Heat Engines

Heat engines differ considerably from one another but all can be characterized by following step:
1. They receive heat from high temperature source solar
2. They convert part of this heat to work(ussually in a form)
3. They reject the remaining waste heat to a low temperature sink(the river/atmosphere)
4. They operate in a cycle

Heat engine and other cyclic devices ussually involve a fluid to and from heat is transferred while undergoing a cycle. this fluid is called the working fluid.

Acura TSX 2009

The Acura TSX is completely redesigned for 2009. Major changes include a larger size for enhanced interior room, revised exterior styling and new technology-oriented features.
Acura’s flagship sedan, has more aggressive styling this year and a more powerful engine:
a 300-horsepower, 3.7-liter V-6 that develops 271 foot-pounds of torque. The new RL has a roomier back seat than its predecessor did, and suspension and tires are upgraded.
The 2009 Acura TSX is a compact entry level luxury sedan available in one well loaded trim level.

Career in Engineering Consultancy

When we talk about a career in Engineering Consultancy, it can be can be a challenging experience, Being a great consultant requires good communication skill, Managerial skills are essential as each job will require appointing teams to work on the project and managing contractors. Some projects for example could involve designing, testing and constructing a geothermal power plant.

Lapping

Lapping is an abrading process used to remove minute amounts of metal from a surface that must be flat accurate to sizee and smooth. lapping may be performed for any of following reasons:

1. To increase the wear life of a part

2. To improve accuracy and surface finish

3. To improve surface flatness

4. To provide better seals and eliminate theneed for gaskets

Lapping maybe performed by hand or machine, depending on nature of the job. Lapping is intended to remove only about 0,0005 in or 0,01 mm of material.

Types of laps
Laps may be used to finis flat surfaces holes or the out side of cylinder in each case the lap material must be softer than workpiece.

Broaching

Broaching is a process in which a special tapered multi toched cutter is forced trough an opening or along the outside of a piece of work to enlarge or change the shape or the hole to form the outside to a desired shape.
Broaching was first used for producing internal shapes, such as keyways, splines and other odd internal shapes. Its application has been extended to enterior surfaces, such as the flat face on automotive engine blocks and cylinder head.

Broaching has many advantage and an extremly wide range of applications:
1. Machining almost any irregular shape is possible providing it is parrarel to the broach axis
2. It is rapid (not rapidshare ;) ) the entire machining process is ussually completed in one pass
3. Roughing and finishing cuts are genearlly combined in the same operatin.
4. A variety of forms, either internal, external may be cut simultaneously and the entire width of a surface may be machined in one pass, thus eliminating the need for a machining operation.