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VETS-7000 NT

Vehicle Emissions Test System

VETS 7000NT is ideally suited for laboratories requiring a flexible, economical system for certification and routine R&D testing.

  • Communicates with, and coordinates, test-cell equipment for running standard and customized tests.
  • Manages data collection, display, and test-result reporting.
  • Assists with calibration and quality-control checks.
  • Includes flexible editors for user-defined displays, reports, test schedules, and pretest questions.

 

VETS 7000NT is designed to interface with the MEXA and CVS 7000/9000 systems. Offered in English, French, or German, the software is easy to use with logically organized screens, pull-down menus, buttons, and scrolling lists. Users have flexibility in reporting test results using SQL and Excel®. Multiple cells can be networked via LAN for comprehensive data management.

 

 

Applications

  • Automation of test cells with MEXA/CVS 7000 and MEXA/CVS 9000 series systems.
  • Emissions testing of gasoline and diesel fueled vehicles.
  • Certification according to EPA, CARB, Japan and EU Regulations.
  • Development tests requiring real-time analysis of exhaust-emission constituents at various sample points.
  • Emissions verification and component evaluation.

 

Features

  • Flexible and open test-control and evaluation system.
  • Economical standard configurations for a variety of applications.
  • Windows NT operating system using a standard PC.
  • Sophisticated results database.
  • Use of standard software packages: Excel®, ODBC, SQL, National Instruments®, BridgeView®.
  • Use of National Instruments ServerExplorer software for device configuration - allows customer-configuration of test-cell equipment.
  • Reports created using Excel® templates, modifiable for design and calculation changes.
  • Real-time, user-modifiable graphic display, using BridgeView®.
  • Graphical test editor to create or edit test descriptions, drive traces, and shift files.

Multiple languages - English, German, French.

Emissions Testing Functions

Emissions tests consist of four parts: Pretest/initialization, driver's cycle, analysis, and post-test/reporting.

Pretest/Initialization

VETS 7000NT collects information from the operator, reads and displays the Weather Station values, and initializes the CVS, MEXA and CRSD 7000.

Driver´s Cycle

Standard test schedules delivered with the system include:

  • EPA 74
  • EPA 75
  • EPA 75, Phase 1 and 2
  • EPA 75, Phase 1
  • EPA Highway Fuel Economy
  • ECE 15.04
  • ECE 15.05 High Speed
  • Japan 10.15 Mode
  • Japan 11 Mode
  • User-defined tests

Other schedules available upon request.

VETS 7000NT controls the test sequence, collects data, and provides a real-time graphic-numeric display. CRSD 7000 displays the drive trace, shift points, and driver messages. All data is logged and stored as raw values in real-time. Variable delay times can be applied after test completion.

Pre-defined test sequences control test operation. The user selects or defines files to control sample delays, timed events, shift-point table, ambient limits and fuel type.

Analysis

For gasoline and diesel-fueled vehicles, depending on test-cell equipment

  • Bag
  • Modal mass Pre-catalyst, intermediate, tailpipe, dilute
  • Catalyst efficiency
  • Dual-catalyst efficiency
  • EGR
  • Particulates
  • General-purpose analog signals

Bag-read function depends on bench and CVS types. Sequence includes:

  • Select analyzer
  • Sniff in auto-range mode
  • Select range
  • Zero/Span/Zero
  • Read sample bag
  • Read ambient bag
  • Zero/Span drift check (if applicable)
  • Display results
  • Auto measurement of bag-reading stability
  • Flow alarm on bag read
  • All data stored and time stamped
  • Post-test/Reporting

End of test includes setting equipment to Standby and final messages/instructions to the operator.

Reports are in user-definable Microsoft Excel templates. Test request can specify automatic reports. User can manually run additional reports on any data in the database.

Configuration Editors

  • I/O Configuration
  • Driver's Traces
  • Gearshift Tables
  • Test Descriptors
  • Fuel Files
  • Event Tables

 

Calibration/QC Utilities (MEXA 9000/CVS 9000)

  • Analyzer Linearization (Curve Calibration)
  • NOx Converter Efficiency Check
  • CO2 Interference Check
  • Stand-alone Zero/Span Check
  • Stand-alone Bag Read
  • CVS Injection Check

 

 

VETS 7000NT Specifications

Main Components

Computer hardware
Input/output equipment
CRSD-7000 Driver\'s Aid
Application software running under Windows-NT

Computer

Dual Pentium III
Two SCSI Hard Disks
3.5" Floppy disk
CD ROM (readable)
LAN interface for CRSD 7000, MEXA and CVS communication
Second LAN interface for building LAN.
17" color monitor, mouse, and keyboard

Input/Output Equipment

CRSD-Controlled Process I/O:

16 analog inputs
2 analog outputs
8 digital inputs
8 digital outputs
2 frequency (counter) inputs

National Instruments Process I/O:

32 user-definable analog inputs (10 Hz sample rate)
32 programmable digital outputs
32 digital inputs
Option for extended I/O and signal conditioning

Driver\'s Aid

CRSD-7000 Driver\'s Aid exchanges the following data with VETS 7000NT over the LAN interface:

*       Downloading Test-cycle and Shift-point tables

*       Weather Station Values

*       Dynamometer Speed

*       Test Trace Information

*       Driver\'s Valuations

*       Engine Signals

*       Car Fan Control

Standard Equipment Interface

MEXA-7000 via LAN or MEXA 9000 via GP-IB

CVS-7000 via LAN orCVS 9000 via GP-IB

Tunnel and Particulate Sampler (via CVS interface)

Interface for dyno speed via
CRSD-7000

Ambient Conditions

10-35°C, 20-80% RH noncondensing

Dimensions

W x H x D (excluding monitor)

22.4 x 38.6 x 28 in
570 x 980 x 710 mm

Power

100-240V AC, 50/60 H

 

Options

  • Weather Station
  • Extended Process I/O
  • Signal Conditioner
  • Vehicle Signal box Data Interpretation Visualization Analysis ( DIVA) software

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