This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
PROCEDURE FOR MEASURING BASIC HIGHWAY VEHICLE ENGINE PERFORMANCE AND FUEL CONSUMPTION–SPARK IGNITION AND DIESEL
- Ground Vehicle Standard
- J1312_198006
- Issued
Sector:
Issuing Committee:
Language:
English
Scope
This procedure is specifically designed to determine a fuel rate versus torque map for heavy-duty spark ignition and diesel engines as determined at the DOT/SAE Truck & Bus Fuel Economy Measurement Conference April 21–23, 1975. This engine performance map, when combined with accessory losses, transmission and driveline losses, vehicle aerodynamics, etc., can be used with vehicle operating profiles in a computer program to simulate vehicle fuel economy.
Use of this procedure results in torque and fuel rate being measured at 30 data points, minimum, and friction torque, either measured or calculated, at five data points, minimum. Testing is accomplished using a procedure very similar to SAE J816b, but actually is quite different since this is a specific test for a specific purpose rather than a general test code as specified in J816b. It is recommended that the test be run at inlet air temperatures as near as possible to the standard specified in J816b so as to minimize correction. If correction of full load torque is required, it is done according to J816b.
The results of a test conducted according to this procedure are plotted as a fuel rate versus torque map for as many speeds as required to define the operating characteristics of the engine tested.
Topic
Data Sets - Support Documents
No Datasets Available
Issuing Committee
Engine Power Test Code Committee
The Engine Power Test Code Standards Committee reports to the Powertrain Systems Group of the Motor Vehicle Council. The Committee is responsible for developing and maintaining SAE Standards, Recommended Practices, and Information Reports related to the dynamometer testing of internal combustion engines for applications other than marine or aircraft use. Participants in the SAE Engine Power Test Code Standards Committee include OEMs, suppliers, consulting firms, government, and other interested parties.
Reference
| Number | Title |
|---|
* Redlines comparisons are available for those standards
listed in the Revision History that contain a radio button. A
redline comparison of the current version against a revision is
accomplished by selecting the radio button next to the standard and
then selecting 'compare'. At this time, Redline versions only exist
for some AMS standards. SAE will continue to add redline versioning
with ongoing updates to SAE MOBILUS.