CN105377607A - 可行驶距离计算装置 - Google Patents
可行驶距离计算装置 Download PDFInfo
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- CN105377607A CN105377607A CN201480039044.3A CN201480039044A CN105377607A CN 105377607 A CN105377607 A CN 105377607A CN 201480039044 A CN201480039044 A CN 201480039044A CN 105377607 A CN105377607 A CN 105377607A
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- 239000010763 heavy fuel oil Substances 0.000 claims abstract description 90
- 239000000446 fuel Substances 0.000 claims description 78
- 239000002828 fuel tank Substances 0.000 claims description 21
- 238000005259 measurement Methods 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 description 14
- 230000001141 propulsive effect Effects 0.000 description 12
- 238000010586 diagram Methods 0.000 description 7
- 230000000717 retained effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
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Abstract
一种可行驶距离计算装置包括:更新手段(72),用于记录测得剩余燃料量值,并且还按顺序更新所述记录值;计算手段(73),用于基于电池的剩余容量和记录值计算可行驶距离;和显示手段(80),用于至少显示可行驶距离。当引擎(13)被关闭期间内,更新手段(72)保留引擎(13)操作期间内所记录的值作为记录值。
Description
技术领域
本发明涉及可行驶距离计算装置,该装置计算装备有行驶马达和引擎的混合动力车辆的可行驶距离、剩余燃料量等。
背景技术
近年来,装备有行驶马达和引擎的混合动力车辆已得到实际应用。混合动力车辆当中,有一种装备有用于显示从此时起的可行驶距离、剩余燃料量等的设备的混合动力车辆。上述设备的实例,配置为基于用于供应电力至行驶马达的电池的残余容量和燃料箱内燃料的剩余量,计算和显示可行驶距离。(如,例如,专利文献1)。
在先技术文献
专利文献
专利文献1:日本专利申请公开第平11-220803号。
发明内容
发明要解决的课题
燃料箱内燃料的剩余量例如使用燃料量表(传感器表)得到测量。该燃料量表通常基于根据浮子位置(高度)的电阻值的变化,测量剩余燃料量。因此,依据车辆的行驶状态,由燃料量表测得的剩余燃料量和实际剩余燃料量之间的误差可很大。
例如,在不使用燃料而可电动行驶的混合动力车辆的情况下,虽然因为电动操作行驶而无燃料消耗,由燃料量表测得的剩余燃料量可由于燃料振荡而波动。例如,与剩余燃料量的此类波动相关联,可行驶距离的显示可变化,给使用者以不协调感。
本发明是鉴于上述情况而进行的。该发明的目标是提供可行驶距离计算装置,该装置可适当地计算可行驶距离,是为了显示可行驶距离而不给使用者造成任何不协调感。
