Improved titanium alloys (1)

Tuesday, September 28, 2010
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It is a fact that development of titanium alloys is driven by the substantial needs of the aerospace industry, for improved properties or lower costs. The use of titanium is widespread in aircraft, both military and commercial, and with great emphasi... read more

Sportscar development

Tuesday, September 28, 2010
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The previous article on the subject of KERS was a retrospective look at the hybrid system in the Panoz Q9. In seeking to bring the emerging technology of regenerative braking to racing, Don Panoz was years ahead of the game. There are now very few l... read more

Lead-free bearing materials (continued)

Tuesday, September 28, 2010
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In previous articles about the differences between leaded and lead-free bearing shell materials, several reservations about the latter have been discussed, one of which is the heat transport from oil through the bearing shell to the crankcase, where ... read more
Tags :  bearings

Hertzian stresses

Tuesday, September 28, 2010
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The surface of a camshaft or its associated follower can fail in a number of ways. Adhesive wear leading to abrasive wear, and corrosive wear, are perhaps the most common but another type of wear - surface fatigue - is sometimes perhaps harder to und... read more
Tags :  camshafts

Bore coatings

Tuesday, September 28, 2010
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The contact area between the cylinder bore and the piston and its rings is of critical importance. The material and surface treatments on these components, as well as their design, affect the lubrication, friction and wear - and, as a consequence, ha... read more
Tags :  coatings

Vibrations

Tuesday, September 28, 2010
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Any technical discussion about engine vibration generally revolves around one of two areas, namely the cranktrain and the valvetrain. In terms of the crankshaft, torsional vibrations - or rather their avoidance or mitigation - are a major concern. I... read more
Tags :  con-rods

Split crankshafts

Tuesday, September 28, 2010
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The vast majority of race crankshafts that we see are made from one piece of material and are generally machined from either a billet of wrought steel, a forging or possibly a casting - certainly in the case of multi-cylinder engines this is the norm... read more
Tags :  crankshafts

Twin injector blending

Tuesday, September 28, 2010
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Most of the time many of us are quite happy with just one injector per cylinder. The complexity of EFi arrangements and the software necessary to control an engine under the wide range of anticipated conditions are complex enough without going lookin... read more
Tags :  electronics

Lessons in liners

Tuesday, September 28, 2010
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As engineers we all have a lot to learn, and no matter how long we have been in the business, I am sure there is no-one out there who will not claim to be learning still. Take this lesson from the history books for instance. For many years it has be... read more
Tags :  engine-structure
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