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Motor-driven implement having improved carburettor preheating apparatus

An engine-driven, carburetor chamber technology, used in machines/engines, fuel heat treatment devices, carburetors, etc.

Inactive Publication Date: 2012-06-06
MAKITA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the carburetor chamber is overpressured mainly through the cold air openings of the dust pre-separation device, the problem arises that if an overpressured air is already pressed into the carburetor chamber via the dust pre-separation device, through the Air that is introduced into the carburetor chamber through the hot air opening cannot enter the carburetor chamber

Method used

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  • Motor-driven implement having improved carburettor preheating apparatus
  • Motor-driven implement having improved carburettor preheating apparatus
  • Motor-driven implement having improved carburettor preheating apparatus

Examples

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Embodiment Construction

[0020] exist figure 1 and figure 2 An exemplary embodiment of a motor-driven device 100 is shown, which may be implemented as a chainsaw, hand-held sander, hand-held circular saw, lawn mower, lawn trimmer, or other hand-held tool for garden and landscape maintenance or device. The engine drive 100 has an internal combustion engine 10 which is shown in the region of the cylinders 11 . Further shown is the carburetor 12 arranged in the carburetor compartment 13 , wherein the internal combustion engine 10 with the cylinders 11 is arranged in the engine compartment 15 . The chambers 13 and 15 are formed by a housing 16 and separated from each other by an intermediate wall 14 .

[0021] When the internal combustion engine 10 is driven, the internal combustion engine 10 draws in combustion air via the carburetor 12 , which is obtained from the carburetor chamber 13 . When the engine driving device 100 works at low temperature, for example, in winter, the carburetor 12 will free...

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Abstract

The present invention relates to a motor-driven IMPLEMENT HAVING an IMPROVED CARBURETTOR PREHEATING apparatus, wherein motor-driven implement such as a hand-held tool or device for garden and landscape maintenance, includes an internal combustion engine having at least one cylinder and at least one carburettor, which is disposed in a carburettor chamber, is separated by an intermediate wall from an engine compartment. A housing is provided which at least partially encloses the engine compartment so that an upper part of the cylinder extends in the direction of the housing, and a fan wheel is further provided by which means air from the engine compartment can be introduced through a warm air opening in the intermediate wall into the carburettor chamber. For the motor-driven implement to have an improved carburettor pre-heating which enables easier operation, it is proposed that the warm air opening is disposed in the area of the intermediate wall which is disposed adjacently to the upper part of the cylinder.

Description

technical field [0001] The present invention relates to an engine-driven device, such as a chainsaw, a hand-held sander, a hand-held circular saw, a lawn mower, a lawn trimmer, or other hand-held tools or devices for garden and landscape maintenance, having an internal combustion engine and at least A carburetor, the internal combustion engine having at least one cylinder, the carburetor being arranged in a carburetor compartment separated from the engine compartment by an intermediate wall, wherein a housing is arranged which at least partially encloses the engine compartment , so that the upper part of the cylinder extends in the direction towards the housing, wherein a fan wheel is also provided, by means of which air is introduced from the engine compartment into the carburetor compartment via the hot air opening in the intermediate wall. Background technique [0002] Publication DE 10 2009 008 055 A1 discloses a general engine drive having a carburetor compartment for a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M15/02F02B63/02F01P1/02
CPCF02M31/06F01P2001/026Y02T10/126F01P1/02F02M35/1017F02F1/243F02B63/02F02M15/02F02F1/002F02M35/1019F02M31/14Y02T10/12
Inventor 克里斯汀·维克
Owner MAKITA CORP
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