公开(公告)号：JP2008247227A

公开(公告)日：2008-10-16

申请号：JP2007091580

申请日：2007-03-30

Applicant: Toyota Motor Corp ,  トヨタ自動車株式会社

Inventor： YAMAMOTO MASAYA

IPC: B60K6/445 ,  B60K6/52 ,  B60K6/547 ,  B60L11/14 ,  B60L15/20 ,  B60W10/04 ,  B60W10/08 ,  B60W10/10 ,  B60W10/11 ,  B60W10/26 ,  B60W20/00 ,  B60W30/00 ,  F02D29/02

CPC classification number: Y02T10/6239 ,  Y02T10/6265 ,  Y02T10/7077 ,  Y02T10/7275

Abstract: PROBLEM TO BE SOLVED: To change a gear shift step of a transmission suppressing variable speed shock, even when the gear shift step of the transmission cannot be changed, by performing synchronization of rotation speed of a motor by output limitation of a capacitor device. SOLUTION: When carrying out down shifting of the gear shift step of the transmission in the midst of carrying out motoring of the engine by a motor MG 1 by input limitation Win of a battery during accelerator-off, when an excess power ΔP calculated by output limitation Wout of the battery becomes less than a threshold Pref that is the power required for control of revolution speed synchronization, and when a value 1 is set to a flag F, increase adjustment is performed to make a value obtained by adding increase power ΔW to the output limitation Wout become a new output limitation Wout (S130). In the range of increase adjusted output limitation Wout, down shifting of the gear shift step of the transmission is carried out by synchronizing the revolution speed of the motor MG2 to the target revolution speed Nm2* after gear change (S180-S210), while continuing a motoring status of the engine by the motor MG 1. COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：为了改变抑制变速冲击的变速器的换档步骤，即使当变速器的换档步骤不能改变时，通过通过电容器的输出限制来执行电动机的转速同步， 设备。 解决方案：当在加速器关闭期间通过电动机MG1的电动机的输入限制Win进行发动机的发动机中的变速器的换档步骤的下降时，当过量功率ΔP 通过输出限制计算的电池的Wout变得小于用于控制转速同步所需的功率的阈值Pref，并且当值1被设置为标志F时，执行增加调整以使得通过增加增加获得的值 对输出限制Wout的功率ΔW成为新的输出限制Wout（S130）。 在增加调节输出限制范围Wout中，通过使电机MG2的转速与变速后的目标转速Nm2 *同步（S180-S210），同时继续进行变速器的变速级的下降 马达MG 1发动机的驾驶状态。版权所有（C）2009，JPO＆INPIT

公开(公告)号：JP2008247207A

公开(公告)日：2008-10-16

申请号：JP2007091137

申请日：2007-03-30

Applicant: Toyota Motor Corp ,  トヨタ自動車株式会社

Inventor： YAMAMOTO MASAYA

IPC: B60W10/06 ,  B60K6/445 ,  B60K6/448 ,  B60K6/52 ,  B60L11/14 ,  B60W10/08 ,  B60W20/00 ,  F02D29/02

CPC classification number: Y02T10/6239 ,  Y02T10/6265 ,  Y02T10/6286 ,  Y02T10/7077

Abstract: PROBLEM TO BE SOLVED: To perform motoring of an internal combustion engine at stable rotation speed, irrespective of the fuel cut. SOLUTION: When performing motoring of the engine, motoring of the engine is performed by setting a motor torque instruction Tm1* using values k11 and k21 (S140) in supplying fuel as gains k1 and k2 of a feedback term along with setting feedforward term FF using a map (S130) for fuel supply, when not performing fuel cut, and by setting the motor torque instruction Tm1* using values k12 and k22 (S160) when fuel cut as gains k1 and k2 of a feedback term along with setting the feedforward term FF using a map (S150) for fuel cut when performing fuel cut. As a result, motoring of the engine can be performed at stable rotation speed, irrespective of fuel cut. COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：不管燃料切断如何，以稳定的转速进行内燃机的电动运转。

