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Reciprocating internal-combustion engine with direct fuel injection by means of an injector arranged on the intake side

一种内燃机、往复式的技术，应用在内燃活塞发动机、燃烧发动机、机器/发动机等方向，能够解决增加壁热损失、刺耳燃烧噪音等问题，达到减少不发火、减少烟尘的形成、提高燃烧稳定性的效果

Inactive Publication Date: 2006-12-20
HYUNDAI MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] With this approach, the vigorous charge movement necessary in stratified charge operation is adversely affected during homogeneous combustion operation by causing harsh combustion noise and increasing wall heat loss

Method used

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  • Reciprocating internal-combustion engine with direct fuel injection by means of an injector arranged on the intake side
  • Reciprocating internal-combustion engine with direct fuel injection by means of an injector arranged on the intake side
  • Reciprocating internal-combustion engine with direct fuel injection by means of an injector arranged on the intake side

Examples

Experimental program
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Embodiment Construction

[0025] figure 1 The illustrated cylinder 1 of the reciprocating internal combustion engine is provided with a cylinder head 2 having two obliquely extending intake openings 3 and two exhaust openings 4 arranged substantially mirror-symmetrically to the intake openings. From figure 1 As can be seen in a vertical section, both the intake port 3 and the exhaust port 4 are located in the cylinder head 2 so that they open into the cylinder chamber 1.1 at an angle of less than 45° (measured relative to the cylinder head plane 2.1). The intake port 3 can be opened and closed by the corresponding intake valve 6 , and the exhaust port 4 can be opened and closed by the corresponding exhaust valve 7 .

[0026] The fuel nozzles 8 are arranged in the cylinder head 2 in the region of the intake valves 6 and may be part of a high-pressure direct fuel injection system of common rail technology. In the exemplary embodiment shown here with two intake ports 3 , the fuel nozzle 8 is arranged be...

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Abstract

A internal-combustion engine having at least two intake ports (3) at least one exhaust gas port (4) and at least one ignition device (14) per cylinder (1), and having a combustion chamber (1.1) into which combustion chamber the intake ports open at a flat angle. The piston crown (11.1) and the cylinder cover (2.1) are substantially roof-shaped in vertical section. A fuel injection nozzle (8) opens into the cylinder (1) near the inlet region of the intake ports (3) between the intake valves (6), wherein, measured in relation to the cylinder axis, (5) the angle of the jet axis (9) of the fuel injection nozzle (8) is greater than the angle of the intake ports (3). An ignition device (14) is arranged in the cylinder cover(2.1) close to the cylinder axis (5). A through-shaped recess (12) is provided in the piston crown (11.1) bounded by a through base (12.1) and side walls (16) and inter-sects the roof ridge (11.2) on the piston crown. The trough base (12.1) being inclined towards the fuel injection nozzle (8) and ending in a wall zone (12.2) extending steeply upwards on its side facing the fuel injection nozzle (8), wherein the transition regio (15) between the through base (12.1) and the side walls (16) has a substantially barrel-shaped contour in plan view.

Description

Background technique [0001] In a reciprocating internal combustion engine with spark ignition and direct fuel injection, fuel is injected directly into the working area of ​​the engine through injectors. There are two basic modes of operation for injection time. [0002] In so-called homogeneous combustion operation, fuel is usually injected into the combustion chamber early during the inflow of combustion air, ie when the intake valve is open. A good homogenization of the fuel / air mixture is thereby achieved. This mode of operation is preferred when the engine is running at high loads. [0003] In so-called stratified charge operation, injection does not take place until after the intake valve is closed, when the piston enters the region of its top dead center position during its upward movement. This is to allow the fuel to mix only in a locally defined manner with some of the fresh air contained in the cylinder before being ignited by the ignition. This operating mode i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02B23/10F02B17/00F02B31/08F02B75/12
CPCF02B23/105F02B17/005F02B31/085F02B2023/106F02B2075/125F02B2275/48Y02T10/123Y02T10/125Y02T10/12F02B23/10F02B17/00
Inventor 约尔格·巴劳夫乔斯·吉格马丁·温特
Owner HYUNDAI MOTOR CO LTD
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