解决课题的手段
用于解决上述课题,本发明的第一方面是装载于混合动力车辆的可行驶距离计算装置,该混合动力车辆装备有行驶马达、引擎和用于供应电力至行驶马达的电池,所述可行驶距离计算装置包括:一种测量手段,用于基于提供于混合动力车辆内的燃料箱内的燃料的液面的位置,测量剩余燃料量;一种更新手段,用于记录由所述测量手段测得的剩余燃料量,并且还按顺序更新其记录值;一种计算手段,用于基于电池的剩余容量和记录值,计算可行驶距离;以及一种显示手段,用于显示由计算手段计算出的可行驶距离,其中所述更新手段保留引擎操作期间最终更新的值作为当引擎被关闭的期间内的记录值。
本发明的第二方面是根据第一方面的可行驶距离计算装置,其中所述显示手段与可行驶距离一起显示记录值作为剩余燃料量,并且显示最终更新的值作为当引擎被关闭的期间内的剩余燃料量。
本发明的第三方面是根据第一或第二方面的可行驶距离计算装置,进一步包括一种校正手段,用于通过过滤作为由测量手段测得的剩余燃料量的测得剩余燃料量值,计算经校正的剩余燃料量值,其中所述更新手段记录经校正的剩余燃料量值作为剩余燃料量,并且还按顺序更新记录值。
本发明的第四方面是根据第三方面的可行驶距离计算装置,进一步包括一种确定手段,用于确定在引擎被关闭的期间内,测得剩余燃料量值和记录值之间的方差值是否大于预定值,其中如果确定手段确定测得剩余燃料量值和记录值之间的方差值大于预定值,计算手段基于测得剩余燃料量值而非记录值,计算可行驶距离。
本发明的第五方面是根据第四方面的可行驶距离计算装置,其中所述确定手段所使用的预定值包括,当剩余燃料量超过记录值时使用的第一预定值,和当剩余燃料量小于记录值时使用的第二预定值,并且第一预定值是高于第二预定值的值。
本发明的第六方面是根据第四或第五方面的可行驶距离计算装置,进一步包括一种计数手段,用于计量在预定时间段内确定手段确定测得剩余燃料量值和记录值之间的方差值大于预定值的次数,和一种警示手段,用于当计数手段计量的次数达到预定数量时执行警示。
本发明的第七方面是根据第三至第六方面中任一项的可行驶距离计算装置,其中如果由测量手段所测得的测得剩余燃料量值为零,计算手段基于测得剩余燃料量值而非记录值,计算可行驶距离。
发明效果
使用上文所描述的本发明的可行驶距离计算装置,在引擎操作期间所记录的值被作为引擎被关闭的期间内的记录值保留。因而,与燃料的液面振荡相关联的可行驶距离的波动得到抑制。所以,为了在显示手段上显示可行驶距离而不给使用者以不协调感,可行驶距离可被适当地计算。
如果剩余燃料量急剧减少,则无论引擎是何种操作状态,基于测得剩余燃料量而非记录值,可行驶距离得到计算。由此,可行驶距离可得到更加准确的计算和显示。
附图说明
图1是示出根据本发明的混合动力车辆的实例的示意图。
图2是示出根据本发明实施方式的可行驶距离计算装置的框图。
图3是示出基于本发明实施方式的可行驶距离计算装置的可行驶距离计算/显示控制的实例的流程图。
图4是示出测得剩余燃料量值和记录值的变化的实例的图表。
具体实施方式
现在将参照附图对本发明的实施方式进行详细描述。
首先,对根据本实施方式的混合动力车辆的配置实例给出说明。
如图1所示,根据本实施方式的混合动力车辆(以下将简称“车辆”)10装备有前置马达11,后置马达12和引擎13作为行驶的驱动源。前置马达11的驱动力经由前驱传导机构14传导至前轮15。后置马达12的驱动力经由后驱传导机构16传导至后轮17。电池19经由前置(Fr)马达逆变器18连接至前置马达11,并且电池19经由后置(Re)马达逆变器20连接至后置马达12。符合驾驶员踏板操作的电力经由逆变器18、20从电池19供应至马达11、12。
引擎13由从燃料箱24供应的燃料的燃烧所驱动。引擎13经由输出系统25连接至发电机26。发电机26经由发电机逆变器27连接至电池19(和前置马达11)。输出系统25连接至发电机26,并且还经由离合器28连接至前驱传导机构14。
