State of California
AIR RESOURCES BOARD
Resources Building Auditorium
1416 Ninth Street
Sacramento, CA
August 15, 1973
9:30 a.m.
AGENDA
73-19-1 Approval of Minutes of June 7, June 20, and July 18,
1973 Meetings.
73-19-2 Consideration of Dana Corporation's Application for
Accreditation of its NOx Control Device for 1966-1970
Class "a" Vehicles.
73-19-3 Follow-up Report on NOx Control Devices.
A. Air Quality Products (Pure-Power and Kar-Kit)
B. Carter Carburetor Division
C. Contignitron Company
D. STP Corporation
73-19-4 Report of Certification Testing of 1974 Model Year
Prototype Vehicles.
73-19-5 Other Business.
73-19-6 Remarks from Audience - End of Morning and Afternoon
Sessions.
ITEM NO.: 73-19-2
Consideration of Dana Corporation's Application for Accreditation
of its NOx Device for Class "a" Vehicles.
RECOMMENDATION
Adopt attached Resolution 73-46 granting accreditation for the
Dana Corporation's Class "a" device unless data obtained from the
new fleet being tested with the revised specifications are
inconsistent with those included in this report. Data from the
new fleet will be available at the time of the ARB Meeting on
August 15, 1973.
SUMMARY
Dana Corporation has reapplied for accreditation of its NOx
device for class "a" vehicles. Two previous applications were
denied because of driveability problems and an increase in
hydrocarbons. This application concerns a modification of the
device initially considered by the Board. The modification
consists of retarding the basic timing for all vehicles and
additional hardware for Volkswagens. For the Volkswagen
application, an air bleed is installed between the EGR valve and
intake manifold, and a vacuum relief valve is installed between
the speed switch and EGR valve.
ITEM NO.: 73-19-3A1
Air Quality Products, Inc. Approved Modification to the 66-70
Pure Power Device to Minimize Adverse Spark Retard Effects.
RECOMMENDATION
None. This is an informational report.
SUMMARY
This report revises the staff report presented at the July 18,
1973 Board meeting covering the evaluation of the modification
proposed by Air Quality Products to the 66-70 Pure Power device
to provide positive protection against sustained spark retard
above 60 mph, while still being effective at 55 mph. The
revision consists of the addition of a statement by Air Quality
Products concerning engine speed sensor settings for the
restoration of vacuum spark advance.
The approved modified Pure Power device consists of a capacitive
discharge ignition system, engine speed sensor and a vacuum
solenoid valve. At idle and low engine speeds, the normally
closed solenoid valve blocks off the vacuum to the distributor.
As engine speed increases, the factory set speed sensor actuates
the valve thus restoring the vacuum to the distributor at 2300
engine RPM (nominally 57 mph vehicle speed). - See appended Air
Quality Products' letter.
Air Quality Products, Inc. has been notified of the board's
intention that the modification be applied to the 66-70 Pure
Power devices currently in its distribution system. Air Quality
Products was requested to submit a plan to the staff for the
disposition of the hardware by August 10, 1973.
It is the staff opinion that the modified 66-70 Pure Power device
complies with the additional criterion promulgated by Resolution
73-27-C for positive protection against sustained spark retard
above 60 mph.
ITEM NO.: 73-19-3B
Carter Carburetor Division's Approved Modifications to the
Accredited CER Oxides of Nitrogen Control Device to Minimize
Adverse Spark Retard Effects.
RECOMMENDATION
None. This is an informational report.
SUMMARY
This report revises the staff report presented at the July 18,
1973 Board meeting covering the evaluation of modifications
proposed by Carter Carburetor Division to the accredited CER
oxides of nitrogen control device to provide positive protection
against sustained spark retard above 60 mph, while still being
effective at 55 mph. The revisions consist of changes in the
installation instructions concerning basic timing requirements
and engine speed sensor settings for the restoration of vacuum
spark advance at 57 mph.
The approved modified CER NOx control device utilizes VSAD and a
4 degree retard of the basic timing for the control of oxides of
nitrogen. The device includes a switching feature that senses
engine speed to reapply the VSA at vehicle speeds over 57 miles
per hour. Engine protection against overheating is also
provided.
