SHIFT CONTROL APPARATUS OF AUTOMATIC TRANSMISSION

• US 20110224878A1
• Filed: 02/04/2011
• Published: 09/15/2011
• Est. Priority Date: 03/12/2010
• Status: Active Grant

• Current Assignee: Suzuki Motor Corporation
• Original Assignee: Suzuki Motor Corporation
• Inventors: Sato, Hiroyuki, Nakamura, Yusuke
• Granted Patent: US 9,169,927 B2
• Time in Patent Office: Days
• US Class Current: 701/56
• CPC Class Codes: F16H 2061/0227 Shift map selection, i.e. methods for controlling selection between different shift maps, e.g. to initiate switch to a map for up-hill driving
• CPC Class Codes: F16H 59/20 Kickdown
• CPC Class Codes: F16H 61/66259 using electrical or electronical sensing or control means

Abstract

There is provided a shift control apparatus of an automatic transmission in a vehicle including a constant speed traveling apparatus, which has a detecting device detecting a surrounding situation of the vehicle and operates according to the detected situation, and an automatic transmission capable of steplessly changing a transmission ratio, the shift control apparatus controlling the automatic transmission according to a shift map for changing the transmission ratio according to a traveling state. The shift control apparatus includes a plurality of shift maps, and a switching and selecting unit selecting and switching to one of the shift maps based on a shift-down request signal or a requested acceleration, which is outputted by a constant speed traveling control device of the constant speed traveling apparatus, according to the situation detected by the detecting device.

Claims

1. A shift control apparatus of an automatic transmission in a vehicle including a constant speed traveling apparatus, which has a detecting device detecting a surrounding situation of the vehicle and operates according to the detected situation, and an automatic transmission capable of steplessly changing a transmission ratio, the shift control apparatus controlling the automatic transmission according to a shift map for changing the transmission ratio according to a traveling state, the shift control apparatus comprising:

a plurality of shift maps; and

a switching and selecting unit selecting and switching to one of the shift maps based on a shift-down request signal or a requested acceleration, which is outputted by a constant speed traveling control device of the constant speed traveling apparatus, according to the situation detected by the detecting device.

2. The shift control apparatus of the automatic transmission according to claim 1, further comprising:

at least shift maps corresponding to normal, acceleration and deceleration as the plurality of shift maps,

wherein the selecting and switching unit selects one of the shift maps based on the shift-down request signal or the requested acceleration from the constant speed traveling control device.

3. The shift control apparatus of the automatic transmission according to claim 2,

wherein in an acceleration shift map out of the plurality of shift maps, an input shaft rotation speed corresponding to an accelerator opening is set entirely to a transmission ratio on a lower side as compared to a normal shift map.

4. The shift control apparatus of the automatic transmission according to claim 2,

wherein in a deceleration shift map out of the plurality of shift maps, a transmission ratio on a highest side is set entirely to a transmission ratio on a lower side as compared to a normal shift map.