Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Two-stroke large diesel engine

A two-stroke, diesel engine technology, applied in mechanical equipment, engine components, machines/engines, etc., can solve problems such as high manufacturing costs and maintenance costs

Active Publication Date: 2008-09-17
MAN DIESEL & TURBO FILIAL AF MAN DIESEL & TURBO SE TYSKLAND
View PDF1 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The dosing device provided on the known device results in an expensive construction with high manufacturing and maintenance costs

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Two-stroke large diesel engine
  • Two-stroke large diesel engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The main field of application of the invention is the use of two-stroke large diesel engines such as those on marine drives. The structure and principle of action of such devices are known per se.

[0023] Such motors usually have a plurality of cylinders 1 arranged side by side. In FIG. 1 , the upper region of one such cylinder 1 is shown. It comprises a cylinder liner (not shown in FIG. 1 ) and a cylinder head 2 fitted thereon. In the cylinder there is a combustion chamber 3 which is provided with an upper coaxial exhaust port 4 which can be controlled by means of an associated exhaust valve 5 .

[0024] The exhaust valve 5 has a valve disk 6 which interacts with a valve seat arranged in the region of the exhaust opening 4 and which is mounted on the lower end of a spindle-shaped valve stem 7 . Connected to the exhaust port 4 is an exhaust channel 8 which opens towards the combustion chamber 3 when lifted from the seat to which the exhaust valve is assigned, or vic...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

In a two-stroke reciprocating piston engine having at least one cylinder (1) whose combustion chamber (3) has an outlet opening (4), which can be controlled by an outlet valve (5) which can be actuated by means of an actuating device which comprises a feed device and a return device, and on whose cylinder head (2) is placed a valve housing (9) which comprises an outlet duct (8), which adjoins the outlet opening (4) of the combustion chamber (3), and a guide sleeve (10), which engages through the upper wall of said valve housing (9), for a shank (7), which extends through the outlet duct (8), of the outlet valve (5), wherein the return device has a piston (15), which is attached to the valve shank (7), and a working space (17) which is delimited by said piston (15), is acted on with compressed air and is sealed off from an annular gap (11),; which is present between the mutually facing guide faces of the guide sleeve (10) and valve shank (7), communicates with the outlet duct (8) and can be supplied with oil, by a sealing device which is arranged in the region of the upper, outlet-duct-remote end of the annular gap (11) and has at least one sealing ring (22), according to the invention, it is possible to provide a simple design and a service-free mode of operation in that, above the sealing ring (22), which faces towards the outlet duct (8), of the sealing device, an oil reservoir (24 and 31 and 36) is provided which can be filled with oil and is filled with oil at the upper side, which faces away from the outlet duct (8), of said sealing ring (22).

Description

technical field [0001] The invention relates to a large two-stroke diesel engine comprising at least one cylinder, the combustion chamber of which has an exhaust port controllable by means of an exhaust valve operable by means of an operating device comprising a A propulsion device and a reset device, a valve sleeve is set on the cylinder head of the cylinder, and the valve sleeve includes an exhaust passage connected with the exhaust port of the combustion chamber and a guide sleeve embedded through its upper wall, The guide sleeve is used for the rod of the exhaust valve passing through the exhaust passage, wherein the reset device has a piston mounted on a valve stem and a working chamber defined by the piston that can be fed with compressed air. The annular gap that exists between the mutually facing guide surfaces of the sleeve and the valve stem and communicates with the exhaust passage is provided with at least one seal in the region of the end of the annular gap that i...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): F01L9/02F01L3/08F01L1/46F01L9/10
CPCF01L1/465F01L3/08F01L9/02F01L9/10
Inventor H·A·赫格K·L·勃兰特J·冈拉克
Owner MAN DIESEL & TURBO FILIAL AF MAN DIESEL & TURBO SE TYSKLAND
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com