Carter Carburetor has been notified of the Board's intention that
the modifications be applied to the CER NOx control devices
currently in its distribution system. Carter Carburetor was
requested to submit a plan to the staff for the disposition of
this hardware by August 10, 1973.
It is the staff opinion that the modified device complies with
the additional criteria of 4ø retard in basic timing and positive
protection against sustained spark retard above 60 mph.
ITEM NO.: 73-19-3C
Contignitron Company's Approved Modifications (Model 44-8) to the
Accredited Oxides of Nitrogen Control Device to Minimize Adverse
Spark Retard Effects.
RECOMMENDATION
None. This is an informational report.
SUMMARY
This report revises the staff report presented at the July 18,
1973 Board meeting covering the evaluation of modifications
(Model 44-8) proposed by Contignitron Company to the accredited
oxides of nitrogen control device to provide positive protection
against sustained spark retard above 60 mph, while still being
effective at 55 mph. The revisions consist of changes in the
installation instructions concerning engine speed sensor settings
for the restoration of normal engine timing at 57 mph.
ITEM NO.: 73-19-4
Certification Testing of 1974 Model Year Prototype Vehicles.
RECOMMENDATION
None. This is an informational report.
DISCUSSION
All vehicle manufacturers apply to the Air Resources Board (ARB)
before the beginning of the model year for approval of their
vehicles with proposed emission control systems necessary to
comply with the required emission standards.
The regulations require each manufacturer to test prototype
vehicles selected by the Executive Officer. These vehicles are
representative of the models to be sold in California. They are
grouped into two separate fleets. One fleet, known as the
emission-data fleet, consists of prototype vehicles which are
driven for 4,000 miles and then emission tested. The purpose of
the emission-data fleet is to determine the stabilized emission
levels of new motor vehicles. The second fleet, known as the
durability fleet is made up of new prototype vehicles which are
driven for 50,000 miles and emission tested every 4,000 miles.
The durability fleet data are used to establish deterioration
factors, which are used to determine the emission control
system's effectiveness over its expected useful life. These
deterioration factors enable the Executive Officer to predict a
motor vehicle's emission levels at 50,000 miles based upon its
measured levels at 4,000 miles. Deterioration factors are then
applied to the emission-data fleet results to determine
compliance with the emission standards.
Confirmatory Tests Required
In addition to the submission of test data on the prototype test
vehicles, including operation with 91 RON fuel, the manufacturers
are required to deliver most of the test vehicles to EPA for
confirmatory testing.
Some of the prototype vehicles are required to be shipped to
California for confirmatory testing. These vehicles represent
two types: (1) those that have emission control systems which
will only be produced for California sale, and (2) vehicles which
met the Federal (49 State) emission standards but exceeded
California standards.
After all of the vehicles in an engine family have been tested
and found to conform with the regulations, the manufacturer is
granted an order of approval.
ARB Laboratory Tests
Confirmatory tests of manufacturers' prototype vehicles are
currently being conducted at the ARB laboratory. This is the
first year that these tests have been conducted by the staff. In
recent years confirmatory tests were conducted by EPA or a
private laboratory. Testing by the ARB staff is now possible
because of the new laboratory facility at El Monte. The test
procedure requires that these vehicles be soaked and tested under
a controlled temperature condition.
During the past several weeks, the following manufacturers'
vehicles were tested:
Number of 4,000 Mile-Vehicles Tested By ARB
Manufacturer No. Of Vehicles No.of Tests
AMC 8 14
Chrysler 6 11
Daimler-Benz 1 1
(Mercedes)
Ford 5 9
Toyota 1 1
Volvo 1 1
TOTALS 22 37
Results of Tests
The test data are not included in this report, because the
deterioration factors have not been determined for each engine
family. In several cases where the deterioration factors were
known, the prototype vehicles exceeded the emission standards.
This will result in the manufacturers having to submit new
prototype vehicles with different calibrations.
It is anticipated that most of the confirmatory testing will be
completed in August. The results of these tests and a summary of
the new car approvals will be reported at a subsequent Board
meeting.