Test Results
UPDATED JAN, 2007: Carnot Emission Services (CES)
San Antonio, Texas. Catalytic Development and Performance Validation (January, 2007)
PURPOSE: For an engine to become CARB and EPA compliant, it must remain below the applicable emissions standards throughout its useful life. The purpose of this test was to demonstrate that when outfitted with EVCC's catalytic muffler, a four-stroke engine (in this case, the Honda GX-160 engine) could meet CARB's new emissions requirements throughout a 125 hour life cycle.
SUMMARY: EVCC's catalytic muffler was fitted to a Honda four-stroke 163cc engine as used in lawn-mowers and other lawn and garden equipment. The engine ran for 125 hours, and was tested for emissions at three different test points: 4 hours, 62 hours and 125 hours of operation. The emissions tested were Carbon Monoxide (CO), Oxides of Nitrogen (NOx) and Hydrocarbons (HC).
The following chart demonstrates the emission reductions that were achieved by EVCC's catalytic muffler after 125 hours of operation in comparison with the Original Engine Manufactured (OEM) muffler.
The applicable emission standards for this category of engine, as set forth by the EPA and CARB, are as follows:
As shown above, when using the OEM muffler, this engine does not meet CARB's 2007 emission standards for Total HC + NOx. However, when outfitted with EVCC's catalytic muffler, the engine easily complies with both CARB and EPA requirements throughout its useful life.
Click here to download the PDF version of EVCC's official test report from Carnot Emission Services.
Environment Canada's Emissions Research and Measurement Division
Ottawa, Ontario. Comparing the Regulated Exhaust Emissions Emitted by a Small Two-Stroke Fire Pump Engine Equipped with an EVCC Catalyst. (July, 2006)
EVCC's catalytic muffler was fitted to a two-stroke 185cc class 1 non-handheld engine provided by Wildfire, a division of Tyco International Ltd. A six-mode test (in accordance with US EPA regulations) was conducted on four different configurations to establish the one best suited for this particular engine. It was determined that a catalyst using 20LPM of air injection provided the best solution.
The catalytic muffler using 20LPM of air injection produced the following emission reductions (in comparison with the Original Engine Manufactured (OEM) muffler):
The 2008 emission standards for this class of engine as set by CARB and the US EPA are 610 g/kw-hr, and 16.1 g/kw-hr for CO and Total HC+ NOx respectively. EVCC appears to have exceeded the upcoming emission standards for certification.
EVCC must now undergo additional testing to prove the durability of the catalytic muffler. Pending proof of durability, EVCC will become the first company to achieve certification of this engine.
Click here to download the PDF version of EVCC's official test report from Environmental Canada.
Bombardier Inc. Factory Laboratories
Valcourt, Quebec. Testing EVCC's Catalytic Muffler (October 2002)
This study assessed the effectiveness of EVCC’s catalytic muffler when installed on a 4 stroke 644cc 2002 Bombardier production engine (belonging to the 650cc engine family). The engine was tested by engineers at Bombardier, and was performed on a dyno setup in accordance with EPA standards SAE J1088, and a Horiba Mexa-7100D analyzer.
The 2002 production engine was first tested in the production set-up, as it would be sold to a consumer. A second test was then performed using the same engine, using EVCC’s catalytic muffler as a replacement for the OEM muffler originally installed on the engine, ceteris paribus. A summary of the test results are shown in the following table:
While EVCC’s catalytic muffler proved to greatly reduce harmful emissions as shown above, fuel consumption remained approximately the same as the OEM model. In addition, the engine’s power band (horsepower and torque) was actually increased between 4000 rpm to 6000 rpm when outfitted with EVCC’s catalytic muffler.
Continue Reading Older Test Results from Environment Canada >>
