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Intensive locking multi-mode variable valve driving system

A drive system, locking technology, applied in the direction of engine components, combustion engines, machines/engines, etc., to achieve the effect of improving power, high cost performance, and optimizing operating conditions

Inactive Publication Date: 2017-05-10
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no variable valve drive system that can meet the above requirements at the same time, so the development of a multi-mode variable valve drive system is imminent

Method used

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  • Intensive locking multi-mode variable valve driving system
  • Intensive locking multi-mode variable valve driving system
  • Intensive locking multi-mode variable valve driving system

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Embodiment Construction

[0032] The invention relates to an intensive locking multi-mode variable valve drive system. It includes a valve drive mechanism 2 and a camshaft phase adjustment mechanism 4 arranged on the camshaft 3. It also includes a camshaft 3, a mode transmission mechanism 5, a mode selection mechanism 6, a mode switching mechanism 7, a valve control mechanism 8, and a valve adjustment mechanism 9. figure 1 It is a schematic diagram of an intensive locking multi-mode variable valve drive system with dual cam drive, dual input, single output, single switching, single valve operation, and single adjustment. The camshaft 3 is provided with a first cam 301 and a second cam 302. Since the four-stroke drive mode and the four-stroke braking mode both operate the intake / exhaust valve once every 720° crank angle, these two modes are called the four-stroke mode; the two-stroke drive mode and the two-stroke braking mode are both every 360 °Crankshaft angle intake / exhaust valve operates once, and t...

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Abstract

The invention discloses an intensive locking multi-mode variable valve driving system, and belongs to the field of engine valve driving. The system mainly comprises a camshaft, a mold transmission mechanism, a mold standby mechanism, a mold switching mechanism, a camshaft phase adjusting mechanism, a valve adjusting mechanism, a valve control mechanism and the like. The mold switching mechanism is matched with the camshaft phase adjusting mechanism for use to realize conversion among such multiple modes as an engine two-stroke driving mode, a four-stroke driving mode, a two-stroke braking mode and a four-stroke braking mode, and is further matched with the valve control mechanism for use to finally satisfy optimal ventilation requirements of an engine under different working conditions so as to achieve the purposes of comprehensively improving the engine dynamic property, the fuel economy, the emission performance and the braking safety. The system is simple and compact in structure and easy to arrange, and can adopt such different mechanisms as hydraulic forms or mechanical forms to provide different schemes with such requirements as variable valve flexibility degree, reliability and cost to users.

Description

Technical field [0001] The invention relates to an intensive locking type multi-mode variable valve drive system, which belongs to the field of engine valve drive. Background technique [0002] With the increasingly serious energy and environmental issues, and people's focus on the driveability and safety of vehicles, future engines need to comprehensively consider power, economy, emissions and safety on the premise of meeting emission targets. This requires optimizing engine performance in the full range of driving and braking conditions. At present, most of the technologies such as variable valve, variable stroke number, cylinder deactivation, auxiliary braking, new combustion mode, variable compression ratio, and variable EGR that have attracted much attention are only performed in the small range of engine operating conditions. Make improvements. For example, the existing variable valve technology is only used in the driving conditions of a fixed-stroke engine, and is mostl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01L1/34F02B69/06
CPCF01L1/34F02B69/06
Inventor 崔靖晨田华隆武强田江平王阳刘威杨添淏
Owner DALIAN UNIV OF TECH
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