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Valve actuators for internal combustion engines

A driver and internal combustion engine technology, applied in the direction of machines/engines, valve devices, mechanical equipment, etc., can solve the problem of increasing the total cost of valve drives, achieve the effect of reducing the total cost and maintenance cost, and simplifying activation

Active Publication Date: 2022-03-01
MAHLE INT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually, the corresponding engagement elements are each adjusted by a linear actuator and a valve drive activated in this way, however, this requires a major control expenditure
Overall, the overall cost of the valve drive is also significantly increased by the more expensive linear actuator

Method used

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  • Valve actuators for internal combustion engines
  • Valve actuators for internal combustion engines
  • Valve actuators for internal combustion engines

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] according to figure 1 , the valve drive 1 according to the present invention comprises a camshaft 2 and a cam follower 3 , wherein the camshaft 2 comprises a first cam set 4 and a second cam set 5 fixed non-rotatably on the camshaft 2 . The first cam group 4 includes a first cam 4a and a second cam 4b axially adjacent to the first cam 4a. The second cam group 5 includes a first cam 5a and a second cam 5b, and the second cam 5b is fixed on the camshaft 2 adjacent to the first cam 5a. The cam follower 3 is drivably connected in the first position by the first cams 4a and 5a of the cam sets 4 and 5, and is drivably connected in the second position by the second cams 4b and 5b of the cam sets s4 and 5. For this purpose, the cam follower 3 comprises a first roller 3a and a second roller 3b, each of which rests against a first cam 4a and 5a or a second cam 4b and 5b and is connected to the first cam 4a and 5a or a second cam 4a and 5a. The two cams 4b and 5b interact.

[0...

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PUM

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Abstract

The invention relates to a valve drive (1) for an internal combustion engine, wherein the valve drive (1) comprises a camshaft (2) and at least one cam follower (3). The camshaft (2) here comprises at least one cam set (4, 5) having a first cam (4a, 5a) and a second cam (4b, 5b). Furthermore, the valve drive (1) comprises at least one adjustment device (6) with an adjustable first engagement element (7a) and an adjustable second engagement element (7b), each of which is connected to the first A guide (8a) interacts with a second guide (8b). According to the invention, the adjusting device (6) comprises a stop (11) axially displaceable relative to the rocker shaft (10), having a first stop area (12a) for the first engaging element (7a) and a In the second stop area (12b) of the second engagement element (7b).

Description

technical field [0001] The invention relates to a valve drive for an internal combustion engine having a camshaft and at least one cam follower. Background technique [0002] A known universal valve drive for an internal combustion engine has a camshaft and at least one cam follower, and at least one cam set non-rotatably fixed on the camshaft, the cam set having a first cam and an axially adjacent first The second cam of the cam. Here, the cam follower is drivingly connected to the first position of the first cam of the corresponding cam set, and is drivingly connected to the second position of the second cam of the corresponding cam set. [0003] By means of the adjusting device, the cam follower can be displaced between a first position and a second position, thus activating or deactivating the corresponding cylinder of the internal combustion engine. The adjustment device comprises an adjustable first engagement element and an adjustable second engagement element, whic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01L1/18F01L13/00F01L1/047
CPCF01L1/047F01L1/18F01L13/0005F01L13/0036F01L2820/031F01L2013/0052F01L2013/105F01L1/053F01L1/181F01L1/267F01L2013/101F01L13/06F01L2305/00
Inventor 帕特里克·奥尔瑟托尔斯腾·伊内戴维·莫茨科马库斯·瓦尔希
Owner MAHLE INT GMBH