The phrase refers to the acquisition, without cost, of software designed to simulate the performance of an engine on a dynamometer, but executed on a personal computer. This software allows users to model engine characteristics and predict power output based on various input parameters, such as bore, stroke, compression ratio, and camshaft specifications. For example, a user might input the details of a small-block Chevrolet engine build to estimate its horsepower and torque curves.
The availability of such software, particularly without a licensing fee, democratizes engine development and performance analysis. Historically, engine simulation required access to expensive hardware and specialized facilities. The existence of freely obtainable alternatives grants hobbyists, students, and small-scale engine builders the ability to explore design options, optimize engine configurations, and gain insights into engine behavior without incurring significant financial burdens. This fosters innovation and deeper understanding of internal combustion engine dynamics.
