A process for the assessment of the exhaust gas limit value injuries and for the evaluation of the quality of relevant components in the case of low emitting motor vehicles during the journey

摘要

The cold start phase is used to assess effectiveness of relevant equipment. An analyzer determined gas concentrations, e.g. of hydrocarbon, carbon monoxide and nitrous oxide. The values obtained, maximum concentration, duration of cold start phase, instant of maximum emission and time integrals of cold start emissions were used to assess emission characteristics of the vehicle. Independent claims based on these principles are included, covering in further detail: a retro-fitted modular test unit for a vehicle; an adsorption system following the catalyst, for peak loadings; a method of reducing excessive emission; an emission monitoring system for aircraft, ships and diesel locomotives. Preferred features: In a similar method, during quality control, the cold start phase is executed repeatedly. Measurements are stored in the vehicle. Satisfactory results are compared subsequently with later values, and a warning is given if necessary. Oxygen in the exhaust may be measured during travel. Relevant faults are simulated and the profile of characteristics is measured over time. Further details of the equipment and approach are included.