Technical Session - 7

Title:           A Study on Performance, Combustion & Emission Characteristics of Simulated Biogas Engine
Authors:      Huynh Thanh Cong, Nguyen Quoc Khanh
Abstract:    With the purpose to use biogas in an internal combustion engine with high compression ratio and in order to get a high output performance, this investigation used a stationary diesel engine model with maximum output power 10.3kW to simulating in AVL Boost Software. In this model, the engine was converted to spark ignition mode to use it with simulated biogas. The change of CH4 between 50% and 80% with 5% step. The compression ratio was at 18:1. This simulation using Vibe 2-zone model combustion, in full load conditions the start of combustion at 7 degrees BTDC and the air ratio . After simulation, the maximum output power of the engine decreased by 7.7% when using 80%CH4 – 20%CO2 and 63.1% when using 50%CH4 – 50%CO2. Emissions of nitrogen oxides, carbon monoxide decrease when using simulated biogas.

Keywords:    High compression ratio SI engines, simulated biogas, CNG, combustible mixture, Engine performance, Biogas enrichment with methane.
Pages:         355-360

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