解决方案：当进行发动机的电动运转时，通过使用值k11和k21（S140）设定电动机转矩指令Tm1 *来进行发动机的电动运转，以提供燃料作为反馈项的增益k1和k2以及设定前馈 在不进行燃料切断的情况下，使用映射（S130），在不进行燃料切断的情况下，通过在燃料切断时作为反馈项的增益k1，k2，设定电动机转矩指令Tm1 *，使用值k12，k22（S160） 使用在执行燃料切断时燃料切断的映射（S150）的前馈项FF。 结果，不管燃料切断如何，都能以稳定的转速进行发动机的电动。 版权所有（C）2009，JPO＆INPIT

公开(公告)号：JP2008239074A

公开(公告)日：2008-10-09

申请号：JP2007085270

申请日：2007-03-28

Applicant: Toyota Motor Corp ,  トヨタ自動車株式会社

Inventor： KIMURA AKIHIRO ,  KAMIOKA KIYOSHIRO ,  HASHIMOTO TOSHIYA ,  YAMAMOTO MASAYA ,  TAJIMA YOICHI ,  AOKI TSUYOSHI ,  IKEMOTO NOBUAKI

IPC: B60W10/08 ,  B60K6/44 ,  B60K6/445 ,  B60K6/448 ,  B60K6/52 ,  B60L11/14 ,  B60L15/20 ,  B60W10/06 ,  B60W10/26 ,  B60W20/00 ,  F02N11/04

CPC classification number: Y02T10/623 ,  Y02T10/6239 ,  Y02T10/6243 ,  Y02T10/6265 ,  Y02T10/6286 ,  Y02T10/646 ,  Y02T10/648 ,  Y02T10/7077 ,  Y02T10/7275

Abstract: PROBLEM TO BE SOLVED: To exhibit performance of a battery to improve performance of a vehicle. SOLUTION: In the vehicle, a power generator, an engine, and a driving axle are connected to a sun gear of a planetary gear mechanism, a carrier, and a ring gear, and an electric motor is connected to the driving axle. The vehicle has a battery exchanging power with the power generator and the electronic motor. In the vehicle, when stopping the engine or staring the engine by the power generator, input limit Win of the battery is changed by an excess tolerance Wset (S360-S420). It is controlled such that a required torque is output to the driving axle by a torque input/output from the electric motor and a torque applied to the driving axle from the power generator through the sun gear including a torque based on a change of a rotation speed of an inertial system including the power generator within a range of the input limit Win. Thereby, the engine can be started or stopped by the power generator, and the required torque can be satisfied. As a result, the performance of the battery is exhibited to improve the performance of the vehicle. COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：展示电池的性能以改善车辆的性能。 解决方案：在车辆中，发电机，发动机和驱动轴连接到行星齿轮机构，行星架和齿圈的太阳齿轮，电动机连接到驱动轴 。 车辆具有与发电机和电子电动机的电池交换电力。 在车辆中，当停止发动机或用发电机盯着发动机时，电池的输入限制Win由过大的公差Wset（S360-S420）改变。 被控制为使得通过来自电动机的扭矩输入/输出将驱动轴输出所需的扭矩，并且通过太阳齿轮从发电机施加到驱动轴上的转矩包括基于旋转变化的转矩 包括功率发生器在内的惯性系统的速度在输入限制Win的范围内。 由此，能够通过发电机起动或停止发动机，能够满足要求的转矩。 结果，显示出电池的性能，以提高车辆的性能。 版权所有（C）2009，JPO＆INPIT

公开(公告)号：JP2008222068A

公开(公告)日：2008-09-25

申请号：JP2007063969

申请日：2007-03-13

Applicant: Toyota Motor Corp ,  トヨタ自動車株式会社

Inventor： KIMURA AKIHIRO ,  KAMIOKA KIYOSHIRO ,  HASHIMOTO TOSHIYA ,  OYAMA SHUNSUKE ,  YAMAMOTO MASAYA ,  IKEMOTO NOBUAKI ,  NOMURA MASAKI

IPC: B60W10/06 ,  B60K6/445 ,  B60K6/448 ,  B60K6/52 ,  B60L11/14 ,  B60W10/08 ,  B60W10/26 ,  B60W20/00 ,  F02D29/02

CPC classification number: B60W20/10 ,  B60K1/02 ,  B60K6/365 ,  B60K6/40 ,  B60K6/445 ,  B60K6/448 ,  B60W10/06 ,  B60W10/08 ,  B60W20/00 ,  B60W40/105 ,  B60W2520/10 ,  B60W2710/065 ,  Y02T10/6239 ,  Y02T10/6243 ,  Y02T10/6286 ,  Y10S903/903 ,  Y10S903/93 ,  Y10S903/96 ,  Y10T477/23 ,  Y10T477/30

