Method for controlling and adjusting an internal combustion engine

A technology of internal combustion engine and suction throttle valve, applied in electrical control, engine control, fuel injection control and other directions, can solve different problems and achieve the effect of stable emergency operation

Active Publication Date: 2017-12-08
ROLLS ROYCE SOLUTIONS GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This solution has proven itself in practice, but it has also been established that the rail pressure does not always reach the same level after a failure of the rail pressure sensor, thus causing different engine failures during emergency operation power

Method used

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  • Method for controlling and adjusting an internal combustion engine
  • Method for controlling and adjusting an internal combustion engine
  • Method for controlling and adjusting an internal combustion engine

Examples

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Embodiment Construction

[0026] figure 1 A system diagram showing an electronically controlled internal combustion engine 1 with a common rail system. The common rail system comprises the following mechanical components: a low-pressure pump 3 for supplying fuel from a fuel tank 2; a variable suction throttle 4 for influencing the flowing fuel volume flow; for supplying under increased pressure A high pressure pump 5 for fuel; a pressure accumulator 6 for accumulating fuel; and an injector 7 for injecting fuel into the combustion chamber of the internal combustion engine 1 . Optionally, a single accumulator can also be assigned to the common rail system, so that, for example, a single accumulator 8 is built into the injector 7 as an additional buffer body. As a protection against impermissibly high pressure levels in the accumulator 6, a passive pressure-limiting valve 11 is provided, which opens, for example, at an accumulator pressure of 2400 bar and in the open state closes the The fuel leaks from...

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Abstract

The invention relates to a method for controlling and adjusting an internal combustion engine (1), the rail pressure (pCR) being controlled in a closed loop mode in the normal operating state and an emergency operation mode being activated once a defective rail pressure sensor (9) is detected, in which emergency operation the rail pressure (pCR) is controlled in an open loop mode. The invention is characterized in that in the emergency operation mode, the rail pressure (pCR) is gradually increased until a passive pressure relief valve (11) is activated which redirects fuel from the rail (6) to the fuel tank (2) when it is open.

Description

[0001] This application is a divisional application of the patent application with the application number CN201080047926.6, the filing date is October 19, 2010, and the invention title is "method for controlling and regulating an internal combustion engine". technical field [0002] The invention relates to a method for controlling and regulating an internal combustion engine, wherein the rail pressure is adjusted during normal operation, switching from normal operation to emergency operation when a faulty rail pressure sensor is detected, and in emergency operation Control accumulator pressure. Background technique [0003] In internal combustion engines with a common rail system, the quality of combustion is decisively determined by the pressure level in the rail. Therefore, the accumulator pressure is adjusted in order to comply with the statutory discharge limit values. Typically, the accumulator pressure regulation loop comprises a reference junction for determining th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D41/38
CPCF02D41/3809F02D41/1401F02D41/20F02D41/222F02D41/2422F02D41/3845F02D41/3863F02D2041/2027F02D2041/223F02D2041/227F02D2200/0604F02D2250/31
Inventor A.德尔克
Owner ROLLS ROYCE SOLUTIONS GMBH
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