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Water injection device, in particular of an internal combustion engine, and method for operating such a water injection device

A technology for water injection equipment and internal combustion engines, which can be applied to internal combustion piston engines, mechanical equipment, combustion engines, etc., and can solve problems such as low pH value

Inactive Publication Date: 2019-10-29
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, condensate from air conditioning units and exhaust gas condensate may contain too high a proportion of ions or have a pH value that is too low

Method used

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  • Water injection device, in particular of an internal combustion engine, and method for operating such a water injection device
  • Water injection device, in particular of an internal combustion engine, and method for operating such a water injection device
  • Water injection device, in particular of an internal combustion engine, and method for operating such a water injection device

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Embodiment Construction

[0031] Refer below Figures 1 to 7 A water injection system 1 of an internal combustion engine 2 according to a preferred embodiment is described in detail. The internal combustion engine 2 is operated in particular according to the Otto principle and with direct gasoline injection.

[0032] exist figure 1 An internal combustion engine 2 with a plurality of cylinders and a part of a water injection system 1 according to the invention are schematically shown in . Each cylinder of the internal combustion engine 2 includes a combustion chamber 20 in which a piston 21 can reciprocate. Further preferably, each cylinder of internal combustion engine 2 includes an intake duct 22 via which air is supplied to combustion chamber 20 . The exhaust gas is discharged via the exhaust gas passage 23 . For this purpose, an intake valve 25 is arranged on the intake duct 22 and an exhaust valve 26 is arranged on the exhaust duct 23 . Furthermore, reference numeral 24 designates a fuel injec...

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PUM

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Abstract

The present invention relates to a water injection device, in particular of an internal combustion engine (2). The water injection device comprises a water tank (5) for storing water; a conveying element (3) for conveying water, the conveying element (3) being connected to the water tank (5); at least one water injector (6), which is connected to the conveying element (3), for injecting water; anda water quality and water fill level detection device (18) for detecting a quality of the water in the water tank (5) and a fill level of the water tank (5). Further aspects of the invention relate to an internal combustion engine which comprises a water injection device (1) of this type and to a method for operating a water injection device (1) of this type.

Description

technical field [0001] The invention relates to a water injection system for an internal combustion engine and to such an internal combustion engine. A further aspect of the invention relates to a method for operating such a water spray installation. Background technique [0002] Due to the increasing demands on reducing CO2 emissions, internal combustion engines are increasingly optimized with regard to fuel consumption. However, the known internal combustion engines cannot be operated optimally with regard to consumption at operating points with high loads, since the operation is limited by the tendency to knock and the high exhaust gas temperature. One possible measure for reducing the tendency to knock and for lowering the temperature of the exhaust gas is water injection. Here, a separate water injection system is usually present in order to be able to implement the water injection. Thus, for example, WO 2014 / 080266 A1 discloses a water injection system for an intern...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M25/022G01N27/06F02M25/028
CPCF02M25/0227G01N27/06F02M25/028Y02T10/12G01F23/2962G01N9/24G01N33/18
Inventor I·布拉克P·申克
Owner ROBERT BOSCH GMBH
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