Abstract: PROBLEM TO BE SOLVED: To improve fuel economy of a vehicle and to secure a chance to learn an idle controlled variable as a controlled variable during idling of an internal combustion engine. SOLUTION: The engine is controlled by setting a predetermined number of revolutions N3 smaller than a predetermined number of revolutions N2 during a travel at a low vehicle speed as a lower-limit number of revolutions Nemin during stop (S410), and setting the lower-limit number of revolutions Nemin as a target number of revolutions Ne* and setting a value 0 as target torque Te* (S500) when idling is requested (S490). Consequently, the fuel economy of the vehicle can be made better during idling of the engine during stop than idling of the engine at the lower-limit number of revolutions Nemin which is set as the predetermined engine number N2 irrelevantly to whether the engine is at stop. COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：为了提高车辆的燃油经济性，并确保在内燃机怠速期间学习作为受控变量的怠速控制变量的机会。 解决方案：通过在停车期间作为下限转数Nemin设定在低车速行驶期间小于预定转数N2的预定转数N3（S410）来控制发动机，并且设定 作为目标转数Ne *的下限旋转数Nemin，并且在请求空转时将值0设定为目标转矩Te *（S500）（S490）。 因此，在停止期间发动机空转时的燃料经济性可以比在发动机处于停止状态时设定为预定发动机数N2的下限转速Nemin处于发动机空转之前更好 。 版权所有（C）2008，JPO＆INPIT

公开(公告)号：JP2008195135A

公开(公告)日：2008-08-28

申请号：JP2007030354

申请日：2007-02-09

Applicant: Toyota Motor Corp ,  トヨタ自動車株式会社

Inventor： YAMAMOTO MASAYA ,  HASHIMOTO TOSHIYA ,  IWASE NORIHIRO

IPC: B60W10/06 ,  B60K6/445 ,  B60K6/448 ,  B60K6/52 ,  B60L11/14 ,  B60W10/08 ,  B60W10/26 ,  B60W20/00 ,  F02D29/02

CPC classification number: Y02T10/6239 ,  Y02T10/6265 ,  Y02T10/6286 ,  Y02T10/7077

Abstract: PROBLEM TO BE SOLVED: To suppress a shock that can occur when demanded drive force required for a drive shaft in an accelerator-off state varies from a positive value to a negative value. SOLUTION: When an output limit Wout of a battery is smaller than a threshold Wref while an accelerator is off in a state in which an engine is operated, torque T* for working that is actual torque to be output to a drive shaft is gradually reduced (S220), while the engine is operated self-sustaindedly until the torque T* becomes within a range of the vicinity of zero (S160), and the engine is brought into fuel cut and engine speed is suddenly reduced when the torque T* reaches the range of the vicinity of zero (S180, S190), and a part of the variation of power due to the fuel cut is compensated by using inertia power caused by the sudden reduction in the engine speed. Thereby, the shock occurs when the torque output to the drive shaft from the positive value to the negative value may be suppressed. COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：为了抑制在加速器断开状态下驱动轴所需的驱动力从正值向负值变化时可能发生的冲击。 解决方案：当在发动机运转的状态下，当加速器关闭时，当电池的输出限制Wout小于阈值Wref时，作为要被输出到驱动轴的实际转矩的作用力矩T * 逐渐减小（S220），而发动机自身运行直到转矩T *变为零附近（S160）为止，发动机进入燃油切断状态，发动机转速急剧下降时 T *达到零附近的范围（S180，S190），并且通过使用由发动机转速的急剧下降引起的惯性力来补偿由燃料切断引起的功率变化的一部分。 因此，可以抑制从正值向负值输出到驱动轴的转矩，从而发生冲击。 版权所有（C）2008，JPO＆INPIT