当引擎13依据车辆10的操作状态而驱动时,引擎13的驱动力经由输出系统25首先传导至发电机26。发电机26通过引擎13的驱动力运转,并且适当时,由发电机26产生的电力被供应至前置马达11和电池19。而且,当离合器28依据车辆10的操作状态接合时,引擎13的驱动力经由前驱传导机构14传导至前轮15。
对于根据本实施方式的车辆10,如上文所指出,适当时,依据车辆10的操作状态选取任何一种EV行驶模式,该EV行驶模式的第一行驶模式使用马达11、12作为驱动源,并且第二行驶模式同时使用马达11、12和引擎13作为驱动源。具体而言,所述第二行驶模式包括使用引擎13作为供应至马达11、12的电力的来源的串联行驶模式,和同时通过马达11、12和引擎13的驱动力来驱动车轮15、17的并联行驶模式。
更具体而言,使用EV行驶模式作为第一行驶模式,引擎13的燃料供应被中断。因而,引擎13未被驱动,并且允许车辆10单独通过前置马达11和后置马达12的驱动力来运行。
所述串联行驶模式,即第二行驶模式的形式之一,允许车辆10通过前置马达11和后置马达12的驱动力行驶,EV行驶模式也是如此,但驱动引擎13以供应电力至电池19(和前置马达11)。如此处所见,串联行驶模式利用引擎13作为电力供应源(发电机)。即,使用串联行驶模式,引擎13被驱动,但离合器28处于分离状态。因而,输出系统25和前驱传导机构14之间没有能量传导,结果是引擎13的驱动力经由输出系统25只被传导至发电机26。
使用并联行驶模式,即第二行驶模式的另一形式,同时使用马达11、12和引擎13作为驱动源,使得车辆10运行。当高速行驶等时,基于引擎的行驶比基于马达的行驶更高效,例如,离合器28被接合以传导引擎13的驱动力至前驱传导机构14。换言之,使用并联行驶模式,允许车辆10凭借引擎13之外加上马达11、12的驱动力来运行(可替换地,单独通过引擎13的驱动力)。
车辆10还提供有控制单元30,用于装载于车辆10上的各种设备的集中控制。控制单元30基于来自提供于车辆10内的各种传感器的信号来捉取车辆10的操作状态,并且基于此来综合控制各种设备。例如,还通过控制单元30作出符合车辆10的操作状态的行驶模式的前述选取。
接下来,将描述根据本发明的可行驶距离计算装置50,该可行驶距离计算装置50被装载于上文所描述的混合动力车辆10中。可行驶距离计算装置50还可被称为操作支持显示装置,该操作支持显示装置适当地计算可行驶距离并且将它在显示手段上指示,凭借此来辅助驾驶者的操作。如图2所示,可行驶距离计算装置50装备有燃料量表60作为测量手段,距离计算部70提供于控制单元30内,和组合仪表板80作为显示手段。
燃料量表60被提供于燃料箱24内,用于基于燃料的液面的位置,测量剩余燃料的量(或剩余燃料量)。例如,如图2所示,燃料量表60由浮子61和可变电阻器部分62构成,浮子61漂浮于燃料箱24内的燃料的表面上,可变电阻器部分62的电阻值可依照浮子61的上下运动而变化。燃料量表60将可变电阻器部分62的电阻值转换为剩余燃料量(测得剩余燃料量值)Q(n),并且将其传导至距离计算部70。
距离计算部70基于由燃料量表60测得的剩余燃料量,计算车辆10的可行驶距离。在本实施方式中,计算部70具有校正手段71、更新手段72、计算手段73和确定手段74。
校正手段71过滤由燃料量表60测得的剩余燃料量(测得剩余燃料量值)Q(n),例如,使用高截止滤波器(低通滤波器),以计算经校正的剩余燃料量值Q'(n)。测得剩余燃料量值Q(n)在预定时刻(例如,恒定时间间隔)从燃料量表60传输至距离计算部70,并且每次测得剩余燃料量值Q(n)被传输时,校正手段71计算经校正的剩余燃料量值Q'(n)。
由燃料量表60测得的测得剩余燃料量值Q(n)根据车辆振荡而细微波动。因而,通过过滤,测得剩余燃料量值Q(n)变平稳,以计算经校正的剩余燃料量值Q'(n)。随后将描述,经校正的剩余燃料量值Q'(n)基本上被用作计算车辆10的可行驶距离的基础。过滤本身是现存技术,并且此处将省略对它的说明。
