The influence of hydrogen addition for exhaust gas emission in SI gas engine

Karol Grab-Rogaliński

doi:10.24136/atest.2019.043

Abstract

One of the major problems in internal combustion engines is emission of pollutants with exhaust gases. Those pollutants are not only harmful for environment but also for humans. To decrease emission of pollutants many mechanical and chemical methods are used in internal combustion engines especially in exhaust system such as TWC, DPF, SCR. Alternative way for decrease in exhaust gas pollutants is use of alternative fuel as a primary energy carrier or as an additional fuel for base hydrocarbon one. In this studies the hydrogen was used as a additional fuel to methane. Both fuels were delivered to intake manifold. The share of the fuel was 100/0 methane/hydrogen and 70/30 methane/hydrogen. The addition of hydrogen to base fuel shown decrease of exhaust pollutants from engine and increase in engine operating parameters.

Highlights

One of the problems which is releated with human activity is increase in emission of pollutants
From that reason the goverments of different con-tries as well as EU are very strict with limiation of emission of pollu-tanst
One of the source of those pollutants are means of transport which are equipped with internal combustion engines

Summary

Introduction

One of the problems which is releated with human activity is increase in emission of pollutants. Nowaday for that purpouse there are use three way catatlitic convert-ers (TWC), selective catalitic reactors (SRC) and diesel particalte filter (DPF) The aim of this methodes is to decrease emission of such exhaust gas components as nitrooxides (NOx), carbon dioxide (CO2), carbon monooxide (CO), unburned hydrocarbons (HC). Wider combustion limits allow for combust very lean mixture what has influence on exhaust gas emission Those propertis allow to increase in engine indicated parameters such as efficiency. That can be achieved by use of over-expanded cycle what de-scribe Grab-Rogalinski and Szawaja [4] at theire work Another methode for decreas the maximum temperature of combustion is use of EGR (Exhaust Gas Recirculation), such research was done by Nande et al where he pointed the influence of EGR for reduction of knock combustion and NOx emission [8].

Secound phase

Results and discussion

Conclusions