Translation of "Unverbrannte kohlenwasserstoffe" in English

The main pollutant components during the cold-start phase are unburned hydrocarbons.

The main pollutants are carbon monoxide, nitrogen oxides and unburned hydrocarbons.

If post injection is too late, only unburned hydrocarbons are generated.

Preferably, the NOx accumulator stores NOx and oxidizes unburned hydrocarbons.

For example, an oxidation catalytic converter is used to react unburnt hydrocarbons with residual oxygen.

In particular, the carbon monoxide emitted and partially burnt or unburnt hydrocarbons are limited.

Smoke that contains unburned hydrocarbons is mainly caused by insufficient air or poor air-fuel mixing.

The exhaust gases from diesel engines contain carbon monoxide, unburnt hydrocarbons, nitrogen oxides and particles of soot as air pollutants.

This reduction is efficient in particular only whenever still uncombusted hydrocarbons enter the catalytic converter.

The pollutants are, in particular, unburnt hydrocarbons, carbon monoxide and oxides of nitrogen.

In this case CO and non-combusted hydrocarbons are oxidized on the oxidation catalytic converter 2 a and NO converted to NO 2 .

The relevant pollutants are nitrogen oxides, carbon monoxide, residual unburnt hydrocarbons and, for liquid fuels, soot.

Currently, Volume II of Annex 16 to the Convention on International Civil Aviation lays down international certification standards targeting 4 categories of aircraft engine emissions: smoke, unburned hydrocarbons (HC), carbon monoxide (CO) and nitrogen oxides (NOx).

In addition, a substantial reduction of the emission of pollutants such as unburned hydrocarbons and nitrogen oxides in the course of the reaction during the combustion is achieved.

Furthermore, the amounts which have to be added to achieve an effect are relatively high, for example 0.2% by volume or more, so that uncombusted hydrocarbons can occur in the exhaust gas.

The first-mentioned pollutants--unburned hydrocarbons, carbon monoxide and nitrogen oxides--are converted on a multi-functional catalyst into carbon dioxide, water vapor and nitrogen.

The three-way catalytic converter reduces nitrogen oxides to nitrogen and oxygen, oxidizes carbon monoxide to carbon dioxide and oxidizes unburnt hydrocarbons to carbon dioxide and water.

The exhaust gases from internal combustion engines contain carbon monoxide CO, unburned hydrocarbons HC, nitrogen oxides NOx, and particles.

In this connection, the burner is advantageously operated so that the hot gas produced has a desorption-promoting composition, i.e. it contains little or no oxygen, but unburned hydrocarbons.

The walls of the flow channels of these so-called honeycombs are provided with catalytically active coatings which convert harmful substances such as carbon monoxide, unburned hydrocarbons and nitric oxides contained in the exhaust gas of the combustion engine into carbon dioxide with a high degree of efficiency.

The exhaust gas from internal combustion engines contains essentially three harmful substances; namely, carbon monoxide, unburnt hydrocarbons and nitrogen oxides.

The exhaust gas of diesel engines contains carbon monoxide (CO), unburned hydrocarbons (HC), nitrogen oxides (NO x), sulfur dioxide (SO 2) and carbon black particles as atmospheric pollutants.

As a result, unburned hydrocarbons are fed to a catalytic converter arranged upstream of the particulate filter.

Normally, in present-day motor vehicles, a three-way catalytic converter is used, through the use of which carbon monoxide (CO), unburned hydrocarbons (HC) and nitrogen oxides (NOx) are converted into harmless constituents.

It is therefore necessary, specifically depending on the operating conditions, to additionally inject unburned hydrocarbons at intervals into the exhaust tract 5 upstream of the NOx accumulator 4 .

In the case of a reduced exothermal reaction in the catalytic converter 2, unburned hydrocarbons may, under some circumstances, not react completely with NOx stored in the NOx accumulator 7 and may leave the NOx accumulator 7 in an unburned state. Therefore, the NOx accumulator 7 is provided with a three-way catalyst coating, as an integral unit.

Basically with an Otto motor three pollutant components are to be named: carbon monoxide, unburned hydrocarbons as well as nitrogen oxide, hereinafter also indicated as CO, HC and NO x respectively.