更新手段72记录由校正手段71计算的经校正的剩余燃料量值Q'(n),并且按顺序更新所记录的值K(记录值K)。在引擎13被操作期间内,即,当前述第二行驶模式被选取的情况下,当经校正的剩余燃料量值Q'(n)由校正手段71重新计算时,更新手段72将被记录为记录值K的先前值Q'(n-1)更新至新的经校正的剩余燃料量值Q'(n)。另一方面,在引擎13被关闭的期间内,即在前述第一行驶模式被选取的情况下,更新手段72保留在引擎13操作期间记录的值Q'(x)(最终更新值Q'(x)作为记录值K。通过这个过程,为了在组合仪表板80上显示可行驶距离从而使使用者不会感到不协调感,可行驶距离可被适当地计算。之后将给出细节。
在正常操作中,计算手段73基于电池19(电池19供应电力至作为行驶马达的前置马达11和后置马达12)的剩余容量和由更新手段72记录的记录值K,计算车辆10的可行驶距离。用于计算可行驶距离的方法不限,而是可为现存方法,从而此处将省略对它的说明。
确定手段74确定最新的测得剩余燃料量值Q(n)和记录值K之间的方差是否大于预定值D1。换言之,确定手段74确定最新的测得剩余燃料量值Q(n)和记录值K之间的方差是否等于或小于预定值D1。通过这个步骤,确定手段74确定剩余燃料量是否存在过急剧变化(减少),例如,由于燃料箱24的损坏。即,如果最新的测得剩余燃料量值Q(n)和记录值K之间的方差等于或小于预定值D1,确定剩余燃料量未存在过急剧变化。如果上述方差大于D1,确定剩余燃料量已发生过急剧变化。
在引擎13的操作时间段期间内,记录值K为通过过滤最新的测得剩余燃料量值Q(n)而获取的经校正的剩余燃料量值Q'(n)。在引擎13的关闭时间段,记录值K为在引擎13的操作期间记录的经校正的剩余燃料量值Q'(x)。但是,在正常状态下,例如,燃料箱24未损坏,鉴于引擎13被关闭,该值Q'(x)和最新的经校正的剩余燃料量值Q'(n)大体上一致。
因此,在正常状态下,无论引擎13是何种操作状态,测得剩余燃料量值Q(n)和记录值K之间的方差值,即|Q(n)-K|,等于或小于预定值D1。换言之,预定值D1被设定为一值,该值不被正常状态下不存在燃料箱24的损坏时的方差值(|Q(n)-K|)超出。例如,预定值D1被设定为这样的值,甚至在倾斜路面的行驶中、在车辆停止期间或长时间转弯行驶中,该值将不会被方差值(|Q(n)-K|)超出。
而且,在本实施方式中,确定方差值(|Q(n)-K|),即测得剩余燃料量值Q(n)和记录值K之间差值的绝对值,是否小于或等于预定值D1。但是,依据其中方差值(Q(n)-K)为正的情况和其中方差值(Q(n)-K)为负的情况,预定值D1可为不同的值。例如,可设定第一预定值D1a和第二预定值Dlb,当测得剩余燃料量值Q(n)高于记录值K时使用该第一预定值D1a,当测得剩余燃料量值Q(n)低于记录值K时使用该第二预定值Dlb,并且第一预定值D1a和第二预定值Dlb的绝对值可使之成为不同的值。例如,在本实施方式中,该确定被设计为主要确定是否因为燃料箱24的损坏而有燃料减少。为了这个目的,在设定第一预定值D1a和第二预定值Dlb中,优选地,设定第一预定值D1a从而使之高于第二预定值Dlb。即,优选地,设定第一预定值D1a和第二预定值Dlb从而第一预定值D1a和记录值K之间的差值,即(Dla-K),大于第二预定值Dlb和记录值K之间的差值,即(K-Dlb)。通过这样做,可更早确定燃料减少的存在或不存在,例如,由于燃料箱24的损坏。
在如上文所提到的正常操作中,计算手段73基于电池19的剩余容量和记录值K,计算车辆10的可行驶距离。另一方面,如果由确定手段74确定测得剩余燃料量值Q(n)和记录值K之间的方差值(|Q(n)-K|)高于预定值D1,计算手段73基于最新的测得剩余燃料量值Q(n)而非记录值K,计算可行驶距离。即,如果由确定手段74确定方差值(|Q(n)-K|)高于预定值D1,例如依照燃料箱24可能已发生损坏的判断,基于最新的测得剩余燃料量值Q(n),可行驶距离得到计算。
