Integrated regeneration and engine controls

• US 20060282213A1
• Filed: 06/08/2005
• Published: 12/14/2006
• Est. Priority Date: 06/08/2005
• Status: Active Grant

• Current Assignee: Caterpillar Incorporated
• Original Assignee: Caterpillar Incorporated
• Inventors: Wilson, Arvil Duane, Withrow, Michael Paul, Graham, Ryan Edward, Grunow, Timothy William II, Knitt, Andrew Alfred
• Granted Patent: US 7,623,953 B2
• Time in Patent Office: Days
• US Class Current: 701/115
• CPC Class Codes: B01D 53/9495 Controlling the catalytic process
• CPC Class Codes: F01N 2590/08 for heavy duty applications, e.g. trucks, buses, tractors, locomotives
• CPC Class Codes: F01N 9/00 Electrical control of exhaust gas treating apparatus monitoring or diagnostic devices for exhaust-gas treatment apparatus F01N11/00; conjoint electrical control of two or more combustion engine functions F02D43/00
• CPC Class Codes: F02D 41/029 the exhaust gas treating apparatus being a particulate filter
• CPC Class Codes: F02D 41/266 the computer being backed-up or assisted by another circuit, e.g. analogue
• CPC Class Codes: Y02T 10/40 Engine management systems

Abstract

A method to integrate engine and exhaust aftertreatment control may include connecting an engine controller to an aftertreatment controller using a common data link protocol to provide a bidirectional data flow between the engine controller and the aftertreatment controller. The method may also include connecting the engine controller to one or more engine components. The method may also include connecting the aftertreatment controller to one or more aftertreatment components.

Claims

1. A method to integrate engine and exhaust aftertreatment control, comprising:

connecting an engine controller to an aftertreatment controller using a common data link protocol to provide a bidirectional data flow between the engine controller and the aftertreatment controller;

connecting the engine controller to one or more engine components; and

connecting the aftertreatment controller to one or more aftertreatment components.

2. The method of claim 1, further including connecting the engine controller and the aftertreatment controller to a common service connector shared by the engine controller and the aftertreatment controller.

3. The method of claim 1, further including connecting the engine controller to a first service connector and connecting the aftertreatment controller to a second service connector separate from the first service connector.

4. The method of claim 1, further including connecting the engine controller to engine components including at least one of an engine sensor and an engine actuator and connecting the aftertreatment controller to aftertreatment components including at least one of an aftertreatment sensor and an aftertreatment actuator.

5. The method of claim 4, wherein the engine controller and the aftertreatment controller operably connect to the engine components and aftertreatment components, respectively, via at least one of pulse width modulation, data link protocols, current signals and analog signals.

6. The method of claim 1, wherein the common data link protocol includes at least one of J1939 and SAE J1587 data link protocols.

7. The method of claim 1, wherein the bidirectional data flow includes one or more engine operating conditions and one or more aftertreatment diagnostic conditions.

8. The method of claim 7, wherein the one or more engine operating conditions include at least one of mass flow rate, an exhaust temperature, engine speed and engine torque.

9. The method of claim 7, wherein the one or more aftertreatment diagnostic conditions include at least one of a particulate matter accumulation level in an exhaust element and a pressure differential across the exhaust element.

10. An exhaust aftertreatment control system comprising:

an engine controller;

an aftertreatment controller connected to the engine controller using a common data link protocol to provide a bidirectional data flow between the engine controller and the aftertreatment controller;

one or more engine components operably connected to the engine controller; and

one or more aftertreatment components operably connected to the aftertreatment controller.

11. The control system of claim 10, wherein the engine controller and the aftertreatment controller are operably connected to a common service connector shared by the engine controller and the aftertreatment controller.

12. The control system of claim 10, wherein the engine controller is connected to a first service connector and the aftertreatment controller is connected to a second service connector separate from the first service connector.

13. The control system of claim 10, wherein the one or more engine components include at least one of an engine sensor and an engine actuator, and the one or more aftertreatment components include at least one of an aftertreatment sensor and an aftertreatment actuator.

14. The control system of claim 10, wherein the engine controller and the aftertreatment controller operably connect to the engine components and aftertreatment components, respectively, via at least one of pulse width modulation, data link protocols, current signals and analog signals.

15. The control system of claim 10 wherein the common data link protocol includes at least one of J1939 and SAE J1587 data link protocols.

16. The control system of claim 10, wherein the bidirectional data flow includes one or more engine operating conditions and one or more aftertreatment diagnostic conditions.

17. The control system of claim 16, wherein the one or more engine operating conditions include at least one of a mass flow rate, an exhaust temperature, engine speed and engine torque.

18. The control system of claim 16, wherein the one or more aftertreatment diagnostic conditions include at least one of a particulate matter accumulation level in an exhaust element and a pressure differential across the exhaust element.

19. A work machine comprising:

a frame;

an engine operably connected to the frame;

an aftertreatment controller;

an engine controller connected to the aftertreatment controller using a common data link protocol to provide bidirectional data flow between the engine controller and the aftertreatment controller;

one or more engine components connected to the engine controller; and

one or more aftertreatment components connected to the aftertreatment controller.

20. The work machine of claim 19, wherein the engine controller and the aftertreatment controller connect to a common service connector shared by the engine controller and the aftertreatment controller.

21. The work machine of claim 19, wherein the engine controller is connected to a first service connector and the aftertreatment controller is connected to a second service connector separate from the first service connector.

22. The work machine of claim 21, wherein the common data link protocol includes at least one of J1939 and SAE J1587 data link protocols.

23. The work machine of claim 21, wherein the bidirectional flow includes one or more engine operating conditions and one or more aftertreatment diagnostic conditions.