1967-02-01

Spark Ignition Engine Progress 670199

A review of past development progress, the basic engine design problem, and the design status of today's engine indicates that the continued development of the four cycle, reciprocating piston, spark ignition automobile powerplant means continued improvements and the creation of a more difficult task for possible replacement. The years of development time have resulted in significant improvements in four areas: higher rotative speeds and improved thermal, volumetric, and mechanical efficiencies.
Continued development and refinement of this engine will be stimulated in the future with catalytic development efforts similar to one we are presently experiencing - reduction of exhaust emissions. This effort is discussed in addition to the overhead camshaft valve mechanism and aluminum engines which are also subjects of current development interest.

SAE MOBILUS

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

Access SAE MOBILUS »

Members save up to 18% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

High-Speed Photography and Image Analysis Techniques Applied to Study Droplet Motion within the Porting and Cylinder of a 4-Valve SI Engine

952525

View Details

STANDARD

Power Cylinder Oil Consumption: Transport Mechanisms

J2794_201807

View Details

TECHNICAL PAPER

Investigations on Ventilation Strategies for SI Cylinder Deactivation Based on a Variable Valve Train

2016-01-2346

View Details

X