# Secondary air injection

> vehicle emissions control strategy

**Wikidata**: [Q441828](https://www.wikidata.org/wiki/Q441828)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Secondary_air_injection)  
**Source**: https://4ort.xyz/entity/secondary-air-injection


## References

1. Freebase Data Dumps. 2013
2. [OpenAlex](https://docs.openalex.org/download-snapshot/snapshot-data-format)