Ceramic Tappet Shim for Six-Cylinder Engine 932870

In this paper we describe the development of a hybridized tappet which involves a ceramic shim which is in direct contact with the camshaft. After a quick description of the component's implantation and design, we will focus on the problem of choosing the ceramic material.
All the qualification tests performed to validate this application will then be described.
The work that has been performed to enhance durability and reliability of the ceramic part will then be pointed out.
The goal of the study was to develop a ceramic tappet which would allow, by withstanding higher loads, an increase of the ZPJ4 engine reliability. The decision was taken, on the first of October 1991, to apply the hybridized tappet to the top-of-the-range Peugeot 605 and Citroën XM cars.


Subscribers can view annotate, and download all of SAE's content. Learn More »


Members save up to 40% off list price.
Login to see discount.
Special Offer: With TechSelect, you decide what SAE Technical Papers you need, when you need them, and how much you want to pay.