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Engine block of a diesel engine with integrated cylinder head, and casting method

一种发动机缸体、柴油发动机的技术，应用在机的发动机缸体领域，能够解决损毁、耗费时间、构型受限等问题

Active Publication Date: 2016-09-07
STEYR POWER OPERATIONS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such inserts are time consuming, limited in configuration and can be damaged during demolding of the casting

Method used

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  • Engine block of a diesel engine with integrated cylinder head, and casting method
  • Engine block of a diesel engine with integrated cylinder head, and casting method
  • Engine block of a diesel engine with integrated cylinder head, and casting method

Examples

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Embodiment Construction

[0025] Referring to Fig. 1, the problem to be solved by the present invention is first described according to the prior art. An engine block 1 with in-line cylinders is integrally cast with a cover portion 2 . The cylinder wall 3 surrounds the combustion chamber 5 and is completely surrounded on all sides by cooling chambers which are circulated by a cooling fluid, usually water. In the casting mold, the cooling chamber is realized by the sand core. They are formed in specific moulds. In order to enable the core to be pulled out from the mold intact, a certain angle of forging slope is required, and the thinner (more brittle) the core, the larger the angle of the forging slope. The cores are especially thinner in the gap 6 between the cylinder walls 3 of adjacent cylinders. Due to the swaging inclination, the thickness of the gap 6 increases continuously from bottom to top up to the cylinder head 4 and the thickness of the cylinder wall 3 decreases continuously. As a resul...

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PUM

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Abstract

The invention relates to an engine block for a diesel engine with multiple cylinders in a series arrangement, said engine block being integrally cast with the cylinder head. The engine block has an outer wall (21) and a respective cylinder wall (13) with a first cooling chamber (22) for a liquid coolant between the outer wall and the cylinder wall, and the engine block has a second cooling chamber (25) over a cylinder head (14). The cylinder head (14) has openings (15, 16) for gas exchange valves, and the first cooling chamber (22) encloses all of the cylinder walls (13). The aim of the invention is to reinforce and optimally cool the vulnerable zone at the transition from the cylinder wall (13) to the cylinder base (14). According to the invention, the first cooling chamber (22) forms a gap (23) between the cylinder walls (13) of adjacent cylinders, the width (35) of said gap being constant or increasing from top to bottom, and the gap (23) surrounds the first cooling chamber (22) of the cylinder wall (13) and fully extends to the upper part of the cylinder head (14).

Description

technical field [0001] The invention relates to an engine block for a diesel engine having an integrally formed cylinder head, having a plurality of in-line cylinders, having an outer wall and each cylinder wall and a first cooling chamber for liquid coolant therebetween and having A second cooling chamber above the cylinder head with openings for the gas exchange valves, wherein the first cooling chamber completely surrounds the entire cylinder and extends upwards above the cylinder head. [0002] This type of structure is also called "Monoblock". This structure avoids the disadvantages associated with a separate cylinder head: the connection of the cylinder head to the engine block by bolts and the sealing of the cylinder head. This structure is thus particularly suitable for high power density diesel engines. The high power density causes high pressure and requires intensive cooling by liquid coolant, especially around the cylinder head. However, this type of structure p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02F1/00B22C9/10F01P3/14F01P3/16F02F1/10F02F1/40F01P3/02
CPCB22C9/10F02F1/002F02F1/108F02F1/40F01P2003/028F02F1/242B22D15/02B22C15/02F01P3/02F01P3/14F01P3/16F02B9/02F02F1/14F02F2001/104
Inventor 鲁道夫·曼多夫迈克尔·阿沙伯约瑟夫·瓦格纳
Owner STEYR POWER OPERATIONS CO LTD
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