Heating of an exhaust-gas after-treatment system by dragging of an internal combustion engine with the aid of an electric motor

A waste gas post-treatment and waste gas heating technology, which is applied in exhaust gas treatment, mechanical equipment, and electric control of exhaust gas treatment devices, can solve problems such as flameout, uneven operation, and inability to compensate losses, so as to save CO2 and improve exhaust gas temperature, enhancing the effect of heating

Inactive Publication Date: 2014-01-01
ROBERT BOSCH GMBH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As a result, the internal combustion engine cannot compensate for its losses and therefore operates unevenly or even stalls if the energy fraction forming the torque is excessively reduced.

Method used

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  • Heating of an exhaust-gas after-treatment system by dragging of an internal combustion engine with the aid of an electric motor
  • Heating of an exhaust-gas after-treatment system by dragging of an internal combustion engine with the aid of an electric motor

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Embodiment Construction

[0031] exist figure 1 A schematic diagram of a method according to an embodiment of the invention is shown in . In step S1 internal combustion engine 3 is started. In step S3 , the need to heat the exhaust gas aftertreatment device is detected. A possible reason for the need for heating can be, for example, a cold start of the internal combustion engine 3 . In order to detect the need to heat the exhaust gas aftertreatment device 15 , the current temperature of the exhaust gas aftertreatment device 15 can be measured and compared with a temperature target value similarly to step S9 a. Alternatively, a cold start can be detected directly on the internal combustion engine. If the system determines that exhaust-gas aftertreatment device 15 must be heated, electric motor 5 is actuated in a step S5 in such a way that it pulls or operates internal combustion engine 3 . In this case, electric motor 5 is adjusted in such a way that it operates internal combustion engine 3 with a p...

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PUM

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Abstract

A method is introduced for heating an exhaust-gas aftertreatment system (15). The method has the following steps: detection of a necessity to heat (S1) the exhaust-gas aftertreatment system (15), and actuation (S5) of an electric motor (5) in such a way that the electric motor (5) drags the internal combustion engine (3) which produces exhaust gas. Here, the internal combustion engine (3) is held at a predefinable rotational speed by the electric motor (5).

Description

technical field [0001] The invention relates to a method for heating an exhaust-gas aftertreatment device by pulling an internal combustion engine by means of an electric motor, a corresponding controller, a computer program element and a computer-readable medium. Background technique [0002] Exhaust gas reduction and monitoring are very important things in modern manufacturing. Furthermore, for example due to emission regulations, the exhaust gas of the internal combustion engine must be treated in an exhaust gas aftertreatment system. A defined operating temperature is required in order to achieve an optimum functional capability of the exhaust gas aftertreatment system. [0003] The exhaust gas aftertreatment system is heated by means of the exhaust gas generated in the internal combustion engine in order to achieve or maintain the desired operating temperature. In this case, most of the energy from the combustion in the internal combustion engine is used to generate t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D41/02B60W10/06B60W20/00
CPCY02T10/54Y02T10/6286F02D2041/026B60W20/1082B60W10/06B60K6/48Y02T10/47B60K2006/4825F01N9/00F02D41/024Y02T10/26Y02T10/6252B60W10/08Y02T10/6221B60W20/16Y02T10/12Y02T10/40Y02T10/62F01N3/00
Inventor J.德赖希D.施塔夫里亚诺斯
Owner ROBERT BOSCH GMBH
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