Regenerating an engine exhaust gas particulate filter for hybrid electric vehicle

A particulate filter, engine technology, applied to the layout of multiple different prime movers, engine components, combustion engines, etc. of general power plants, can solve problems such as poor engine efficiency and performance, DPF damage, and extra exhaust back pressure

Inactive Publication Date: 2009-02-04
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Otherwise, a flooded DPF can cause excess exhaust back pressure, poorer engine efficiency and performance, or cause damage to the DPF itself

Method used

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  • Regenerating an engine exhaust gas particulate filter for hybrid electric vehicle
  • Regenerating an engine exhaust gas particulate filter for hybrid electric vehicle
  • Regenerating an engine exhaust gas particulate filter for hybrid electric vehicle

Examples

Experimental program
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Embodiment Construction

[0018] Figure 1 shows a HEV powertrain 10 comprising an internal combustion engine 12, such as a diesel engine, and an electric machine 14, preferably a starter-generator, capable of turning the engine and generating electrical power during engine cranking. A battery 16 electrically connected to the electric machine 14 stores energy generated by the electric machine and transfers energy to the electric machine to turn the engine.

[0019] The particulate filter 18 includes an inlet 20 connected to an exhaust manifold 22 of the engine 12 and an outlet 24 through which exhaust gas from the engine exits the particulate filter 18 and flows into the atmosphere. When powertrain 10 includes a diesel engine, particulate filter 18 is referred to as a diesel particulate filter (DPF).

[0020] The input 28 of the electric machine 14 is drivingly connected to the engine crankshaft 26 through a connector 30 . The output 32 of the electric machine 14 is drivingly connected through a propel...

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PUM

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Abstract

The invention relates to an engine exhaust gas particulate filter in a hybrid electric vehicle. In a powertrain that includes an engine having a filter for removing particulate matter from engine exhaust gas, and an electric machine driveably connected to the engine, a method for controlling temperature of the filter including operating the engine to produce a magnitude of positive crankshaft power for driving the vehicle, increasing the temperature of the engine exhaust gas by operating the electric machine to increase load on the engine, and regenerating the particulate filter by passing engine exhaust gas at the increased temperature through the particulate filter.

Description

technical field [0001] The present invention generally relates to an aftertreatment system having a particulate filter for treating exhaust gas from an engine in a hybrid electric vehicle. Background technique [0002] A hybrid electric vehicle (HEV), which relates to a motor vehicle, includes a drivetrain that transfers rotational power from multiple power sources to wheel loads at the vehicle's drive wheels. One power source is an internal combustion engine, such as a diesel engine with an engine exhaust aftertreatment system equipped with a diesel particulate filter (DPF). A suitable "hybrid electric" configuration is any configuration in which there is an electric machine (with drive and generating capabilities) whose torque output is directly or indirectly connected to the torque output of an internal combustion (IC) engine. [0003] A Diesel Particulate Filter (DPF) removes unwanted particulate matter from diesel engine exhaust by physical filtration. Diesel particul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K6/22B60K6/24B60K13/04F01N3/021
CPCY02T10/54B60W10/06F02D41/029B60W2710/105F02D2041/026B60Y2300/476Y02T10/26F02D41/0245B60L2240/486B60W10/08B60W30/188Y02T10/12Y02T10/40B01D46/4263B60K6/22F01N3/023B01D46/84
Inventor 迪帕克·阿丝瓦尼马休·A·博伊斯奇伊哈勃·S·索里曼安德鲁·J·西尔韦里法扎尔·U·塞德马克·S·山崎
Owner FORD GLOBAL TECH LLC
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