evaporated fuel separated from the adsorbent 14 to an intake pipe 2, and a purge control valve 16 for adjusting a flow rate of the mixture introduced from the purge pipe 15 to the intake pipe 2 based on a measuring result of the evaporated fuel concentration in the mixture. The device comprises a concentration detection unit 20 disposed outside the canister 13 and a supply pipe 25 for sucking the mixture from the canister 13 and supplying it to the concentration detection unit 20, wherein an intake opening of the supply pipe 25 is located closer to an adsorbent 14 side than an inner wall surface of an upper wall 131. The evaporated fuel concentration in the mixture sucked from the suction opening of the supply pipe 25 approaches the evaporated fuel concentration of the mixture during actual purge in a relatively short time, and therefore the evaporated fuel concentration of the mixture can be measured quickly.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供能够快速测量混合物中蒸发的燃料浓度的内燃机的蒸发燃料处理装置。蒸发燃料处理装置包括具有临时吸附蒸发燃料的吸附剂14和空间层19的罐13，用于将从吸附剂14分离的包含蒸发燃料的混合物引入进气管2的吹扫管15 以及用于基于混合物中蒸发的燃料浓度的测量结果来调节从吹扫管15引入到进气管2的混合物的流量的清洗控制阀16。该装置包括设置在罐13外部的浓度检测单元20和用于从罐13吸取混合物并将其供应到浓度检测单元20的供给管25，其中供应管25的进气口位于更接近吸附剂14侧比上壁131的内壁表面。从相对短的时间内在实际吹扫期间，从供给管25的吸入口吸入的混合物中蒸发的燃料浓度接近混合物的蒸发燃料浓度，因此可以快速测量混合物的蒸发燃料浓度。版权所有（C）2007，JPO＆INPIT

8. 发明专利

JP2007154661A Evaporated fuel treatment device 有权
标题翻译：蒸发燃料处理装置
公开(公告)号：JP2007154661A
公开(公告)日：2007-06-21
申请号：JP2005346475
申请日：2005-11-30
申请人： Denso Corp , Nippon Soken Inc , 株式会社デンソー , 株式会社日本自動車部品総合研究所
发明人： KANO MASAO , TAKAKURA SHINSUKE , AMANO NORIYASU
IPC分类号： F02M25/08 , B60K15/077 , F02M37/00
CPC分类号： F02M25/089 , F02D41/0045 , F02D41/062 , F02D2200/0612
摘要： PROBLEM TO BE SOLVED: To provide an evaporated fuel treatment device which controls with high accuracy the amount of evaporated fuel purged from a fuel tank to an intake passage irrespective of fuel characteristics.
SOLUTION: A fuel tank 10 and an intake passage 12 are connected to each other through a purge passage 100. A purge valve 16 controls a flow rate of fluid passing through the purge passage 100. A solenoid valve 32 changes over communication and disconnection between a throttle 30 and a passage 110 on the fuel tank 10 side and between the throttle 30 and a passage 114 on an air side. An evaporate fuel concentration in the tank 10 is measured by controlling the changeover state of the solenoid valve 32 and detecting air pressure ΔP
AIR when only air passes through the throttle 30, mixture pressure ΔP
GAS when the mixture of air and evaporated fuel in the fuel tank 10 passes through the throttle 30 and shut-off pressure P
t when blocking the air side of the throttle 30 by a pressur sensor 40. The opening of a purge valve 16 is controlled in accordance with the evaporate fuel concentration in the tank 10.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种蒸发燃料处理装置，其高精度地控制从燃料箱向进气通道吹扫的蒸发燃料的量，而与燃料特性无关。解决方案：燃料箱10和进气通道12通过吹扫通道100彼此连接。清洗阀16控制通过清洗通道100的流体的流量。电磁阀32改变通信和节气门30与燃料箱10一侧的通道110以及节气门30与空气侧的通路114之间的断开。通过控制电磁阀32的切换状态并且仅在空气通过节流阀30时检测空气压力ΔP AIR 来测量罐10中的蒸发燃料浓度，混合压力ΔP GAS < / SB>当通过压力传感器40阻塞节流阀30的空气侧时，燃料箱10中的空气和蒸发燃料的混合物通过节流阀30和关闭压力P 。根据罐10中的蒸发燃料浓度来控制排气阀16的打开。版权所有：（C）2007，JPO＆INPIT