公开(公告)号：JP2008195134A

公开(公告)日：2008-08-28

申请号：JP2007030353

申请日：2007-02-09

Applicant: Toyota Motor Corp ,  トヨタ自動車株式会社

Inventor： YAMAMOTO MASAYA ,  HASHIMOTO TOSHIYA ,  IWASE NORIHIRO

IPC: B60W10/06 ,  B60K6/445 ,  B60K6/448 ,  B60K6/52 ,  B60L11/14 ,  B60W10/08 ,  B60W10/26 ,  B60W20/00 ,  F02D29/02 ,  F02D41/12

CPC classification number: Y02T10/6239 ,  Y02T10/6265 ,  Y02T10/6286 ,  Y02T10/7077

Abstract: PROBLEM TO BE SOLVED: To suppress a shock that can occur when demanded drive force required for a drive shaft in an accelerator-off state varies from a positive value to a negative value. SOLUTION: When an output limit Wout of a battery is smaller than a threshold Wref while an accelerator is off in a state in which an engine is operated, torque T* for working that is actual torque to be output to a drive shaft is gradually reduced (S200), while the engine is operated self-sustaindedly until a prescribed time elapses after the torque T* becomes lower than a value zero (S180), and the engine is brought into fuel cut when the prescribed time has elapsed (S130). Thereby, the shock which occurs due to a sudden change of the torque to be output to the drive shaft from a positive value to a negative value may be suppressed. COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：为了抑制在加速器断开状态下驱动轴所需的驱动力从正值向负值变化时可能发生的冲击。 解决方案：当在发动机运转的状态下，当加速器关闭时，当电池的输出限制Wout小于阈值Wref时，作为要被输出到驱动轴的实际扭矩的作用力矩T * 逐渐减小（S200），在发动机自身维持运转直到转矩T *变得低于零（S180）经过规定时间后，发动机在经过规定时间后被切断燃油（S200） S130）。 因此，可以抑制由于要从驱动轴输出的转矩的突然变化从正值到负值而发生的冲击。 版权所有（C）2008，JPO＆INPIT

公开(公告)号：JP2007161063A

公开(公告)日：2007-06-28

申请号：JP2005359088

申请日：2005-12-13

Applicant: Toyota Motor Corp ,  トヨタ自動車株式会社

Inventor： YAMANAKA AKIHIRO ,  UECHI KENSUKE ,  YAMAMOTO MASAYA ,  OKASAKA KAZUOMI ,  TAJIMA YOICHI ,  AOKI TSUYOSHI

IPC: B60K6/445 ,  B60K6/448 ,  B60K6/52 ,  B60K6/547 ,  B60L11/14 ,  B60W10/06 ,  B60W10/08 ,  B60W10/10 ,  B60W20/00 ,  F16H59/44 ,  F16H59/46 ,  F16H59/54 ,  F16H61/02 ,  F16H61/10 ,  F16H61/68 ,  F16H61/684 ,  F16H61/686

CPC classification number: Y02T10/6239 ,  Y02T10/6265 ,  Y02T10/6286 ,  Y02T10/7077

Abstract: PROBLEM TO BE SOLVED: To properly change a speed change shift of a transmission, and to restrain excessive rotation of an electric motor in a system having the electric motor for outputting power to a drive shaft via the transmission. SOLUTION: When a request for Hi-Lo speed change is made (S230 and S240), speed change processing for changing speed change shifts of the transmission 60 (S260) is carried out after confirming that the request for Hi-Lo speed change continues for a designated period (S250). Thus, it is avoided that the shift of the transmission 60 is changed by executing the Hi-Lo speed change though an actual speed V is greater than a Hi-Lo speed change line Vlo. Therefore, excessive rotation of the electric motor MG2 caused by executing the Hi-Lo speed change of the transmission 60 though the actual speed V is greater is suppressed, and the speed change shift of the Hi-Lo speed change for the transmission 60 can be executed more suitably. COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：为了适当地改变变速器的变速换档，并且通过变速器来限制具有用于向驱动轴输出动力的电动机的系统中的电动机的过度旋转。 解决方案：当进行Hi-Lo变速的请求（S230和S240）时，在确认Hi-Lo速度的请求之后，执行用于改变变速器60的速度变化换档的变速处理（S260） 变更持续指定期限（S250）。 因此，通过实际速度V大于Hi-Lo变速线Vlo，可以避免变速器60的变速通过执行Hi-Lo变速而改变。 因此，抑制了通过以实际速度V执行变速器60的Hi-Lo速度变化而引起的电动机MG2的过度旋转，并且变速器60的Hi-Lo速度变化的变速档位可以为 执行更合适。 版权所有（C）2007，JPO＆INPIT

