Investigation of the influence of hydrogen used in internal combustion engines on exhaust emission

Abstract

This article deals with the possibility to use hydrogen in gasoline and diesel engines. Hydrogen production in a vehicle and hydrogen generators mounted in a vehicle are overviewed. Under operation of the hydrogen generator electrical current changes with temperature, to stabilize current the current pulse generator is used. Modifications of an intake manifold were made in order to supply hydrogen to an engine. For this purpose a special universal plate to evenly mix the hydrogen with fuel mix was made designed. The experimental and rig tests were performed. The rig tests were carried out at constant 2200 rpm. It was found that smokiness, in both cases decreases with an additional deployment of hydrogen. Other indicators of the exhaust gas using the hydrogen in case of the rig tests are worse. A possible cause of negative influence is an excessive amount of hydrogen, which releases at 25 A current.