Basics

This page aims to lay out the various aspects that an Internal Combustion Engine can be “designed for”, and how those variables interlink (In a similar manner to the Design Iron Triangle )
There will also be discussion on useful means of conveying/comparing this information, with note taken to avoid Misleading Graphs etc

Main Variables

Cost
”Complexity”
Reliability
Low End Torque
Upper RPM Limit / Redline
Emissions
”Control” / “Knowledge of what is happening in an engine”
- Harder to word, but essentially No sensors, especially in complex engines/combustion modes etc makes troubleshooting/adjusting various “-timings” difficult. Meanwhile having Triply Redundant Heavily EMI Shielded Voting based sensor systems is COSTLY and potentially complex