公开(公告)号：JP2007131047A

公开(公告)日：2007-05-31

申请号：JP2005323715

申请日：2005-11-08

Applicant: Toyota Motor Corp ,  トヨタ自動車株式会社

Inventor： YAMANAKA AKIHIRO ,  UECHI KENSUKE ,  YAMAMOTO MASAYA ,  TAJIMA YOICHI ,  OKASAKA KAZUOMI ,  AOKI TSUYOSHI

IPC: B60K6/44 ,  B60K6/445 ,  B60K6/448 ,  B60K6/52 ,  B60K6/547 ,  B60K17/04 ,  B60L11/14 ,  B60L15/20 ,  B60W10/06 ,  B60W10/08 ,  B60W10/10 ,  B60W10/26 ,  B60W20/00 ,  F02D29/02

CPC classification number: Y02T10/6286 ,  Y02T10/7077 ,  Y02T10/7275

Abstract: PROBLEM TO BE SOLVED: To provide a hybrid vehicle, a driving device and a hybrid control method for suppressing shock in shift. SOLUTION: When a hybrid car is traveling in a coast-down state in which a driver turns off an accelerator, input restriction is set to tighten restriction in order to make a power to be input to a battery 50 smaller than that for normal driving, and an engine 22 or motors MG1 and MG2 are controlled so that a requested required torque can be output to a ring gear shaft 32a being a driving shaft within the range of the torque restriction of the motors MG1 and MG2 based on input restriction, and when the state of the gear of a transmission 60 is switched in the coast-down state, the input restriction of the battery 50 is returned to that for normal driving, and the state of the gear of the transmission 60 is switched, and the engine 22 or the motors MG1 and MG2 or the transmission 60 are controlled so that the required torque can be output to the ring gear shaft 32a within the range of the torque restriction of the motor MG2 for properly switching the state of the gear of the transmission 60, and within the range of the torque restriction of the motors MG1 and MG2 based on the input restriction. COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：提供一种混合动力车辆，驱动装置和用于抑制换档中的冲击的混合控制方法。 解决方案：当混合动力汽车在驾驶员关闭加速器的滑行状态下行驶时，输入限制被设定为收紧限制，以便将电力输入到电池50的电力小于 控制发动机22或电动机MG1，MG2，使得在电动机MG1，MG2的转矩限制范围内，作为驱动轴的齿圈轴32a能够根据输入限制输出要求的所需转矩 并且当变速器60的齿轮的状态在滑行状态下切换时，电池50的输入限制返回到正常驱动的输入限制，并且变速器60的齿轮的状态被切换，并且 发动机22或电动机MG1和MG2或变速器60被控制，使得在马达MG2的扭矩限制的范围内可以将所需扭矩输出到齿圈轴32a，以适当地切换电动机MG2的齿轮的状态 transmiss 离子60，并且在电动机MG1和MG2的扭矩限制的范围内，基于输入限制。 版权所有（C）2007，JPO＆INPIT

公开(公告)号：JP2007106236A

公开(公告)日：2007-04-26

申请号：JP2005298660

申请日：2005-10-13

Applicant: Toyota Motor Corp ,  トヨタ自動車株式会社

Inventor： YAMAMOTO MASAYA

IPC: B60W20/00 ,  B60K6/445 ,  B60K6/448 ,  B60K6/52 ,  B60K6/54 ,  B60L11/14 ,  B60W10/06 ,  B60W10/08 ,  B60W10/10 ,  B60W10/26 ,  F02D29/00 ,  F02D29/02

CPC classification number: Y02T10/6239 ,  Y02T10/6265 ,  Y02T10/6286 ,  Y02T10/7077

