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Controlling IMAP of engine to facilitate regeneration process

A technology for control process, regeneration process, applied in the direction of engine components, combustion engines, engine control, etc.

Pending Publication Date: 2022-05-03
CATERPILLAR INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] While the '364 patent is concerned with providing techniques for controlling engine exhaust temperature using a VGT and an air intake throttle, the '364 patent only discloses controlling the air intake throttle based on filter inlet exhaust temperature

Method used

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  • Controlling IMAP of engine to facilitate regeneration process
  • Controlling IMAP of engine to facilitate regeneration process
  • Controlling IMAP of engine to facilitate regeneration process

Examples

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Embodiment Construction

[0013] The present disclosure relates to a controller, such as an engine control module (ECM), that controls the engine's VGT and / or ITV to control the engine's IMAP and thereby exhaust (eg, exhaust gas produced by the engine) temperature to facilitate regeneration process. As described herein, a controller, VGT and / or ITV is of general applicability to any machine utilizing such a controller, VGT and / or throttle. The term "machine" may refer to any machine that performs operations associated with an industry such as, for example, mining, construction, agriculture, transportation, or any other industry. As some examples, the machine may be a vehicle, off-road truck, backhoe loader, cold planer, wheel loader, compactor, feller buncher, forestry machine, forwarder, harvester, excavator, industrial loader, Steering arm loaders, material handlers, graders, pipelayers, road reclaimers, skid steers, skidders, telehandlers, tractors, bulldozers, tractor scrapers or other surface equ...

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PUM

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Abstract

The controller may determine that a regeneration process associated with an engine of the machine is activated. The controller may obtain information about a speed of the engine, information about a load of the engine, and information about a fuel ratio of the engine based on determining that the regeneration process is activated. The controller may select one of a plurality of control processes to control an intake manifold absolute pressure (IMAP) of the engine based on information about a speed of the engine, information about a load of the engine, and information about a fuel ratio of the engine to facilitate a regeneration process. The controller may cause adjustment of one or more components of a variable geometry turbocharger (VGT) of the engine and an intake throttle valve (ITV) of the engine according to the selected control process.

Description

technical field [0001] The present disclosure generally relates to controlling intake manifold absolute pressure (IMAP) of an engine and, for example, to controlling IMAP of an engine using a variable geometry turbocharger (VGT) and an intake throttle valve (ITV). Background technique [0002] Internal combustion engines, such as diesel engines, produce exhaust gases containing various pollutants. These pollutants can include, for example, particulate matter (e.g., soot), nitrogen oxides (NO x ) and / or sulfur compounds. In some cases, the engine may include a particulate collection device and / or an exhaust aftertreatment device to remove and / or convert particulate matter and / or other pollutants in the exhaust gas. Particulate collection devices and / or exhaust aftertreatment devices may use heat from exhaust gas in conjunction with an oxidation catalyst (eg, a diesel oxidation catalyst (DOC)) to facilitate removal and / or conversion of particulate matter and / or other polluta...

Claims

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Application Information

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IPC IPC(8): F02D43/00F02D23/00F02D9/02F01N9/00
CPCF02D43/00F02D23/00F02D9/02F01N9/002F02D2009/0228F02B37/24F02D41/0007F02D41/0002F02D41/024F02D41/0055F02D41/027F02D41/10F02D41/1446F02D2200/0406F02D2200/101F02D2200/0614F02D41/045F02D2200/1002F01N3/023F01N3/0885
Inventor R·奈尔S·沃尔J·穆蒂
Owner CATERPILLAR INC
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