公开(公告)号：US20170361845A1

公开(公告)日：2017-12-21

申请号：US15185665

申请日：2016-06-17

Applicant: Caterpillar Inc.

Inventor： Jeremy Sharp ,  Suman Goli ,  Mark Rettig

IPC: B60W30/188 ,  B60W10/06 ,  E02F9/20 ,  F15B11/08 ,  B60W10/10 ,  B60W30/182

CPC classification number: B60W30/1882 ,  B60W10/06 ,  B60W10/10 ,  B60W10/103 ,  B60W30/182 ,  B60W2300/17 ,  B60W2510/0638 ,  B60W2510/0657 ,  B60W2510/1005 ,  B60W2520/10 ,  B60W2530/00 ,  B60W2540/10 ,  B60W2710/0644 ,  B60W2710/105 ,  E02F9/2066 ,  E02F9/2079 ,  F15B11/08 ,  Y10T477/679 ,  Y10T477/68

Abstract: A control system for a powertrain system includes an electronic control unit structured to receive ground speed data and load factor data. The electronic control unit determines an engine speed command to an engine and a torque command to a variable-torque transmission based upon an engine speed limit and a torque scale factor that can vary with ground speed and load factor. The commands produce an economy output of the powertrain to reduce fuel consumption.

公开(公告)号：US09689319B2

公开(公告)日：2017-06-27

申请号：US14485056

申请日：2014-09-12

Applicant: Caterpillar Inc.

Inventor： Brian Douglas Hoff ,  Mark Edward Rettig ,  Suman Goli

IPC: F02D11/10 ,  F02D29/02 ,  F02D41/02 ,  B60W10/00 ,  E02F9/20 ,  E02F9/22

CPC classification number: F02D11/105 ,  B60W10/00 ,  E02F9/2066 ,  E02F9/2246 ,  E02F9/2253 ,  E02F9/2289 ,  F02D29/02 ,  F02D41/0215 ,  F02D41/0225 ,  F02D2200/602 ,  F02D2200/606 ,  F02D2250/18

Abstract: A power system is disclosed as having a power source, a transmission configured to receive a torque output from the power source and to drive a traction device, and an operator input device. The power system may also have a controller configured to reference a signal from the operator input device with a map stored in memory to determine a corresponding speed of the power source, and to determine a margin between an actual and a maximum available torque output of the power source at a current speed. The controller may also be configured to selectively adjust a speed of the power source mapped to the maximum displaced position of the operator input device based on the margin, and to selectively adjust fueling of the power source at a current displacement position of the operator input device and operation of the transmission based on the signal and map.