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Method and system for improved stopping and starting of a turbocharged engine

An engine system and engine stop technology, applied in the direction of engine start, engine motor start, engine components, etc., can solve the problems of poor operation of processing components, increase engine emission driver dissatisfaction, etc., to achieve improved engine start, Improved driving experience and reduced engine emissions

Active Publication Date: 2017-03-01
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, each time the engine is automatically stopped and started, the potential for increased engine emissions and driver dissatisfaction increases
For example, if the engine spins longer than desired during engine stop, the engine may pump air into the exhaust system so that exhaust aftertreatment components may perform poorly

Method used

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  • Method and system for improved stopping and starting of a turbocharged engine
  • Method and system for improved stopping and starting of a turbocharged engine
  • Method and system for improved stopping and starting of a turbocharged engine

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Embodiment Construction

[0024] The present invention relates to stopping and starting turbocharged engines. In one example, the turbocharged engine may be stopped in a manner that reduces the amount of oxygen provided to the exhaust aftertreatment device. In another example, the turbocharged engine is started in a manner that may improve the driving experience for the driver. according to Figure 6 and Figure 7 As a block diagram, an exemplary system may include Figure 1-3 characteristics shown. The engine and turbocharger can be Figure 8 and Figure 9 The method runs to provide Figure 4 and Figure 5 the sequence of. In one example, the method includes adjusting turbine vanes to increase engine exhaust system backpressure during engine stopping and starting.

[0025] refer to figure 1 , an internal combustion engine 10 comprising a plurality of cylinders— figure 1 One of the cylinders is shown - controlled by the electronic engine controller 12 . Engine 10 includes combustion chamber...

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Abstract

A system and method for improving engine starting and stopping is described. In one example, turbine vanes are adjusted to increase engine exhaust backpressure to reduce engine stopping time and to limit engine speed overshoot during engine starting. The system and method may reduce engine emissions and improve a vehicle driving experience.

Description

technical field [0001] The present invention relates to methods and systems for improved stopping and starting of turbocharged engines. Background technique [0002] The engine can be stopped and started automatically to save fuel. However, each time the engine is automatically stopped and started, the potential for increased engine emissions and driver dissatisfaction increases. For example, if the engine is spinning longer than desired during engine stop, the engine may pump air into the exhaust system so that exhaust aftertreatment components may perform poorly. On the other hand, engine speed may increase during an engine restart such that a greater than desired amount of engine torque is delivered to the wheels during an engine start. Therefore, automatic engine stopping and starting improves fuel economy at the expense of engine emissions and driver satisfaction. Contents of the invention [0003] The inventors herein have recognized the above mentioned deficienci...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02B37/24
CPCF02B23/104F02B37/24F02D13/0265F02D17/04F02D23/00F02D41/0007F02D41/042F02D41/065F02N11/0814Y02T10/12Y02T10/40
Inventor J·F·斯塔尼克J·A·洛克伍德S·哈舍米D·C·弗兰克斯
Owner FORD GLOBAL TECH LLC
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