Measuring and testing – Gas analysis – Gas of combustion
Patent
1998-02-23
2000-09-05
Oen, William
Measuring and testing
Gas analysis
Gas of combustion
G01N 700
Patent
active
061125741
ABSTRACT:
An exhaust gas analyzer for measuring a dry-based concentration and a dry-based flow rate of exhaust gas from a vehicle has a trace gas supply source for providing a trace gas to the vehicle at a supply rate, a flow rate controller for controlling the supply rate of the trace gas, a exhaust gas sampling passage in communication with an exhaust pipe of the vehicle for sampling the exhaust gas from the vehicle, a dehumidifier disposed on the exhaust gas sampling passage, a trace gas detector disposed on the exhaust gas sampling passage for measuring the trace gas, and a gas analyzer disposed on the exhaust gas sampling passage for measuring a component to be measured in the exhaust gas. The trace gas detector and the gas analyzer are disposed downstream from the dehumidifier and in parallel on the exhaust gas sampling passage.
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Adachi Masayuki
Hirano Takashi
Horiba Ltd
Oen William
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