9. 发明专利

JP2009008012A Evaporated fuel treatment device 审中-公开
标题翻译：蒸发燃料处理装置
公开(公告)号：JP2009008012A
公开(公告)日：2009-01-15
申请号：JP2007170121
申请日：2007-06-28
申请人： Denso Corp , Nippon Soken Inc , 株式会社デンソー , 株式会社日本自動車部品総合研究所
发明人： TAKAKURA SHINSUKE , KANO MASAO , AMANO NORIYASU
IPC分类号： F02M25/08
CPC分类号： F02M25/089 , F02D41/0042 , F02D41/0045
摘要： PROBLEM TO BE SOLVED: To accurately estimate the concentration of an evaporated fuel at a fuel injection valve.
SOLUTION: A transportation time required for the evaporated fuel passing through a purge valve 17 immediately after the purge valve 17 is opened to reach the fuel injection valve after the purge valve 17 is opened is calculated. The concentration of the evaporated fuel at the fuel injection valve after the transportation time is elapsed is calculated based on a time lag curve of first order specified by the maximum varied amount of the concentration of the evaporated fuel and a time constant. The disturbance of air-fuel ratio when purge treatment is started can be suppressed by setting the corrected amount of fuel injection amount according to the concentration of the evaporated fuel at the fuel injection valve 6.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：准确地估计燃料喷射阀处的蒸发燃料的浓度。解决方案：计算在净化阀17打开之后，清洗阀17打开后立即通过清洗阀17所需的蒸发燃料到达燃料喷射阀所需的运输时间。基于由蒸发燃料的浓度的最大变化量指定的一阶时间延迟曲线和时间常数来计算经过运送时间之后的燃料喷射阀处的蒸发燃料的浓度。通过根据燃料喷射阀6处的蒸发燃料的浓度设定校正量的燃料喷射量，可以抑制清洗处理开始时的空燃比干扰。（C）2009，JPO＆INPIT

10. 发明专利

JP2007113519A Evaporated fuel treatment device 有权
标题翻译：蒸发燃料处理装置
公开(公告)号：JP2007113519A
公开(公告)日：2007-05-10
申请号：JP2005307219
申请日：2005-10-21
申请人： Denso Corp , Nippon Soken Inc , 株式会社デンソー , 株式会社日本自動車部品総合研究所
发明人： AMANO NORIYASU , KATO NAOYA , TAKAKURA SHINSUKE , KANO MASAO
IPC分类号： F02M25/08 , F02D41/02 , F02D41/04 , F02D45/00
CPC分类号： F02D41/0045 , F02D41/1454 , F02D41/2451 , F02D41/2454
摘要： PROBLEM TO BE SOLVED: To provide an evaporated fuel treatment device reducing difference between actual air fuel ratio and target air fuel ratio caused by purge of evaporated fuel.
SOLUTION: CPU 52 measures actual air fuel ratio λ1 from detection signal of an air fuel ratio sensor 26. If difference Δλ=/λ1-λ0/ between the target air fuel ratio λ0 and the actual air fuel ratio λ1 is larger than a predetermined range Δλ0, the CPU 52 judges that evaporated fuel quantity purged to an intake air passage 14 is deviated from a target value and that a cause thereof is that the value of reference flow rate Q100 of a purge valve 36 is not correct. The CPU 52 calculates actual reference flow rate Q100 from measured actual air fuel ratio λ1 and rewrites the value of the reference flow rate Q100 corresponding to present intake pressure P0 indicated on a characteristic map by the value of the calculated reference flow rate Q100.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：解决的问题：提供一种蒸发燃料处理装置，其减少由蒸发的燃料吹扫引起的实际空燃比和目标空燃比之间的差异。解决方案：CPU 52根据空燃比传感器26的检测信号测量实际空燃比λ1。如果目标空燃比λ0和实际空燃比λ1之间的差Δλ= /λ1-λ0/大于预定范围Δλ0时，CPU52判断净化到进气通道14的蒸发燃料量偏离目标值，其原因在于净化阀36的基准流量Q100的值不正确。 CPU52从测量的实际空燃比λ1计算实际参考流量Q100，并将与特征图上指示的当前进气压P0相对应的参考流量Q100的值重新计算出参考流量Q100的值。版权所有（C）2007，JPO＆INPIT

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