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

Aluminum alloy for engine blocks

A technology of engine body and aluminum alloy, which is applied in the field of aluminum alloy and can solve the problems of increasing product cost and so on

Active Publication Date: 2008-09-03
GENERAL MOTORS CORP
View PDF7 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These modifications of the cylinder block will increase the cost of the product

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
  • Aluminum alloy for engine blocks
  • Aluminum alloy for engine blocks

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] Description of the preferred embodiment

[0016] The present invention is an aluminum alloy composition that satisfies the aforementioned manufacturing and performance conditions for cylinder block castings. The invention is particularly applicable to cylinder block castings for internal combustion engines having reciprocating pistons using gasoline fuel. This alloy can be cast by any conventional casting method to produce low-porosity, high-strength, wear-resistant engine blocks without special heat treatment and other special processes.

[0017] figure 1 A cylinder block casting 10 that can be cast from the aluminum alloy of the present invention is described. In this embodiment, casting 10 is a V-6 engine block, but the alloy of the present invention may be used to cast any type of engine block where wear resistance is desired in the cylinder bores and other surfaces of the cast product.

[0018] Three cylinders 12 , 14 and 16 on a branch 18 of a V-shaped engine b...

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

PropertyMeasurementUnit
tensile strengthaaaaaaaaaa
Login to View More

Abstract

An aluminum alloy is disclosed that is suitable for casting and machining cylinder blocks for engines, especially gasoline fuel engines for automotive vehicles. The casting has the strength and wear resistance to piston / seal scuffing for such engines. The alloy comprises, by weight, 9.5 to 12.5% silicon, 0.1 to 1.5% iron, 1.5 to 4.5% copper, 0.2 to 3% manganese, 0.1 to 0.6% magnesium, 2.0% max zinc, 0 to 1.5% nickel, 0.25% maximum titanium, up to 0.05% strontium and the balance aluminum, where the weight ratio of manganese to iron is 1.2 to 1.75 or higher when the iron content is equal to or greater than 0.4% and the weight ratio of manganese to iron is at least 0.6 to 1.2 when the iron content is less than 0.4% of the alloy.

Description

technical field [0001] The present invention relates to an aluminum alloy which can be cast into machinable and wear-resistant articles, such as engine cylinder blocks for motor vehicles. Background of the invention [0002] The use of aluminum for motor and engine blocks offers the possibility of significantly reducing vehicle weight and saving fuel. However, after decades of effort, an aluminum alloy that simultaneously provides the castability, machinability, and wear resistance required to manufacture and maintain cylinder blocks has not been developed and defined. Aluminum alloys that are resistant to piston wear are difficult to cast into cylinder blocks of complex shapes and difficult to machine to final required dimensions. Aluminum alloys suitable for casting and machining into cylinder blocks lack the wear resistance of cylinder walls in use. Engine manufacturers tend to choose castable and machinable alloys and modify the cylinder wall surface to obtain the requ...

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): C22C21/02C22C21/04
CPCC22C21/04
Inventor H·W·多蒂
Owner GENERAL MOTORS CORP
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