BAR 97 Transition Class ADVANCED TRANSPORTATION TECHNOLOGY CENTER INSTRUCTOR - PETE SPARKS
WHAT’S THE LATEST? II WWW.SMOGCHECK.CA.GOV
WHAT IT WAS IN 1997 Smog Check II Program Areas 1997
WHAT IT IS CURRENTLY Smog Check II Program Areas 2005
BAR 97 Transition Class COURSE REQUIREMENTS • 8 Hours mandatory class on new theories • Additional 20 hour course also required (BAR97U) • 17 of 25 correct on final to qualify • Results scored by instructor & recorded by BAR • Everyone must run one ASM mode test
II BAR 97 TRANSITION COURSE OUTLINE I. ASM DYNAMOMETER OPERATION & TESTING II. 5 GAS EMISSIONS--NOx III. BAR 97 TEST PROCEDURES IV. INSTRUCTOR DEMONSTRATIONS V. STUDENT LAB ASSIGNMENT VI. REVIEW OF BASIC DIAGNOSTIC PROCEDURES VII. CUSTOMER AWARENESS VIII. FINAL EXAMINATION--17 OF 25 TO PASS
ASM DYNAMOMETEROPERATION & TESTING • ASM STANDS FOR • ACCELERATIONSIMULATIONMODE • ASM emission test equipment tests the vehicle at two constant speeds and load levels • 50% load at 15 mph (known as the 50/15 test) • 25% load at 25 mph (known as the 25/25 test) • High constant load at a relatively low speed “simulates” acceleration.
5 GAS EXHAUST EMISSIONS NOx • High NOx levels increase greatly when combustion temperatures exceed • 2500o F.
5 GAS EXHAUST EMISSIONS NOx NOx levels increase as a LOAD is applied to the engine.
5 GAS EXHAUST EMISSIONS NOx • NOx relationship to air/fuel ratio (see attached material): • Rich mixture (less than 14.7:1): NOx levels are low, CO and HC are high. • Stoichiometric mixture (14.7:1): HC & CO levels are acceptable, and NOx can be controlled. • Lean Mixture (more than 14.7:1): NOx levels increase until just before 16:1 then decreases sharply due to a • LEAN MISFIRE • which cools the cylinder with unburned fuel, • (CO decreases and HC increases)
STOICHIOMETRIC CHART NOx CO2 CO O2 HC RICH 10:1 14.7:1 20:1 LEAN
5 GAS EXHAUST EMISSIONS CATALYTIC CONVERTER EFFICIENCY • Proper 3-way catalytic converter operation requires a • STOICHIOMETRIC air/fuel ratio.
5 GAS EXHAUST EMISSIONS CATALYTIC CONVERTER EFFICIENCY • Rich mixture: Converter cannot efficiently control CO and HC, NOx is controlled by excessive fueling (cools combustion temperature). • Lean Mixture: Converter cannot efficiently control NOx , Converter can control CO & HC.
BAR 97 TEST PROCEDURES GENERAL PROCEDURES: NOTE: Exact BAR 97 EIS prompts and procedures will vary by equipment manufacturer and software versions. Always follow manufacturer’s procedures and instructions when performing actual tests.
BAR 97 TEST PROCEDURES GENERALPROCEDURES: (CONT) • Perform all equipment warm-up procedures. • 2. Perform all EIS equipment manufacturer’s required maintenance: Gas calibration, leak test etc.. • 3. Determine if the vehicle is all wheel drive (AWD) equipped: AWD, full-time four wheel drive, or • Non-disengageableTRACTION control.
BAR 97 TEST PROCEDURES GENERAL PROCEDURES: (CONT) 4. Vehicle test weight: EIS will WEIGH the vehicle’s drive axle. 5. EIS uses the measured weight of the drive axle and vehicle INFORMATION database (VID) and vehicle LOOK-UP table (VLT) to calculate correct load.
BAR 97 TEST PROCEDURES GENERAL PROCEDURES: (CONT) 6. If the measured drive axle weight does not match (within set tolerances) VID/VLT data: EIS may ask the technician if the vehicle appears to have an excess load greater than 500 lbs. (a camper shell, a load of bricks, etc.). A. If the technician answers YES, the EIS will calculate proper load. B. If the technician answers NO, the EIS may prompt to weigh the non-drive axle and will use the total measured weight to calculate the load.
