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Valve drives for internal combustion engines

A driver and internal combustion engine technology, which is applied in the direction of valve drive devices, machines/engines, mechanical equipment, etc., can solve the problems of not being able to start the cylinder alone, increase manufacturing and maintenance costs, and long start-up time, so as to shorten the start-up time and reduce manufacturing costs. Cost and maintenance cost, effect of simple structure

Active Publication Date: 2021-08-06
MAHLE INT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the control shafts known from the prior art have the disadvantage that the adjustment device can only be actuated by a complex movement sequence—for example, a rotation combined with an axial movement
Not only does this result in longer startup times, but it also increases manufacturing and repair costs
In addition, individual activation of the individual cylinders cannot be achieved, or can only be achieved with great effort

Method used

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  • Valve drives for internal combustion engines
  • Valve drives for internal combustion engines
  • Valve drives for internal combustion engines

Examples

Experimental program
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Embodiment Construction

[0038] figure 1 A partial view of the valve drive 1 of the internal combustion engine, which is not shown in more detail, is shown. The valve drive 1 includes a camshaft 2 and a cam follower 3 . The camshaft 2 includes a first cam set 4 with a first cam 4a and a second cam 4b and a second cam set 5 with a first cam 5a and a second cam 5b. The first cam set 4 and the second cam set 5 are non-rotatably fixed on the camshaft 2 . Via the first cam set 4 and the second cam set 5 , cylinders which are not shown in more detail can be actuated, eg the first cam set 4 actuates the intake valves of the cylinders and the second cam set 5 actuates the exhaust valves of the cylinders.

[0039] The cam follower 3 is drivingly connected to the first cam set 5 via the first roller 3a and is drivingly connected to the second cam set 5 via the second roller 3b. In the first position, the rollers 3a and 3b interact with the first cams 4a and 5a of the respective cam sets 4 and 5, and in the s...

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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) with a first cam (4a, 5a) and with a second cam (4b, 5b). The valve drive (1) further comprises at least A regulating device (6). The valve drive (1) also comprises at least one control shaft (9) with at least one control cam set (10) with a first control cam ( 10a) with a second control cam (10b). According to the invention, the control shaft (9) is rotatably mounted and the first control cam (10a) comprises at least one free area (11) and at least one stop area (12) for the corresponding first engagement element (6a) ), and the second control cam (10b) includes at least one free area (11) and at least one stop area (12) for the corresponding second engagement element (6b).

Description

technical field [0001] The invention relates to a valve drive for an internal combustion engine with a camshaft and a cam follower. Background technique [0002] Cam set for internal combustion engines with camshaft and with at least one cam follower and with camset non-rotatably fixed on the camshaft (with a first cam and a second cam axially adjacent to the first cam ) general purpose valve drives are known. Therein, the cam follower is in a first position in driving connection with the first cam of the respective cam set and in a second position with the second cam of the respective cam set. [0003] Via the adjusting device, the cam follower can be switched between a first position and a second position and thus activate or deactivate the corresponding cylinder of the internal combustion engine. For controlling the actuating device, valve drives known from the prior art comprise a control shaft which is mounted rotatably and axially displaceably and which actuates the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01L1/04F01L1/047F01L1/12F01L1/18
CPCF01L1/04F01L1/047F01L1/12F01L1/18F01L1/053F01L1/181F01L1/267F01L1/38F01L13/06F01L2013/103F01L2013/001F01L13/0005F01L2305/00F01L1/22F01L1/024F01L1/026F01L13/0036
Inventor 帕特里克·奥尔瑟马库斯·瓦尔希托尔斯腾·伊内
Owner MAHLE INT GMBH