计数手段75计量次数N,确定手段74在预定时间段内,例如30秒内,确定方差值(|Q(n)-K|)大于预定值D1。当由计数手段75计量的次数N达到预定数量(例如,3)时,警示手段76执行预定警示。例如,作出燃料箱24已发生损坏等的判断,并且执行对此效果的警示。警示的方式不限,并且例如,提供于组合仪表板80内的警示灯可闪烁或照亮。可替换地,可发出警示音。
如上文所述,根据本发明的可行驶距离计算装置50,在第二操作模式的情况下(其中,车辆10的引擎13处于操作中),将记录值K更新至经校正的剩余燃料量值Q'(n);并且在引擎13关闭期间中电动操作行驶的情况下(第一行驶模式),保留引擎13操作期间记录的经校正的剩余燃料量值Q'(x),而不更新记录值K。以这种方式,基于记录值K计算的可行驶距离的波动得到抑制。即,与燃料的液面振荡相关联的可行驶距离的波动得到抑制。所以,可行驶距离可被适当地计算,并且可行驶距离可在组合仪表板80上显示,而使用者不会被给以不协调感。例如,当可行驶距离在组合仪表板80上相对精细地得到指示时,可行驶距离的指示倾向于与液面振荡相关联而明显波动。甚至在该情况下,可能指示可行驶距离到使用者无不协调感的程度。
但是,如果剩余燃料量急剧减少,不管引擎13是何种操作状态,计算手段73适合于基于由燃料量表60已测得的测得剩余燃料量值Q(n)而非记录值K,计算可行驶距离。通过这样做,可行驶距离可得到更准确地指示。甚至当燃料已减少时,例如,因为对燃料箱24作出的损坏,可行驶距离可得到相对准确地指示。
将参照图3和4说明在上文所述的可行驶距离计算装置50中的可行驶距离计算/显示控制的实例。图3是示出可行驶距离计算/显示控制实例的流程图。图4是示出测得剩余燃料量值Q(n)和记录值K的变化的图表。
如图3所示,一旦对可行驶距离的计算/显示控制被启动,燃料箱24内燃料的剩余量,即(测得剩余燃料量值)Q(n)由燃料量表60测得(步骤S1)。随后,测得剩余燃料量值Q(n)由校正手段71过滤,以计算经校正的剩余燃料量值Q'(n)(步骤S2)。随后,确定引擎13是否被操作。如果发动机处于操作中(步骤S3:是),在步骤S4中,更新手段72记录(更新)经校正的剩余燃料量值Q'(n)作为记录值K,此后流程进行至步骤S5。如果引擎13处于关闭时间段(步骤S3:否),记录值K未被记录(更新),可使流程进行至步骤S5。
例如,在图4中从T0到T1的时间段是发动机13处于操作期间的时间段(当第一操作模式被选取时)。在这个时间段内,燃料逐渐减少,并且,藉此,测得剩余燃料量值Q(n)和经校正的剩余燃料量值Q'(n)逐渐减少。如前所述,在这个时间段内,记录值K被按顺序更新至最新经校正的剩余燃料量值Q'(n)。在图4中T1之后的时间段是当引擎13未处于操作中的时间段,在正常状态下(从T1到T2的时间段内),记录值K未得到记录(更新)。
返回图3,在步骤S5中,由确定手段74确定测得剩余燃料量值Q(n)和记录值K之间的方差值(|Q(n)-K|)是否等于或小于预定值D1。即,确定测得剩余燃料量值Q(n)和记录值K之间的方差值(|Q(n)-K|)是否高于预定值D1。如果测得剩余燃料量值Q(n)和记录值K之间的方差等于或小于预定值D1(步骤S5:是),流程进行至步骤S6,其中计算手段73基于记录值K(经校正的剩余燃料量值Q'(n)),计算可行驶距离,并且计算出的可行驶距离被显示在组合仪表板80上。另一方面,如果测得剩余燃料量值Q(n)和记录值K之间的方差值(|Q(n)-K|)高于预定值D1(步骤S5:否),流程进行至步骤S7。流程进行至步骤S7。在步骤S7中,计算手段73基于最新的测得剩余燃料量值Q(n)而非记录值K,计算可行驶距离,并且计算出的可行驶距离被显示在组合仪表板80上。
