sliding cam system

A sliding cam, cam technology, used in engine control, engine components, machine/engine, etc.

Active Publication Date: 2022-03-11
MAN TRUCK & BUS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The arrangement of the drive for deflecting the cam carrier (sliding cam) poses a particular challenge in the case of space constraints

Method used

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Embodiment Construction

[0038] The exemplary embodiments shown in the figures are at least partially identical, such that similar or identical parts bear the same reference signs, and in order to avoid repetition they are also explained with reference to other exemplary embodiments or to the description of the figures.

[0039] figure 1 A variable valve mechanism 10 is shown. For example, the variable valve train 10 may be part of an internal combustion engine of a commercial vehicle, in particular a truck or a bus. The variable valve mechanism 10 includes a first gas exchange valve 12 , a second gas exchange valve 14 , a sliding cam system 16 , a force transmission device 18 , a first bearing housing (bearing body) 20 and a second bearing housing (bearing body) 22 .

[0040] The variable valve mechanism 10 is used to regulate the control of the ventilation valves 12 , 14 . In particular, the opening times, closing times and / or valve lifts of the gas exchange valves 12 , 14 can be adjusted. The ga...

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PUM

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Abstract

The invention relates to a sliding cam system (16) for an internal combustion engine. The sliding cam system (16) includes a camshaft (24) and a cam carrier (26), which is non-rotatably and axially displaceable arranged on the camshaft (24). The cam carrier (26) includes a first shift gate (36) and preferably a second shift gate (38). The sliding cam system (16) comprises a first actuator (28) having an element (46), in particular a pin, displaceable along the longitudinal axis of the camshaft (24), capable of contacting the first The sliding slot (36) is converted for axial movement of the cam support (26) in a first direction. Preferably, the sliding cam system (16) comprises a second actuator (30) having an element (48), in particular a pin, movable along the longitudinal axis of the camshaft (24), capable of A second shift gate (38) is contacted for axial movement of the cam carrier (26) in a second direction opposite to said first direction.

Description

technical field [0001] The invention relates to a sliding cam system for an internal combustion engine. Background technique [0002] Valve-controlled internal combustion engines have one or more controllable intake or exhaust valves for each cylinder. Variable valve trains provide the flexibility to control valves to vary opening time, closing time and / or valve lift (Ventilhubs). In this way, engine operation can be adapted to specific load conditions, for example. For example, a variable valve train can be realized by a so-called sliding cam system. [0003] DE 19611641 C1 discloses an example of such a sliding cam system, by means of which the gas exchange valve can be driven with a plurality of different lift curves. For this purpose, a sliding cam with at least one cam portion comprising a plurality of cam tracks is non-rotatably and axially displaceable mounted on the camshaft; an actuator in the form of a pin is introduced radially into the sliding cam from the out...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01L13/00F01L1/047
CPCF01L1/047F01L13/0036F01L2001/0473F01L2013/0078F01L1/181F01L1/26F01L2013/0052F01L2013/101F01L2305/00F02D13/02F01L1/267F01L2013/103F01L2013/105F01L2013/106
Inventor 斯特凡·希施曼延斯·迪特里希
Owner MAN TRUCK & BUS AG
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