BAR 97 TEST PROCEDURES PREPARING TO TEST THE VEHICLE: 1. Vehicle condition - Check under the vehicle for fluid leakage: A. Oil B. Coolant C. Transmission fluid, etc.
BAR 97 TEST PROCEDURES PREPARING TO TEST THE VEHICLE: (cont) 2. Inspect the TIRES for any unsafe condition(s): A. Excessive wear B. Damage C. Tread separation D. Size mismatch E. Studs, etc. F. Check/correct TIRE INFLATION pressure prior to testing G. Loose wheel weights H. Wheel covers I. Rocks stuck in the tread, etc. that could fly loose during testing
BAR 97 TEST PROCEDURES 3. There is no 3. !!!!
BAR 97 TEST PROCEDURES PREPARING TO TEST THE VEHICLE: (cont) 4. If any condition exists which could render the vehicle unsafe to test: A. The technician should ABORT the test immediately NOTE: ALWAYS FOLLOW ALL EQUIPMENT MANUFACTURER’S PROCEDURES AND PRECAUTIONS WHEN PREPARING TO TEST OR WHEN TESTING A VEHICLE.
BAR 97 TEST PROCEDURES INITIATING THE TEST: 1. Follow the on-screen PROMPTS when entering the data. 2. Enter all of the required technician and vehicle information data into the EIS: A. Uses both a bar code scanner and manual entry. B. Most entries are similar to BAR 90 TAS entries. C. Follow published procedures and the EQUIPMENT manufacturer’s instructions, as necessary.
BAR 97 TEST PROCEDURES 3. Placing the vehicle on the dyno: A. Inspect the dyno rollers for fluid, rocks, etc. that could cause an unsafe condition. B. Place the vehicle’s DRIVE WHEELS on the dynoscale following the manufacturer’s procedures for the equipment being used. C. Follow the on-screen prompts when CENTERING the drive wheels on the rollers. D. Check vehicle/equipment clearance using manufacturer’s guideline to assure a safe testing condition.
BAR 97 TEST PROCEDURES 3. Placing the vehicle on the dyno: (cont.) E. Restrain the vehicle from foreward and SIDEWAYS movement per manufacturer’s instructions: 1. Passive and/or automatic restraint system (straps, rollers, wheel chocks) 2. Position side rollers within 5” of sidewall F. Position auxiliary fan(s) in front of the vehicle and turn ON 1. EIS will prompt for fan if ambient temperature is above 72o F G. Connect appropriate Tach lead to vehicle (contact & non-contact type)
BAR 97 TEST PROCEDURES 4. Hook up OBD II port. 5. Insert the probe(s) into the tailpipe. A. EIS will prompt for DUAL EXHAUST per data entry. 6. Assure that all accessories are turned OFF. 7. Assure that the vehicle is at operating temperature before placing on dyno.
BAR 97 TEST PROCEDURES 8. Dry the tires as necessary: A. Follow the EIS prompts for drying the tires. B. Under 30 mph and specified rpm for the time prescribed by the EIS on-screen prompt. 9. Close the vehicle’s hood during the inspection. PERFORMING THE TEST: NOTE: To ensure emissions test accuracy when performing either a smog certification or a baseline emissions test, the technician will not connect diagnostic test equipment to the vehicle.
BAR 97 TEST PROCEDURES PERFORMING THE TEST: (cont) 1. BAR 97 pre-test requirements: A. EIS looks for the following conditions to be present before beginning the test sequence: 1. The sample dilution is within limits. 2. The EIS does not detect a LOW FLOW condition. 3. The engine speed is between 400 & 1250 rpm. 4. The dyno rollers are not TURNING. B. If the conditions are not met, the EIS will prompt the needed correction.
BAR 97 TEST PROCEDURES PERFORMING THE TEST: (cont) C. If the conditions are met, the EIS will prompt “test can begin”. 2. Starting the 50/15 test mode (test mode I), ACCELERATE the vehicle to 15 mph: A. Hold the speed steady as the EIS applies the load. B. Maximum test duration of 100 seconds C. Once the 50/15 test is complete the EIS will prompt the technician to accelerate the vehicle to 25 mph.
