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Variable driver

A drive, variable technology, applied in the direction of engine components, machines/engines, non-mechanically actuated valves, etc., which can solve problems affecting drive function or agility, system strength, reliability and cost impact

Inactive Publication Date: 2014-10-08
NINGBO HOYEA MACHINERY MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Excessively large pistons can negatively impact drive function or agility; excessive hydraulic system pressure can negatively impact system strength, reliability, and cost

Method used

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Embodiment Construction

[0074] The embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, but the protection scope of the present invention is not limited by these embodiments. The terms "top" and "bottom" or "upper" and "lower" or "left" and "right" in this manual are only used to indicate the relative positions of the various parts of the driver in the figure, and The installation position or direction of the variable valve actuator itself is not limited.

[0075] Such as figure 1 As shown, the variable valve actuator of the first embodiment of the present invention includes an actuator housing 21 in which a longitudinal axis having first and second directions is defined, along the top (or upper) The direction from the bottom (or lower) part is the second direction, and the direction from the bottom (or lower) part to...

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PUM

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Abstract

The invention provides a variable valve driver. The variable valve driver comprises a driver casing, a driving cylinder, a driving piston, a piston rod, a driving cylinder first cavity, a driving cylinder second cavity, a spring system, a first opening, a second opening, a driving switching valve, a first runner, a supercharger and supercharge switching valve, wherein the driving cylinder is provided with a driving cylinder first end part and a driving cylinder second end part; the driving piston can slide between the driving cylinder first end part and the driving cylinder second end part; the first opening and the second opening are respectively connected with fluid of the driving cylinder first cavity and the driving cylinder second cavity; the driving switching valve is respectively connected with the supercharger and the driving cylinder first cavity through the supercharge switching valve and the first runner connected with the supercharge switching valve in parallel; the supercharge switching valve opens the first runner when being at a first position, so that the variable driver realizes a normal driving function; the supercharge switching valve opens the supercharger when being at a second position, so that the variable driver realizes a cylinder pressure braking function.

Description

technical field [0001] The present invention relates to a driver control technology, and in particular to a camless variable valve driver with a supercharger. Background technique [0002] In the prior art, various variable valve actuation (Variable Valve Actuation or VVA for short) systems can be used to effectively control valve timing and lift to improve engine performance, fuel economy, injection and other characteristics. These systems can mainly be classified into mechanical, electrohydraulic and electromagnetic forms according to the devices or drives controlled. According to the scope of control, it can be divided into variable valve lift and timing, variable valve timing and variable valve lift. They can also be divided into cam-based and camless forms. [0003] In the case of a cammed system, the conventional engine cam system is maintained and slightly modified to indirectly control valve timing and / or valve lift. In a camless system, the traditional engine cam...

Claims

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Application Information

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IPC IPC(8): F01L9/02F01L9/10F01L9/16F01L9/40
Inventor 娄征文韶
Owner NINGBO HOYEA MACHINERY MFG