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Method and device for operating an internal combustion engine with dual fuel injection

An internal combustion engine and fuel technology, which is applied in the direction of fuel injection control, internal combustion piston engine, combustion engine, etc., can solve the problem of compression ratio knocking tendency limitation and other problems

Active Publication Date: 2022-03-04
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the maximum possible compression ratio is limited by the fuel's propensity to knock

Method used

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  • Method and device for operating an internal combustion engine with dual fuel injection
  • Method and device for operating an internal combustion engine with dual fuel injection
  • Method and device for operating an internal combustion engine with dual fuel injection

Examples

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Embodiment Construction

[0034] exist figure 1 The internal combustion engine shown in has four cylinder blocks 11 which are covered by cylinder heads 12 . The cylinder head 12 delimits a combustion chamber 13 in each cylinder block 11 , together with a reciprocating piston, not shown here, guided in the cylinder block 11 , which has an inlet controlled by an inlet valve. The inlet forms the juncture of the feed channel through the cylinder head 12 .

[0035] The fuel injection system shown comprises an air flow path 18 for supplying combustion air to the combustion chamber 13 of the cylinder block 11 , which has flow channels 17 separated from one another at the ends and leading to the individual feed channels. . In addition, a first group of fuel injection valves 19 that inject fuel directly into each of the combustion chambers 13 of the cylinder block 11 and a second group of fuel injection valves 20 that inject fuel into the flow passage 17 are provided.

[0036] The fuel injection valves of th...

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Abstract

The invention relates to a method and a device for operating an internal combustion engine with dual intake-pipe-based fuel dosing and direct fuel dosing, wherein the quantity distribution calculation is used for the intake-pipe-based fuel dosing and for the direct fuel dosing respectively required fuel quantity, and the internal combustion engine also has a variable compression of the fuel / air mixture in at least one combustion chamber of the internal combustion engine, wherein it is provided, in particular, to detect (405, 410) the current operating conditions of the internal combustion engine, including the currently existing compressing ( 405 ) and determining ( 420 ) the assigned value for said quantity in relation to the detected operating condition.

Description

technical field [0001] The invention relates to a method and a device for operating an internal combustion engine with a double fuel distribution and variable compression of a fuel / air mixture in a combustion chamber. The subject of the invention is also a computer program, a machine-readable data carrier for storing the computer program, and an electronic controller by means of which the method according to the invention can be carried out. Background technique [0002] In the dual fuel distribution mentioned here, intake manifold injection and direct injection are coupled or run in parallel in the fuel distribution of the internal combustion engine. It is known from practice that such internal combustion engines can be configured as a dual system, in which mixed operation the fuel can be distributed in parallel by means of intake manifold injection (SRE) and by means of fuel or fuel direct injection (BDE) Delivery to the cylinder block of the internal combustion engine. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D41/30
CPCF02D41/3094F02D41/345F02D35/027F02D2700/03Y02T10/40
Inventor C.旺德林R.埃克尔T.库恩T.霍尔曼U.舒尔茨
Owner ROBERT BOSCH GMBH
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