Systems and methods for adaptive acceleration based speed control

Patent metadata

Field	Value
Publication number	US-2017191432-A1
Application number	US-201715462384-A
Country	US
Kind code	A1
Filing date	Mar 17, 2017
Priority date	Sep 19, 2014
Publication date	Jul 6, 2017
Grant date	—

Abstract

A method of controlling speed of an internal combustion engine is disclosed. The method includes receiving a load parameter input. The method also includes determining a requested speed demand and detecting a change in load based on the load parameter input. The method also includes determining a modified speed demand based on the detected change in load, and modifying the requested speed demand to the modified speed demand.

First claim

What is claimed is:

1 . A method, comprising:
receiving a load parameter input; determining a requested speed demand; detecting a change in load based on the load parameter input; determining a modified speed demand based on the detected change in load; and modifying the requested speed demand to the modified speed demand.

2 . The method of claim 1 , wherein the modification to the speed demand is proportional to the change in load.

3 . The method of claim 1 , wherein detecting the change in load is based on receiving an operator input corresponding with an unloading process.

4 . The method of claim 1 , further comprising receiving a compressor inlet density input, wherein determining the modified speed demand is further based on the compressor inlet density input.

5 . The method of claim 1 , further comprising receiving a coolant temperature input, wherein determining the modified speed demand is further based on the coolant temperature input.

6 . The method of claim 1 , further comprising determining an operating mode, and wherein determining the modified speed demand is further based on the operating mode.

7 . The method of claim 6 , wherein the operating mode is selected by an operator via an operator input.

8 . The method of claim 6 , further comprising receiving vehicle parameter inputs and determining the operating mode based on the vehicle parameter inputs.

9 . An apparatus, comprising:
an internal combustion engine; a transmission; and a controller communicably coupled to the internal combustion engine and to the transmission, the controller structured to:
receive a load parameter input;
determine a requested speed demand;
detect a change in load based on the load parameter input
determine a modified speed demand based on the detected change in load; and
modify the requested speed demand to the modified speed demand.

10 . The apparatus of claim 9 , wherein the modification to the speed demand is proportional to the change in load.

11 . The apparatus of claim 9 , wherein detecting the change in load is based on receiving an operator input corresponding with an unloading process.

12 . The apparatus of claim 9 , wherein the controller is further structured to receive a compressor inlet density input, and wherein the controller is structured to determine the modified speed demand further based on the compressor inlet density input.

13 . The apparatus of claim 9 , wherein the controller is further structured to receive a coolant temperature input, and wherein the controller is structured to determine the modified speed demand further based on the coolant temperature input.

14 . The apparatus of claim 9 , wherein the controller is further structured to receive an operating mode input, and wherein the controller is structured to determine the modified speed demand further based on the operating mode input.

15 . The apparatus of claim 14 , wherein the operating mode is selected by an operator via an operator input.

16 . The apparatus of claim 14 , wherein the controller is further structured to receive vehicle parameter inputs and to determine the operating mode based on the vehicle parameter inputs.

17 . An apparatus, comprising:
an accelerator pedal based speed control module structured to determine a requested speed demand; an unloading condition detection module structured to receive a load parameter input and detect a change in load based on the load parameter input; and a delta accelerator based speed control module structured to determine a modified speed demand based on the requested speed demand and detected change in load; wherein the accelerator pedal based speed control module is further structured to modify the requested speed demand to the determined modified speed demand.

18 . The apparatus of claim 17 , wherein the modification to the speed demand is proportional to the change in load.

19 . The apparatus of claim 17 , wherein the unloading condition detection module is further structured to receive an operator input corresponding to the unloading process, and wherein the unloading condition detection module is structured to detect the change in load further based on the operator input.

20 . The apparatus of claim 17 , wherein the delta accelerator based speed control module is further structured to receive a compressor inlet density input, and wherein the delta accelerator based speed control module is structured to determine the modified speed demand further based on the compressor inlet density input.

Assignees

• Cummins Inc

Inventors

• Zhang Roger S
• Wang Pan
• Wang Joey

Classifications

• B60W50/082

  Selecting or switching between different modes of propelling · CPC title

• B60W30/1884

  Avoiding stall or overspeed of the engine · CPC title

• B60Y2200/142

  Heavy duty trucks · CPC title

• B60Y2200/412

  Excavators · CPC title

• B60W2530/10

  Weight · CPC title