例如,在图4中T1之后的时间段是引擎13被关闭期间的时间段(当第二操作模式被选取时)。具体而言,从T1到T2的时间段代表正常状态,该状态下,其中测得剩余燃料量值Q(n)和记录值K之间的方差值(|Q(n)-K|)不高于预定值D1。因而,可行驶距离基于记录值K(经校正的剩余燃料量值Q'(x)得到计算,并且显示在组合仪表板80上。在时刻T3、T4、T5和T6,测得剩余燃料量值Q(n)急剧增加或减少,结果是测得剩余燃料量值Q(n)和记录值K之间的方差值(|Q(n)-K|)大于预定值D1。因为这个状态,可行驶距离基于最新的测得剩余燃料量值Q(n)得到计算,并且显示在组合仪表板80上。
如上文所描述,使用根据本发明的可行驶距离计算装置50,在第二操作模式(其中车辆10的引擎13处于操作中)的情况下,记录值K被更新至经校正的剩余燃料量值Q'(n),而在电动操作行驶(第一行驶模式)(其中引擎13被关闭)的情况下,记录值K未被更新,而在引擎13的操作期间所记录的经校正的剩余燃料量值Q'(x)被保留。通过这个过程,基于记录值K计算的可行驶距离的波动得到抑制。即,与燃料的液面振荡相关联的可行驶距离的波动得到抑制。所以,可行驶距离可被适当地计算,并且可行驶距离可被显示在组合仪表板80上,而使用者不会被给以不协调感。
但是,如果剩余燃料量急剧减少,无论引擎13是何种操作状态,可行驶距离基于测得剩余燃料量值Q(n)(已由燃料量表60测得)而非记录值K得到计算。通过这样做,甚至当燃料已减少时,例如因为燃料箱24的损坏,可行驶距离可得到相对准确的计算和显示。
而且,在本实施方式中,如果通过使用燃料量表60的测量,发现测得剩余燃料量值Q(n)在时刻T7为零,不论测得剩余燃料量值Q(n)和记录值K之间的方差值(|Q(n)-K|)的大小,车辆10的可行驶距离基于测得剩余燃料量值Q(n)而非记录值K(经校正的剩余燃料量值Q'(x)得到计算。通过这样做,它们随时间的差值得到抑制,可行驶距离的变化可被更适当地显示。
如果测得剩余燃料量值Q(n)和记录值K之间的方差值(|Q(n)-K|)大于预定值D1(步骤S5:否),可行驶距离在步骤S7中得到显示。随后,在步骤S8中,计数手段75计量在预定时间段内,例如在30秒内,已确定测得剩余燃料量值Q(n)和记录值K之间的方差值大于预定值D1的次数N。在步骤S9中,确定次数N在预定时间内是否达到预定数量(例如,30秒内3次)。在预定时间已过去的时间点上,次数N被重新设定。当此时,次数N已达到预定数量(步骤S9:是),流程进行至步骤S10,其中由警示手段76执行警示。随后,在步骤S11中,处理过程数量被设定为n=n+1,并且流程返回步骤S1以重复一系列处理过程。如果,在步骤S9中,次数N还未达到预定数量(步骤S9:否),流程进行至步骤S11,而不执行警示。
在图4的实例中,例如,在时刻T4至T6,测得剩余燃料量值Q(n)急剧减少,从而测得剩余燃料量值Q(n)和记录值K之间的方差值(|Q(n)-K|)变得大于预定值D1,并且次数N在时刻T4、T5和T6得到计量。在次数N的计量在T4、T5和T6当中每个时刻处,在预定时间内被实行的情况下,向使用者发出燃料箱24的损坏等已发生的警示。
如上文所指出,当测得剩余燃料量值Q(n)和记录值K之间的方差值被判断为大于预定值D1的次数N,在预定时间内已达到预定数量时,向使用者执行警示。通过这个措施,使用者可被适当地告知与燃料箱损坏等相关联的燃料的减少。
虽然上文已经描述本发明的一个实施方式,将会注意本发明绝不限定于前文所述实施方式。
例如,在上述实施方式中,基于燃料箱内燃料的剩余量,显示车辆的可行驶距离的实例已被描述为操作支持显示装置。但是,例如,剩余燃料量本身可与可行驶距离一同显示。
