2 SUMMARY OF WORKSHOP PRESENTATIONS
As noted above, workshop speakers included representatives from an engine
manufacturer, a truck manufacturer, and equipment suppliers (see Appendix A). These speakers
reviewed the state of the art, trends, and future R&D requirements from the perspective of
industry. In the following subsections, these presentations are summarized relative to
industry/customer needs, trends, and future R&D requirements.
2.1 HEAVY-DUTY DIESEL-ENGINE MANUFACTURER
From the customer standpoint, the target is to reduce owning and operating costs. From
the national standpoint, the target is to reduce emissions. Thus, the overall goal is to improve fuel
economy while reducing emissions.
Current customer needs, relative to the engine, are (a) improved reliability/durability,
(b) improved fuel economy, (c) reduced maintenance, (d) improved serviceability, (e) improved
productivity, (f) more diagnostics, (g) driver-friendliness, and (h) emissions compliance.
An idealized approach to engine and truck development would (a) combine multi-
dimensional analysis with smart testing; (b) perform baseline tests to validate the analytical tools;
(c) apply the analysis tools to optimize and develop the engine, truck, and components in a
virtual environment; and (d) perform a final validation test.
Future needs will include (a) deep integration of the engine, vehicle, and cooling system;
(b) advanced, selectively cooled engines; (c) long-life, environmentally friendly coolants;
(d) compact heat exchangers; (e) high-performance fans; and (f) sophisticated modeling tools.
2.2 CLASS 7-8 TRUCK MANUFACTURER
The wants and needs of the customer, public, engine OEMs, and truck OEMs, are many
Customers want higher-horsepower engines (the average now is 435 hp and
growing), improved driver visibility (lower hood profile), and aerodynamic
The public wants reduced emissions and less vehicle noise.