Lean Burn Performance of a Natural Gas Fuelled, Port Injected, Spark Ignition Engine

Payman Abbasi Atibeh; Peter A. Dennis; Pedro J. Orbaiz; Michael J. Brear; Harry C. Watson

doi:10.4271/2012-01-0822

This paper presents a study of the performance of a lean burn, natural gas-fuelled, naturally aspirated, spark ignition engine for an E class vehicle. Engine performance and exhaust emissions (NO, CO, and UHC) data are first discussed. An energy balance of the engine operating at different loads and air-fuel ratios is then presented, and used to explain why engine efficiency varies with air-fuel ratio. Finally, the hot start drive cycle CO_2e (CO₂ equivalent) emissions are estimated for a vehicle with this engine. This shows a potential for significant reduction in vehicle greenhouse gas emissions compared to an equivalent gasoline-fuelled vehicle.

Standards

SAE Mobilus®

Publications

News

Events

Professional Development

A World in Motion (PreK-12)

Participate with SAE

SAE Membership

Donate

Lean Burn Performance of a Natural Gas Fuelled, Port Injected, Spark Ignition Engine 2012-01-0822

SAE MOBILUS