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Method for operating nozzle

A nozzle and internal combustion engine technology, which is applied in the directions of fuel injection control, engine starting, and engine motor starting, etc., can solve problems such as prolonging the starting time of vehicles, and achieve the effect of reducing the starting time and improving the starting time.

Inactive Publication Date: 2012-11-21
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The time required to reach this pressure in the injection equipment prolongs the start-up time of the vehicle

Method used

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Examples

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Embodiment Construction

[0022] The invention is shown schematically in the drawing with the aid of an exemplary embodiment and will be described in detail below with reference to the drawing.

[0023] Continuing and comprehensively describing the drawings, like reference numerals refer to like components.

[0024] according to Figure 1a The graph for includes abscissa 2 along which time is recorded in seconds. Along the first ordinate 4 (left), the rotational speed of the internal combustion engine is recorded in revolutions per minute, and along the second ordinate 6 (right), the voltage of the battery of the internal combustion engine is recorded in volts.

[0025] A first curve 8 shows the rotational speed of the internal combustion engine at a fuel quantity injected by the nozzles of 4.3 mg per cylinder stroke, and the resulting cranking time of 636 ms in which the fuel pressure reaches the cranking release pressure. A first voltage curve 10 shows the resulting battery voltage curve. With a f...

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Abstract

The invention relates to a method for operating at least one nozzle of a spraying device of an internal combustion engine. The internal combustion engine has a starting rotation speed (100, 102, 104, 106) when being started at a k-th time. The rotation speed of the internal combustion engine can be improved to a rated idling rotation speed through a spraying by at least one nozzle. The trigger lasting time of at least one nozzle is adjusted related to the starting rotation speed (100, 102, 104, 106) so as to the following (k+1)-th time starting of the internal combustion engine, and at least another rotation speed generated when the internal combustion engine is started at the k-th time based on the starting rotation speed (100, 102, 104, 106) is adjusted.

Description

technical field [0001] The invention relates to a method and a device for operating at least one nozzle of a spraying system. Background technique [0002] In the case of starting an internal combustion engine, a starting quantity of fuel is required within a predetermined tolerance range, and start-stop applications (ISS, idle-start-stop systems) are increasingly used in internal combustion engines. In order to maintain a starting quantity within a tolerance range, a predetermined system pressure and thus a pressure of the fuel is maintained in an injection system for an internal combustion engine. The time required to reach this pressure in the injection equipment prolongs the start-up time of the vehicle. [0003] A method for correcting a model-supported fuel control for engine starting is known from publication DE 10 2006 018 592 A1. Also described herein is a fuel control system for regulating fuel to cylinders of an internal combustion engine. The fuel supply for t...

Claims

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Application Information

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IPC IPC(8): F02D41/06F02D41/30
CPCF02D41/40Y02T10/44F02D2200/101F02D41/2438F02N11/0814F02N2200/022F02D41/065Y02T10/40
Inventor C.施泰因布雷歇M.吕克勒T.德米尔B.格罗塔
Owner ROBERT BOSCH GMBH
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