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A continuously variable valve mechanism with variable modes

A valve mechanism and variable technology, applied in mechanical equipment, engine components, machines/engines, etc., to achieve the effects of reducing fuel consumption, reducing exhaust emissions, and adjustable braking power

Inactive Publication Date: 2020-04-14
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At this stage, there is no variable valve mechanism that can simultaneously meet the requirements of variable mode and continuously variable valve events, and meet the practical requirements. Therefore, the development of a variable mode continuously variable valve mechanism is imperative.

Method used

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  • A continuously variable valve mechanism with variable modes
  • A continuously variable valve mechanism with variable modes
  • A continuously variable valve mechanism with variable modes

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Embodiment Construction

[0027] The invention relates to a variable mode continuously variable valve mechanism. figure 1 with figure 2 They are the front view and side view of the overhead camshaft continuously variable valve mechanism with variable mode. image 3 with Figure 4They are the front view and side view of the bottom camshaft type variable mode continuously variable valve mechanism respectively. It includes valve assembly, cam, adjustable rocker arm, adjustable cam, track, compression spring, rocker arm, rocker arm return spring. The cams include exhaust brake cam 401, exhaust drive cam 402, intake brake cam 403 and intake drive cam 404, and the adjustable rocker arm includes exhaust brake adjustable rocker arm 501, exhaust drive adjustable rocker arm 502, intake brake adjustable rocker arm 503 and intake drive adjustable rocker arm 504, adjustable cams include exhaust brake adjustable cam 801, exhaust drive adjustable cam 802, intake brake adjustable cam 803 And intake drive adjustab...

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Abstract

The invention relates to a variable-mode continuous variable valve mechanism, belonging to the field of engine valve driving and auxiliary braking. The variable-mode continuous variable valve mechanism comprises four sets of cams, an adjustable rocker arm, adjustable cams, a track, a pressure spring, a rocker arm, a rocker arm reset spring, a valve component, etc., which are respectively used foran exhaust braking mode, an exhaust driving mode, an intake braking mode and an intake driving mode. By adjusting the phase positions of the four adjustable cams, the variable-mode continuous variablevalve mechanism realizes switching of the driving modes and the braking modes, and also realizes continuous variability of a valve lift curve under each mode. Thus, the braking safety of an engine isimproved, the braking power is adjustable, the driving power is improved, and fuel consumption and tail gas exhaust are reduced.

Description

technical field [0001] The invention relates to a variable mode continuously variable valve mechanism, which belongs to the field of engine valve driving and auxiliary braking. Background technique [0002] GB 7258-2012 "Technical Conditions for Motor Vehicle Operation Safety" requires: passenger cars with a vehicle length greater than 9m (for special school buses, the vehicle length is greater than 8m), trucks and special operation vehicles with a total mass greater than or equal to 12000 kg, and all dangerous goods transport vehicles , should be equipped with a retarder or other auxiliary braking devices. Retarders such as eddy current and electromagnetic retarders have the disadvantage of being prone to overheating and failure after long-term work. Although the maximum braking power of engine-assisted braking is low, it will not cause overheating problems after long-term work, and the weight, noise, cost, and installation In terms of space, etc., engine-assisted braking ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01L13/00F01L13/06F01L1/26
CPCF01L1/26F01L13/0021F01L13/0036F01L13/06
Inventor 崔靖晨隆武强田华王阳刘威王鑫
Owner DALIAN UNIV OF TECH
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