Car engine air valve variable phase device

A technology of automobile engine and valve, applied in the direction of engine components, machines/engines, mechanical equipment, etc., to achieve the effect of simple structure

Active Publication Date: 2009-01-07
SHANGHAI SICAR VEHICLE TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no fixed valve overlap angle design that allows the engine to achieve perfect output performance at high and low speeds. The most suitable fixed overlap angle can only be selected according to the needs of the matching model.

Method used

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  • Car engine air valve variable phase device

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Embodiment Construction

[0012] The invention adopts mechanical control, utilizes the working characteristics of the planetary gear, and forms the phase change of the ring gear and the planet carrier by controlling the rotation of the sun gear.

[0013] According to the accompanying drawings, the present invention includes a camshaft 1, and also includes two sets of planetary gears 2 and a sun gear 4, a planet carrier 3, a control adjustment wheel 6, a stepping motor 7 and a pulley 5. The camshaft pulley meshes internally with two sets of planetary gears, and the sun gear externally meshes with the left set of planetary gears is integrated with the control adjustment wheel. The rotating shaft of the planetary carrier of two groups of planetary gears is arranged on the axle that this sun gear connects engine casing 9, and the sun gear that meshes with the right side one group of planetary gears is fixed and stationary with respect to the engine casing, and the right side planetary gear The internally m...

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Abstract

The present invention provides an automobile engine valve changeable phase mechanism which comprises a camshaft and is characterized by also comprising two sets of planet wheels and sun wheels, a planet carrier, a controlling and adjusting wheel, a step motor and a belt pulley. The mechanism combination is as follows: the camshaft and the belt pulley are internally meshed with two sets of planet wheels; the sun wheel which is externally meshed with one set of planet wheels at left is integrated with the controlling and adjusting wheel as a whole; the sun wheel which is externally meshed with one set of planet wheels at right is connected with an engine casing; the rotating shaft of the planet carrier of two sets of planet wheels is arranged at the shaft of the sun wheel for connecting with the engine casing; a gear ring which is internally meshed with one set of planet wheels at right is connected with the camshaft directly; a gear which is connected with the step motor is meshed with the controlling and adjusting wheel. The automobile engine valve changeable phase mechanism uses a planet gear mechanism, has simpler structure, can control a best cams shaft phase at any rotating speed and can change directly on a produced non-VVT double overhead camshaft engine without changing a engine body.

Description

technical field [0001] The invention relates to a gear transmission mechanism, in particular to an automobile engine valve variable phase mechanism. Background technique [0002] When the engine is working, if you want to achieve the theoretical combustion state, you need to let more fresh air into the combustion chamber and let the exhaust gas out of the combustion chamber as much as possible. The best solution is to open the intake valve in advance and delay the exhaust valve. In this way, between the intake stroke and the exhaust stroke, the intake and exhaust valves are opened at the same time, which is the valve overlap angle. At present, there is no fixed valve overlap angle design that allows the engine to achieve perfect output performance at high and low speeds. The most suitable fixed overlap angle can only be selected according to the needs of the matching model. VVT technology is to solve this contradiction by realizing variable valve superposition angle through...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01L1/344
CPCF01L1/352
Inventor 邱显东骆军王燕文
Owner SHANGHAI SICAR VEHICLE TECH DEV
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