Control system for an internal combustion engine, internal combustion engine system, and method for controlling internal combustion engine

Patent metadata

Field	Value
Publication number	US-12410760-B2
Application number	US-202318523549-A
Country	US
Kind code	B2
Filing date	Nov 29, 2023
Priority date	Nov 29, 2023
Publication date	Sep 9, 2025
Grant date	Sep 9, 2025

Abstract

A control system for an internal combustion engine includes at least one sensor configured to measure a combustion signal within at least one cylinder of a plurality of cylinders within the internal combustion engine. The combustion signal corresponds to a first combustion cycle. The control system also includes a controller operably connected to the at least one sensor. The controller is configured to receive the combustion signal from the at least one sensor and determine whether the measured combustion signal satisfies at least one condition associated with the internal combustion engine. The at least one condition corresponds to the at least one of engine misfire or delayed combustion. The controller is further configured to, based on the determination, reduce a fueling amount to the at least one cylinder for a predetermined number of combustion cycles following the first combustion cycle.

First claim

What is claimed is:

1. A control system for an internal combustion engine, the control system comprising:
at least one sensor configured to measure a combustion signal within at least one cylinder of a plurality of cylinders within the internal combustion engine, the combustion signal corresponding to a first combustion cycle of a plurality of consecutive combustion cycles; and
a controller operably connected to the at least one sensor, the controller configured to:
receive the combustion signal from the at least one sensor;
determine whether the measured combustion signal satisfies at least one condition associated with the internal combustion engine, the at least one condition corresponding to at least one of engine misfire or delayed combustion; and
based on the determination, reduce a fueling amount to the at least one cylinder for a predetermined number of combustion cycles of the plurality of consecutive combustion cycles the predetermined number of combustion cycles following the first combustion cycle.

2. The control system of claim 1 , wherein the at least one sensor is a pressure sensor.

3. The control system of claim 1 , wherein the combustion signal includes a ratio of pressures between a first pressure and a second pressure.

4. The control system of claim 3 , wherein the first pressure corresponds to a pressure within a first cylinder of the plurality of cylinders and the second pressure corresponds to a pressure within a second cylinder of the plurality of cylinders.

5. The control system of claim 3 , wherein the first pressure corresponds to a first crank angle in a first interval within the first combustion cycle and the second pressure corresponds to a second crank angle in a second interval within the first combustion cycle; and
wherein the first interval is a compression interval and the second interval is an expansion interval.

6. The control system of claim 3 , wherein the first pressure corresponds to a maximum pressure of the at least one cylinder and the second pressure corresponds to a pressure in an intake manifold of the internal combustion engine.

7. The control system of claim 1 , wherein the controller is further configured to adjust a second fueling amount to another cylinder of the plurality of cylinders.

8. The control system of claim 1 , wherein the controller is further configured to adjust a timing of ignition corresponding to the at least one combustion cycle based on the measured combustion signal.

9. The control system of claim 1 , wherein the controller is further configured to adjust a flow of exhaust gas recirculation within the internal combustion engine based on the measured combustion signal.

Assignees

• Cummins Power Generation Inc

Inventors

• Zur Loye Axel O
• Kitchen Andrew Guy
• Sun Jisang

Classifications

• F02D43/04

  using only digital means · CPC title

• F02D1/02

  not restricted to adjustment of injection timing, e.g. varying amount of fuel delivered · CPC title

• F02P5/1502

  using one central computing unit · CPC title

• F02D2200/0406

  Intake manifold pressure · CPC title

• F02D2200/024

  Fluid pressure of lubricating oil or working fluid · CPC title