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Two-stroke Engine With Fuel Injection

一种燃料喷射装置、发动机的技术，应用在燃烧发动机、低压燃料喷射、燃料喷射装置等方向，能够解决削弱兼容性、制造成本增加、增加发动机复杂性和尺寸等问题

Inactive Publication Date: 2015-07-01
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, according to the invention disclosed in JP04-237815A, in addition to the pump, special passages are required in the engine, inevitably increasing the complexity and size of the engine
With the inventions disclosed in JP61-101655A and JP03-026820A, the piston needs to have a skirt in which the opening is formed, resulting in impaired compatibility and increased manufacturing costs

Method used

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  • Two-stroke Engine With Fuel Injection
  • Two-stroke Engine With Fuel Injection
  • Two-stroke Engine With Fuel Injection

Examples

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Embodiment Construction

[0024] will be referred to below Figure 1 to Figure 5 A first embodiment of the present invention constituted by a one-cylinder two-stroke engine (engine E1 ) of the unidirectional flow type is described.

[0025] refer to figure 1 and figure 2 , an engine body 1 of an engine E1 is provided with a crankcase 2 defining a crank chamber 2a therein, a cylinder block 3 connected to an upper end of the crankcase 2 and defining a cylinder bore 3a therein, a cylinder head 4 connected to an upper end of the cylinder block 3 and a cylinder head cover 5 attached to the upper end of the cylinder head 4 to define an upper valve chamber 6 in cooperation with the cylinder head 4 .

[0026] Such as figure 2 As best shown, the crankcase 2 consists of two crankcase halves 7 having a parting plane extending perpendicular to the crankshaft axis 8X and joined to each other by seven bolts 9 ( figure 1 and image 3 ). Each crankcase half 7 comprises a side wall 7S provided with an opening t...

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Abstract

In a two-stroke engine including a scavenging port (43b) having an open end (42d) opening out in a side wall of the cylinder bore (3a) and communicating with a crank chamber (2a), the open end being configured to be closed and opened by the piston (22), a fuel injection device (71) is mounted on the engine main body so as to inject fuel onto a back side of the piston and / or a part of the side wall of the cylinder bore located under the piston via the open end of the scavenging port or via the open lower end of the cylinder bore. The fuel deposited on the surfaces of the piston and the cylinder inner wall promotes the cooling of such parts.

Description

technical field [0001] The invention relates to a two-stroke engine, in particular to a two-stroke engine with fuel injection. Background technique [0002] In the field of general-purpose engines, two-stroke engines are often preferred over four-stroke engines because of their simplicity. Two-stroke engines are often not provided with any lubrication system, the required lubrication is achieved by using a fuel mixture containing lubricating oil. When fuel is supplied to the crankcase before being transferred to the combustion chambers, various rotating parts and sliding surfaces are lubricated. Lubricating oils are also known to be useful in removing heat from various moving parts. However, since the quantity of lubricating oil supplied in this way is very limited, cooling of the piston and cylinder is a major problem in two-stroke engines compared to four-stroke engines equipped with lubricating oil recirculation systems. [0003] It has been proposed to form a passage ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02B25/04F02B31/02F02B75/32F02F1/22F02M61/14
CPCF02B33/04F02B33/44F02M61/14F02B41/00F02B2075/025F02M69/042F02B25/04F02D15/02F02M26/01F02F3/22F01M1/08F01P3/08F05C2201/021F02B3/06
Inventor 仓田真秀山田义和
Owner HONDA MOTOR CO LTD
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