Certified Test Results For Caterpillar Distributor

    TEST DESCRIPTION

This report summarizes the results of testing for fuel consumption and combustion pollutants performed on a 1991 CATERPILLAR 3116 diesel parts truck, owned and operated by the regional representative for CATERPILLAR and MOBIL OIL. The testing was designed to determine the effect of various technological modifications on fuel economy, as well as on tailpipe exhaust emissions of oxides of nitrogen (NOx) and carbon monoxide (CO).

Initial testing was conducted to establish a baseline for the unmodified 3116 engine. Subsequent testing was conducted with fuel catalyst and oil catalyst modifications installed on the engine.

 

TEST METHODOLOGY

 

Engine Operation

The 3116 engine, mounted in a GMC TOPKICK truck, was tested on a dynamometer.   All testing was conducted at the eleven (11) load points indicated below, in accordance with the ISO 9178, Part 4, Test Cycle Type B, "Universal" test procedure.

Point #	RPM	Nominal Load %	Nominal Load (MP)	Weighting Factor
1	2600	100%	MAX (1)	10%
2	2600	75%	150	2%
3	2600	50%	100	2%
4	2600	25%	50	2%
5	2600	10%	20	2%
6	2200	100%	MAX (1)	25%
7	2200	75%	150	8%
8	2200	50%	100	8%
9	2200	25%	50	8%
10	2200	10%	20	8%
11	2200	0%	0	25%

The MAX load actually achieved at both 2600 and 2200 RPM varied with each test. Values ranged from 172 hp to 190 hp. The targeted 200 hp was not achieved.

 A typical test run usually lasted 2.5 hours, including an initial period to allow the engine to warm up, and then monitoring the engine performance and emissions parameters at each of the eleven (11) load points.

Monitoring of Diesel Fuel Economy

Fuel consumption data was obtained by over-the-road testing. Conducted in accordance with SAE Test Procedures.

Monitoring of Engine Oil Performance

The wear rate of the engine and the level of contaminants found in the engine oil were measured by utilizing data collected in Caterpillar's Scheduled Oil Sampling (SOS) program. Oil samples were analyzed in a Perkin-Elmer AA analyzer, which measured the part per million (PPM) levels of metal elements in the used oil.

In addition, chemical and physical tests to determine the levels of water, fuel and antifreeze in the oil were conducted, as well as tests to identify loss of lubricating properties by quantifying combustion by-products, including soot, sulfur and oxidation and nitration products.

Monitoring of Emissions of Gaseous Pollutants

The exhaust of the 3116 engine was monitored continuously during the entire dynamometer run for oxides of nitrogen (NOx), carbon monoxide (CO), oxygen (O2) and carbon dioxide (CO2), in accordance with California Air Resources Board (CARB) test procedures.

Baseline testing of the truck, before modifications were made, was conducted over a 30 (thirty) day period, while the truck made weekday round trips, averaging 179 miles daily between San Diego and Ontario, CA. Fuel economy determinations were then made after the installation of the INLINE FUEL CATALYST, and again after the addition of the DIESEL ENGINE OIL CATALYST.

The over-the-road test data showed a 5.7% improvement in fuel economy with the INLINE FUEL CATALYST in place, and an additional small improvement, totaling 6.4% overall, after the addition of the DIESEL ENGINE OIL CATALYST.