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System and method for warming exhaust device of engine exhaust system

An engine system and engine technology, applied in the direction of exhaust devices, engine components, combustion engines, etc., can solve the problems of high exhaust temperature, difficult to achieve, low exhaust temperature, etc., and achieve the effect of reducing emissions

Pending Publication Date: 2021-08-24
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Aftertreatment devices may be heated via exhaust; however, at lighter engine loads and lower engine speeds, exhaust temperatures may be lower than desired due at least in part to lean burn within diesel engines
It may be desirable to increase exhaust gas temperatures at low engine loads, but higher exhaust temperatures may be difficult to achieve without significantly increasing engine fuel consumption

Method used

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  • System and method for warming exhaust device of engine exhaust system
  • System and method for warming exhaust device of engine exhaust system
  • System and method for warming exhaust device of engine exhaust system

Examples

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Embodiment Construction

[0012] This specification relates to the operation of a diesel engine including an exhaust aftertreatment device. The engine can be Figure 1 to Figure 2B type shown in . The engine can be as image 3 and Figure 4 The operations shown in the sequence. Figure 1 to Figure 2B The engine can be based on Figure 5 and Figure 6 method of operation to increase exhaust temperature and reduce engine fuel consumption.

[0013] refer to figure 1 , an internal combustion engine 10 (comprising a plurality of cylinders, figure 1 One of the cylinders shown in ) is controlled by the electronic engine controller 12 . Controller 12 from figure 1 The various sensors receive signals and adopt figure 1 The various actuators are used to adjust engine operation based on the signals received and instructions stored on the controller's memory.

[0014] Engine 10 includes combustion chamber 30 and cylinder walls 32 with piston 36 positioned therein and connected to crankshaft 40 . The cy...

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PUM

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Abstract

The invention provides a system and a method for warming an exhaust device of an engine exhaust system. Methods and systems for increasing exhaust gas temperatures of an engine are described. In one example, engine exhaust gas temperatures may be increased via deactivating cylinders and flowing exhaust gases through deactivated cylinder. Engine pumping losses may be reduced via the exhaust gases that flow through the deactivated cylinder so as to reduce engine fuel consumption while heating an exhaust gas after treatment device.

Description

technical field [0001] The present disclosure generally relates to engine exhaust systems. Background technique [0002] Diesel engines may include exhaust aftertreatment devices for treating exhaust from the engine. The aftertreatment device may operate at a desired efficiency when the temperature of the aftertreatment device is greater than a threshold temperature (eg, catalyst light-off temperature). Aftertreatment devices may be heated via exhaust; however, at lighter engine loads and lower engine speeds, exhaust temperatures may be lower than desired due at least in part to lean burn within diesel engines. It may be desirable to increase exhaust temperature at low engine loads, but higher exhaust temperatures may be difficult to achieve without significantly increasing engine fuel consumption. Accordingly, it may be desirable to provide a way to warm an exhaust aftertreatment device in a manner that does not significantly increase fuel consumption of the engine. Con...

Claims

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Application Information

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IPC IPC(8): F02D13/02F02D41/00F02D41/02F02D41/38
CPCF02D13/02F02D41/0087F02D41/0002F02D41/0245F02D41/38F02D2041/389F01L13/0005F01L2013/001F01L2013/111F01L2201/00F01L2800/02F01N2430/02F01N3/103F01N3/2066F01N3/021F01N2560/026F02D13/06F02D13/0226F02D41/0007F02D2041/001F02D2041/0012F02D9/08F01N3/2006
Inventor 埃里克·马修·库尔茨贾森·布莱恩·马茨
Owner FORD GLOBAL TECH LLC
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