EXHAUST GAS ANALYZING SYSTEM AND PUMPING DEVICE

摘要

Disclosed is an exhaust gas analyzing system which includes a main flow passage provided with a PM collection filter, a diluted exhaust gas sampling flow passage connected upstream of the PM collection filter of the main flow passage for sampling a part of diluted exhaust gas, a diluted exhaust gas flow rate adjusting mechanism connected downstream of the PM collection filter of the main flow passage, and control equipment altering a setting flow rate of the diluted exhaust gas flow rate adjusting mechanism depending on a flow rate of sampling diluted exhaust gas flowing through the diluted exhaust gas sampling flow passage.

主权项

1. An exhaust gas analyzing system for sampling a part of or a whole of an exhaust gas emitted from an internal combustion engine, diluting the exhaust gas for analysis, and analyzing the resulting gas, the system comprising:
an exhaust gas flow passage through which the exhaust gas flows; a dilution gas flow passage through which dilution gas flows; a main flow passage connected to the exhaust gas flow passage and to the dilution gas flow passage, that flows a diluted exhaust gas resulting from mixing the exhaust gas and the dilution gas with each other, and which is provided with a first analyzing equipment for analyzing the exhaust gas; a diluted exhaust gas sampling flow passage connected to the main flow passage at an upstream side of the first analyzing equipment for sampling a part of the diluted exhaust gas from the main flow passage for introduction to a second analyzer for analyzing the exhaust gas; a diluted exhaust gas flow rate adjusting mechanism connected to the main flow passage at a downstream side of the first analyzing equipment that adjusts a flow rate of the diluted exhaust gas flowing through the main flow passage; and a control equipment that alters a setting flow rate of the diluted exhaust gas flow rate adjusting mechanism on the basis of a sampling flow rate of the diluted exhaust gas flowing through the diluted exhaust gas sampling flow passage.