Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Intake system for internal-combustion engine of hand-hold work tool

A technology of an air intake system and an internal combustion engine, applied in the field of air intake system

Active Publication Date: 2008-04-09
ANDREAS STIHL AG & CO KG
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, balancing is not possible when the pressure in the air filter chamber fluctuates, so that the fuel / air mixture cannot be optimally adjusted

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
  • Intake system for internal-combustion engine of hand-hold work tool
  • Intake system for internal-combustion engine of hand-hold work tool
  • Intake system for internal-combustion engine of hand-hold work tool

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] FIG. 1 schematically shows an exemplary embodiment of the air supply system according to the invention of a hand-held power tool not shown in detail, such as a chainsaw, cutter, suction / blowing tool, etc. FIG. The air intake system shown is used to prepare the combustion air indicated by the arrow 1 for a not shown internal combustion engine for driving a hand-held power tool, and includes a carburetor 2, an air filter upstream of the carburetor 2 Cleaner 3 and a filter box 4 that surrounds air cleaner 3 outside. A vibration gap 32 is formed between the carburetor 2 , which is rigidly mounted on the power tool, and the elastically mounted internal combustion engine, and an elastic coupling 31 is provided for bridging this gap to connect the carburetor 2 to the internal combustion engine.

[0023]The part of the intake system shown is a cooling air fan 7 for cooling the internal combustion engine, in which a combustion air channel 5 leads from an extraction opening 6 in ...

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

Intake system for supplying combustion air (1) to an internal combustion engine of a hand-held machine tool comprises a compressor (2), and an air filter (3) surrounded by a filter case (4). A combustion air channel (5) leads from a discharge opening (6) in a cooling air fan (7) of the engine to an opening (24) in the filter box. The filter box has at least one defined ventilation opening (8, 28) for connecting an inner chamber (9) of the filter box to the ambient air. The flow cross-section of the ventilation opening is designed so that the air flows through the opening, the intake opening (18) of the compressor and the ventilation opening are balanced at nominal engine speed and a uniform pressure level is set in the inner chamber of the filter box.

Description

technical field [0001] The invention relates to an air intake system for preparing combustion air for an internal combustion engine of a hand-held power tool. Background technique [0002] In hand-held working tools driven by an internal combustion engine, such as chainsaws, cutters, suction / blowers, etc., there is an air intake system for preparing fuel air for the internal combustion engine, in which a carburetor is arranged, which has a front An air filter and a filter box that surrounds the air filter from the outside. The combustion air flow of the internal combustion engine is then sucked in from the interior of the filter box via the carburetor and the upstream air filter. In the known arrangement, a combustion air duct is provided which leads from an intake opening in a cooling air fan of the internal combustion engine to the filter box. Combustion air is diverted from the cooling air flow driven by the cooling air blower by means of the suction holes and is prepar...

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
Patent Type & Authority Patents(China)
IPC IPC(8): F02M35/06F02M35/108F02B33/00F02B63/02
CPCF02B63/02Y10S55/28F02M35/06
Inventor G·迈尔F·基泽维特A·贝纳R·图克尔曼A·克利梅克
Owner ANDREAS STIHL AG & CO KG
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap 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