Search Results

Perplex and difficult of solution are many of the new administrative problems which appear in the marketing of commercial cars. This is particularly true on account of the transition taking place in the industry, from the manufacture of pleasure cars to the production and application of the commercial type to economic service, and administrations are suddenly confronted with realization of the necessity for entirely different methods of operation, if not a completely different fabric of organization. The characteristics of the commercial line are in radical contrast with the pleasure car business, the inception and purpose of the one being so different from the other as to render obsolete many of the formulated practices heretofore in vogue, conspicuous among which is a too complete reliance upon the individualistic function performed by the salesman.

Motor vehicle standards in Japan was systematically established in 1951 for the first time. On the other hand, in Europe, the United States and Australia, etc., there are EEC directive, FMVSS and ADR, etc. However, it is desirable to harmonize these standards as harmonization of motor vehicle standards will contribute to the improvement of productivity for motor vehicle development and manufacture. As for the international harmonization, ECE WP29 has been playing a key role. Therefore, Japan has positively supported the standard harmonizing activities of ECE WP29. We must promote the international harmonization in co-operation with ECE WP29.

An all-ceramic swirl chamber has been developed and analyses and evaluations concerning the strength of silicon nitride ceramic (Si3N4) have been performed with a view to using it for the entire internal wall surface of the swirl chamber. The strength characteristics of Si3N4 and their effect and variation have been determined. On the basis of measurements and analyses of thermal stresses, assembling stresses, etc., investigation of the most suitable construction and assembling methods to reduce load stresses on ceramic, and various kinds of duration tests, the swirl chamber has been confirmed to have the required durability. This engine was found to comply with the 1987 U.S. diesel particulate regulation.

For the purpose of satisfying today's market demands, new 8 and 11 liter diesel engines, named "STORM" series, have been developed and moved into production in 1986. Based on the predecessors which have been produced since 1975, the development of the STORM series aimed high performance, low emission, long life-time and low operating costs. In order to consult customers' convenience, exchangeability of engine parts and commonality of vehicle installations with the former engines had to be maintained. This paper describes the development work of STORM engines, and the design aspects and performance characteristics of these engines.