Toyota's inspection system for vehicular emissions at assembly lines
In order that all Toyota production vehicles may satisfy the emission requirements and be free from possible defects such as catalytic converter damage, a system called ECAS, which allows us to assure satisfactory basic emission performance levels has been developed and put into actual use at assembly lines. This system consists of the following four tests: Idle Test, Functional Test, Short Cycle Test and Steady State Inspection Test. By using this system, all operations from vehicle setup, on a chassis dynamometer to statistical analysis of the data, measurement, judgement of the obtained data, type-out of the results, indication for action to be taken, data filing and statistical treatment of the data, are processed automatically and controlled by the computer. In the Short Cycle Test the up-stream emissions of the vehicle, tracing Toyota's unique short cyclic mode on a chassis dynamometer, are continuously measured. Based on the emission levels during each mode and the total emission level obtained from the above test we can diagnose, not only the emission control systems of a vehicle and its engine conditions such as valve clearance maladjustment and carburetor defects, but also the emission characteristics of this vehicle.
- OSTI ID:
- 7071653
- Report Number(s):
- CONF-7610176-1
- Resource Relation:
- Conference: Automobile engineering meeting, Dearborn, MI, USA, 18 Oct 1976
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
AUTOMOBILES
CATALYTIC CONVERTERS
EXHAUST GASES
CARBON MONOXIDE
AIR POLLUTION CONTROL
PERFORMANCE TESTING
QUALITY ASSURANCE
HYDROCARBONS
NITROGEN OXIDES
DATA ACQUISITION SYSTEMS
DESIGN
JAPAN
OPERATION
PRODUCTION
TEST FACILITIES
ASIA
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
EQUIPMENT
FLUIDS
GASEOUS WASTES
GASES
NITROGEN COMPOUNDS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
TESTING
VEHICLES
WASTES
330100* - Internal Combustion Engines
330700 - Advanced Propulsion Systems- Emission Control