Invention Grant
- Patent Title: Vehicle travel control apparatus
-
Application No.: US14405420Application Date: 2013-05-29
-
Publication No.: US09969391B2Publication Date: 2018-05-15
- Inventor: Tomonori Kawakami , Atsushi Yokoyama , Taisetsu Tanimichi , Takaharu Abe
- Applicant: Hitachi Automotive Systems, Ltd.
- Applicant Address: JP Hitachinaka-shi
- Assignee: Hitachi Automotive Systems, Ltd.
- Current Assignee: Hitachi Automotive Systems, Ltd.
- Current Assignee Address: JP Hitachinaka-shi
- Agency: Crowell & Moring LLP
- Priority: JP2012-130228 20120607
- International Application: PCT/JP2013/064825 WO 20130529
- International Announcement: WO2013/183502 WO 20131212
- Main IPC: B60W30/14
- IPC: B60W30/14 ; B60W20/00 ; B60K6/485 ; B60W10/08 ; F02D29/02 ; F02D17/04 ; B60K6/547 ; B60W10/11 ; B60W30/18 ; B60W20/30 ; B60K6/54 ; B60W10/06 ; B60W20/12 ; B60K31/00

Abstract:
A vehicle travel control apparatus is provided that is capable of improving fuel economy by exerting control so as to attain a specified speed without starting the engine during acceleration, and by increasing the regenerative energy recovery amount during deceleration, during the travel control. A vehicle travel control apparatus (100) to control the vehicle speed is mounted in a hybrid vehicle containing an engine (107) and a motor (112) as power sources, and includes: a target vehicle computing unit (200) that calculates a target vehicle speed; an acceleration command value calculation unit (201) that calculates an acceleration command value (211) based on a target vehicle speed; an acceleration limit processing unit (203) that calculates a post-limit acceleration command value (214) that limits the acceleration command value (211) by utilizing a specified upper-limit value and a specified lower-limit value; a torque command value computing unit (205) that calculates a torque command value from the post-limit acceleration command value (214); and a speed-change command value computing unit (206) that determines whether a down-shift is required or not based on the acceleration command value (211) and an upper-limit torque or a lower-limit torque of the motor, and calculates a speed-change command value (215).
Public/Granted literature
- US20150134168A1 Vehicle Travel Control Apparatus Public/Granted day:2015-05-14
Information query