BAR 97 TEST PROCEDURES PERFORMING THE TEST: (cont) D. Follow on-screen instructions to perform the 25/25 test (test mode 2) 3. If any UNSAFE condition occurs during the testing, abort the test immediately: A. Review abort conditions. 4. If, during any segment of the loaded mode test, conditions cause the vehicle to fall out of the set test parameters for a specified time, the EIS will display an error message requesting a test restart:
BAR 97 TEST PROCEDURES PERFORMING THE TEST: (cont) Restart parameters: A. Excessive ACCELERATION DURING 50/15 OR 25/25 TEST. B. Excessive or low vehicle speed (mph) during 50/15 or 25/25 test. 5. If the condition continues longer than allowed the EIS will prompt the technician to restart the test or abort the test. 6. When the test sequence is completed successfully, the EIS will display “end of ASM emission test.”
BAR 97 TEST PROCEDURES OPTIONAL EMISSIONS TEST SEQUENCES: 1. Two speed (no load) idle test sequence used for trucks and motor homes with a GVWR of over __10000 lb._: A. Determined by the VID from the data entered. B. See Visual Inspection Requirements. C. See Functional Inspection Requirements. D. Perform gas cap tests.
BAR 97 TEST PROCEDURES VISUAL INSPECTION REQUIREMENTS: 1. Determined by the VID from the data entered. A. See Visual Inspection Requirements. B. All vehicles now require a comprehensive visual inspection.
BAR 97 TEST PROCEDURES X X X X X X X X X X X X X X X X Visual Inspection Requirements Note: The BAR is now requiring ALL vehicles to undergo a comprehensive visual inspection.
BAR 97 TEST PROCEDURES FUNCTIONAL TEST REQUIREMENTS: 1. Determined by the VID from the data entered. A. See Functional Inspection Requirements.
BAR 97 TEST PROCEDURES • FUNCTIONAL TEST REQUIREMENTS • ASM Test: • EGR Test not required • Ignition timing, MIL and fuel cap integrity tests required • TSI Test: • All functional tests required
BAR 97 TEST PROCEDURES VISUAL INSPECTION AND FUNCTIONAL TEST REQUIREMENTS: 1. Determined by the VID from the data entered. A. See Visual Inspection Requirements. B. See Functional Inspection Requirements. C. Perform gas cap tests.
BAR 97 CUSTOMER AWARENESS ADVISING THE CUSTOMER ABOUT ASM LOADED MODE TESTING vs BAR 90 TESTING: (see attached documents regarding smog program) 1. Vehicle is tested on a DYNAMOMETER to more thoroughly identify harmful vehicle pollutants: A. Simulates actual vehicle driving conditions (load) B. Uses a 5 gas analyzer to accurately measure NOx as well as CO, HC, CO2 and O2 . C. BAR 90 tests do not measure NOx.
BAR 97 CUSTOMER AWARENESS 2. ASM tests are required in Enhanced areas of state. 3. BAR 97 Smog Check program emphasizes vehicle MAINTENANCE & REPAIR. 4. Program is designed to identify and repair California’s worst polluting vehicles. 5. Program requires vehicle owners to make emission related repairs. 6. Program incorporates low income repair programs known as Consumer Assistance Program (CAP).
BAR 97 CUSTOMER AWARENESS 7. Encourages regular vehicle maintenance. 8. Interpreting the VIR for the vehicle owner (see handout of sample VIR’s) A. The technician should INTERPRET the information provided on the VIR in a way that the customer can understand it: 1. Explain what the system does. 2. Why it failed 3. How the failure affects emissions and the ENVIRONMENT.
BASIC DIAGNOSTIC PROCEDURES 1. Analysis of exhaust emissions noted on VIR, and basic diagnostic approach. 2. Short overview of diagnostic flow chart application (see flow chart handouts). NOTE: Diagnostic flow charts and procedures will be covered thoroughly in the update course. “Advanced Emissions Diagnostic Training”
BAR 97 TRANSITION EXAM Final Examination 1. Student must correctly answer 17 or more examination questions (out of 25) to pass the course. Students must retake class if they fail. 2. Instructor may score examination in class.
BAR 97 LAB ASSIGNMENT 1. Student will perform (to teacher’s satisfaction) one ASM emission test (loaded mode test only) on a vehicle already placed on a BAR 97 EIS.