而且,在上述实施方式中,经校正的剩余燃料量值Q'(n)通过校正(过滤)由燃料量表60测得的测得剩余燃料量值Q(n)得到计算。基本上,可行驶距离基于这个经校正的剩余燃料量值Q'(n)得到计算。但是,经校正的剩余燃料量值Q'(n)不必一定得到计算,而可行驶距离可基于测得剩余燃料量值Q(n)得到计算。即,更新手段72可记录由燃料量表60测得的测得剩余燃料量值Q(n),并且可按顺序更新所记录的值K(记录值K)。
具体而言,在引擎13操作时间段内,当测得剩余燃料量值Q(n)由燃料量表60重新测量时,更新手段72更新被记录为记录值K的先前值Q(n-l)至新的测得剩余燃料量值Q(n)。另一方面,当引擎13被关闭的时间段内,更新手段72保留在引擎13的操作期间内所记录的值,即最终更新值Q(x)为记录值K。
甚至在上文所描述的配置中,与燃料的液面振荡相关联的可行驶距离的波动得到抑制。所以,可行驶距离可显示在组合仪表板80上,而使用者不会被给以不协调感。
符号说明
10、混合动力车辆11、前置马达
12、后置马达13、引擎
14、前驱传导机构15、前轮
16、后驱传导机构17、后轮
18、前置马达逆变器19、电池
20、后置马达逆变器24、燃料箱
25、输出系统26、发电机
27、发电机逆变器28、离合器
30、控制单元50、可行驶距离计算装置
60、燃料量表61、浮子
62、可变电阻部分70、距离计算部
71、校正手段72、更新手段
73、计算手段74、确定手段
75、计数手段76、警示手段
80、组合仪表板(显示手段)。
Claims (7)
1.一种装载于混合动力车辆的可行驶距离计算装置,该混合动力车辆装备有行驶马达、引擎和用于供应电力至所述行驶马达的电池,
所述可行驶距离计算装置包括:
测量手段,用于基于提供于所述混合动力车辆内的燃料箱内的燃料的液面的位置,测量剩余燃料量;
更新手段,用于记录由所述测量手段测得的所述剩余燃料量,并且还按顺序更新其记录值;
计算手段,用于基于所述电池的剩余容量和所述记录值计算可行驶距离;以及
显示手段,用于显示由所述计算手段计算出的所述可行驶距离,
其中,所述更新手段保留所述引擎操作期间最终更新的值,作为所述引擎被关闭的期间内的所述记录值。
2.根据权利要求1所述的可行驶距离计算装置,其中,
所述显示手段与所述可行驶距离一起显示所述记录值作为所述剩余燃料量,并且
所述显示手段显示最终更新的所述值,作为当所述引擎被关闭的所述期间内的所述剩余燃料量。
3.根据权利要求1或2所述的可行驶距离计算装置,
进一步包括校正手段,用于通过过滤作为由所述测量手段测得的所述剩余燃料量的测得剩余燃料量值,计算经校正的剩余燃料量值,
其中,所述更新手段记录所述经校正的剩余燃料量值作为所述剩余燃料量,并且还按顺序更新所述记录值。
4.根据权利要求3所述的可行驶距离计算装置,
进一步包括确定手段,用于确定当所述引擎被关闭的所述期间内,所述测得剩余燃料量值和所述记录值之间的方差值是否大于预定值,
其中,如果所述确定手段确定所述测得剩余燃料量值和所述记录值之间的所述方差值大于所述预定值,所述计算手段基于所述测得剩余燃料量值而非所述记录值,计算所述可行驶距离。
5.根据权利要求4所述的可行驶距离计算装置,其中,
所述确定手段所使用的所述预定值包括,当所述剩余燃料量超过所述记录值时所使用的第一预定值和当所述剩余燃料量小于所述记录值时所使用的第二预定值,并且
所述第一预定值是高于所述第二预定值的值。
6.根据权利要求4或5所述的可行驶距离计算装置,进一步包括:
计数手段,用于计数在预定时间段内,所述确定手段确定所述测得剩余燃料量值和所述记录值之间的所述方差值大于所述预定值的次数;以及
警示手段,用于当由所述计数手段计数出的所述次数达到预定数量时,执行警示。
7.根据权利要求3至6中任一项所述的可行驶距离计算装置,其中,
如果由所述测量手段测得的所述测得剩余燃料量值为零,所述计算手段基于所述测得剩余燃料量值而非所述记录值,计算所述可行驶距离。
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