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Valve timing control method for a continuously variable valve sustained engine

A technology of engine load and engine speed, applied in the direction of engine control, engine components, combustion engine, etc., can solve problems such as delay, opening or closing timing advance, etc., to achieve the effect of improving energy performance, reducing the amount of starting fuel, and shortening the time

Active Publication Date: 2021-03-09
HYUNDAI MOTOR CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Also, in a state where the valve opening duration is fixed, the CVVT device can advance or retard the opening or closing timing of the valve

Method used

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  • Valve timing control method for a continuously variable valve sustained engine
  • Valve timing control method for a continuously variable valve sustained engine
  • Valve timing control method for a continuously variable valve sustained engine

Examples

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Embodiment Construction

[0037] 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 similar or corresponding parts and features.

[0038] As those skilled in the art would realize, the forms described may be modified in various different ways, all without departing from the spirit or scope of the present disclosure.

[0039]Unless expressly stated to the contrary, throughout this specification and in the claims that follow, the word "comprise" and variations such as "comprises" or "comprises" will be read to imply the inclusion of stated elements but not the exclusion of any other element.

[0040] It should be understood that the term "vehicle" or "vehicular" or other similar terms as used herein includes motor vehicles in general (including hybrid vehicles, plug-in hybrid electric vehicles, and other alternative fuel vehicles (e.g., f...

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Abstract

The present application discloses a method for controlling the valve timing of a continuously variable valve continuous engine, and in particular relates to a method for controlling the valve timing of an engine. The method includes: dividing a plurality of control areas according to engine speed and engine load; In the first zone, the maximum duration is applied to the intake valves, and the exhaust valves are controlled to limit valve overlap; in the second zone, the intake and exhaust valves are controlled to maintain the maximum duration; in the third zone , advance the intake valve closing (IVC) timing and exhaust valve closing (EVC) timing; in the fourth zone, make the IVC timing close to the bottom dead center (BDC); in the fifth zone, control the throttle valve to fully open , advance the intake valve opening (IVO) timing before top dead center (TDC), and control the IVC timing so that it becomes a predetermined value after BDC; and in the sixth area, control the throttle valve to fully open, and advance IVC timing.

Description

[0001] Cross References to Related Applications [0002] This application claims priority and benefit from Korean Patent Application No. 10-2015-0177464 filed on December 11, 2015, the entire contents of which are hereby incorporated by reference. technical field [0003] The present disclosure relates to systems and methods for controlling valve timing of a continuously variable valve continuous engine. Background technique [0004] The statements in this section merely provide background information related to the present disclosure and may not constitute prior art. [0005] The internal combustion engine burns a mixture of fuel and air in a predetermined ratio through a set ignition pattern to generate power by using an explosion pressure. [0006] Generally speaking, the camshaft is driven by a timing belt connected to the crankshaft, which converts the linear motion of the cylinder into rotary motion through the burst pressure to activate the intake valve and exhaust v...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D13/02
CPCF02D13/0203F02D13/0261F02D2200/101F02D41/1406F02D41/0007F02D2041/001F02D13/0219F01L13/0015F01L2820/032F01L2001/0537F01L1/34F02D41/0002F02D2041/002Y10S903/905Y02T10/12Y02T10/40F01L1/047B60W20/10B60W10/06
Inventor 柳印相河京杓孙维祥权奇荣
Owner HYUNDAI MOTOR CO LTD
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