1994-03-01

Computer Controlled Sampling and Inlet System for Time-Resolved, Engine-Synchronous Exhaust Gas Analysis 940964

The increased pollution of the air by engine vehicles has led most highly industrialized countries to reduce the limits on the emission of pollutants by combustion engines [1]. In order to evaluate the various measures for the reduction of pollutants [2, 3, 4, 5, 6, 7, 8], exhaust gas analysis systems with ever increasing performance are required [9, 10, 11]. The Sampling and Inlet System (SIS) presented here can resolve up to 100 gas samples per second with regard to time and make available associated with crankshaft angles to within 2°. In conjunction with a fast mass analyzer, the contents of exhaust gas can be determined in real time and on-line or with the use of an exhaust gas collection device, analyzed off-line without loss of time resolution. The system thereby makes an essential contribution to the expansion of dynamic exhaust gas analysis.

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