# Effect of Hydrogen Supplementation on Performance, Knock Behaviour, and Emissions of an SI Engine Operating at Lean Air-fuel Ratios

> 2015 doctoral thesis by Yu Chen at University of Auckland

**Wikidata**: [Q111963617](https://www.wikidata.org/wiki/Q111963617)  
**Source**: https://4ort.xyz/entity/effect-of-hydrogen-supplementation-on-performance-knock-behaviour-and-emissions-of-an-si-engine-operating-at-lean-air-fuel-ratios