Search Results

Automotive components must be designed to withstand vibration for many years of service. This paper reviews a method of developing short duration laboratory tests which can simulate many years or many miles of vehicle service. The general automotive vibration environment and proper data analysis techniques are discussed. Recommendations for developing a test specification from field data and for accelerating a laboratory vibration test are reviewed. General vibration test specifications for both chassis and engine mounted components are presented.

Knowledge learned through the successful application of millions of knock sensors on automotive engines is reported. An explanation of the basic characteristics of the knock phenomena and their relationship to sensing capabilities is given. Popular conceptions and misconceptions concerned with engine knock and the variables affecting it are examined. Sensing methods are described, with the emphasis being on vibration sensitive devices. Application methodologies and issues are discussed, with a review of potential pitfalls in sensor selection, sensor location, and systemization.