Abstract: PROBLEM TO BE SOLVED: To suppress the deterioration of a driving force when changing the rotational frequency of an internal combustion engine while a vehicle is traveling by a driving force based on a request driving force. SOLUTION: When changing the rotational frequency of an engine by a motor MG1 according to down shift by an operator while a vehicle is traveling by a driving force based on a request torque Tr* (S140), the expanded correction of the input/output limitation of a battery 50 is performed until the change of the rotational frequency of the engine is completed (S230), or until a predetermined time t passes after down-shift (S240), and the torque limitation of a motor MG2 is calculated by using the corrected input/output limitation (S170), and a torque command Tm2* of the motor MG2 is limited with the calculated torque limitation (S180). COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：为了抑制在车辆通过基于请求驱动力的驱动力行驶期间改变内燃机的转速时的驱动力的劣化。 解决方案：当车辆通过基于请求转矩Tr *的驱动力行驶时，根据操作者的下移来改变发动机的发动机的转速时（S140），扩大了输入的校正 执行电池50的输出限制，直到发动机的转动频率的变化完成（S230），或直到下降后的规定时间t（S240）为止，并且计算出电动机MG2的转矩限制 通过使用校正的输入/输出限制（S170），并且通过计算的转矩限制来限制电动机MG2的转矩指令Tm2 *（S180）。 版权所有（C）2007，JPO＆INPIT

公开(公告)号：JP2007106177A

公开(公告)日：2007-04-26

申请号：JP2005296839

申请日：2005-10-11

Applicant: Toyota Motor Corp ,  トヨタ自動車株式会社

Inventor： YAMANAKA AKIHIRO ,  UECHI KENSUKE ,  YAMAMOTO MASAYA ,  OKASAKA KAZUOMI ,  TAJIMA YOICHI ,  AOKI TSUYOSHI

IPC: B60K6/44 ,  B60K6/445 ,  B60K6/448 ,  B60K6/52 ,  B60K6/547 ,  B60L11/14 ,  B60W10/00 ,  B60W10/04 ,  B60W10/06 ,  B60W10/08 ,  B60W10/10 ,  B60W10/11 ,  B60W10/115 ,  B60W10/18 ,  B60W10/24 ,  B60W10/26 ,  B60W10/30 ,  B60W20/00 ,  F02D29/00 ,  F02D29/02 ,  F16H59/74 ,  F16H61/04 ,  F16H61/06 ,  F16H61/68 ,  F16H61/684 ,  F16H61/686 ,  F16H63/40 ,  F16H63/50

CPC classification number: Y02T10/6239 ,  Y02T10/6265 ,  Y02T10/6286 ,  Y02T10/7077

Abstract: PROBLEM TO BE SOLVED: To smoothly perform downshift by securing electric power required for synchronization of rotation speed of a second motor when the downshift of a transmission is required during motoring an engine with a first motor, in a vehicle where the first motor, the engine, and a driving shaft are connected to the sun gear of a planet gear, a carrier, and a ring gear, respectively, and the second motor is connected to the driving shaft via the transmission. SOLUTION: When the downshift is required during motoring the engine with the first motor, the engine is shifted from the motoring state to an autonomous operation state (S410) when consumable electric power Pm2* of the second motor obtained by subtracting power consumption Pm1 of the first motor and auxiliary machine electric power Pa from output limit Wout of a battery for exchanging electric power with two motors is less than a threshold α and electric power obtained by subtracting the auxiliary machine electric power Pa from the output limit Wout is the threshold α or more (S340 and S370). In this state, positive torque is outputted from the second motor, and the downshift is performed synchronously with the rotation speed (S440). COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：为了在使用第一电动机的发动机中驱动发动机时需要固定变速器的换档时，通过确保第二电动机的转速同步所需的电力来平稳地执行降档，在第一电动机 ，发动机和驱动轴分别连接到行星齿轮，行星架和齿圈的太阳齿轮，并且第二电动机经由变速器连接到驱动轴。

解决方案：当用第一马达驱动发动机时需要降档时，当通过减去功率消耗获得第二马达的消耗电力Pm2 *时，发动机从运转状态转移到自主运行状态（S410） 第一电动机的Pm1和来自输出限制的辅机电功率Pa与用于与两个电动机交换电力的电池的Wout小于阈值α，并且通过从输出限制Wout减去辅机电功率Pa获得的功率为 阈值α以上（S340和S370）。 在这种状态下，从第二马达输出正扭矩，与转速同步地进行降档（S440）。 版权所有（C）2007，JPO＆INPIT