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Boost control method and system for an engine with cylinder deactivation

A boost control, engine technology, applied in the field of boost control and systems for engines with cylinder deactivation, capable of solving problems such as degraded fuel efficiency, degraded emissions, low-efficiency turbine operating regions, etc.

Inactive Publication Date: 2020-10-27
HYUNDAI MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Additionally, turbochargers can have degraded emissions (EM), degraded fuel efficiency, etc. due to chronic turbo lag issues and inefficient turbo operating regions due to chronic turbo lag issues and turbocharger sizing issues

Method used

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  • Boost control method and system for an engine with cylinder deactivation
  • Boost control method and system for an engine with cylinder deactivation
  • Boost control method and system for an engine with cylinder deactivation

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Embodiment Construction

[0026] The following description is merely exemplary in nature and is not intended to limit the disclosure, application or uses. It should be understood that throughout the drawings, corresponding reference numerals indicate like or corresponding parts and features.

[0027] Hereinafter, a boost control method of an engine for cylinder deactivation (CDA) according to one form of the present disclosure will be described with reference to the accompanying drawings.

[0028] figure 1 is a flow chart showing a boost control method of an engine for CDA, figure 2 is shown in figure 1 A diagram of a state where the supercharger passage 500 (supercharger passage) shown in is opened, and image 3 is shown in figure 1 A diagram of a state in which the supercharger passage 500 is closed is shown in . The case where the boost control method of the engine for CDA is applied, specifically, the diesel engine in which the supercharger 300 and the turbocharger 600 are provided in the eng...

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PUM

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Abstract

The present disclosure provides a boost control method and system for a cylinder deactivated engine. The method comprises the steps of: a CDA operable area confirming step, wherein the controller determines whether the CDA is in the operable area after the engine is started based on the driving state of the engine; an actual boost deriving step, deriving the total target boost from the controller , and calculate the expected actual boost pressure; the supercharger operable area confirmation step, the controller determines whether the supercharger is in the operable area; the supercharger target speed derivation step, the controller derives the supercharger the target rotational speed of the supercharger; and the step of opening the passage of the supercharger, closing the bypass valve to open the passage of the supercharger.

Description

technical field [0001] The present disclosure relates to a boost control method of an engine for cylinder deactivation (cylinder dormancy, CDA), which is used for controlling boosting (boosting) provided to the engine. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and may not constitute prior art. [0003] A diesel engine uses an engine system to which a turbocharger is applied or both a supercharger and a turbocharger are applied to increase the boosting rate of intake air. Specifically, an electric supercharger driven using the driving force of the electric motor instead of the driving force of the engine may be applied. Typically, the compressor of an electric booster has an inverse relationship between flow and compression ratio such that the compression ratio can be low in the high flow band and the compression ratio can be high in the low flow band. That is, beyond the operating ra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02B39/16F02D23/00F02D17/02
CPCF02B39/16F02B2039/168F02D17/02F02D23/005F02B33/44F02B37/04F02B39/10F02D23/00F02D41/0007F02D41/0087F02D41/18Y02T10/12F02B33/02F02B37/12F02D23/02F02B37/16F02B37/162
Inventor 赵孝相李政燮柳诚垠
Owner HYUNDAI MOTOR CO LTD