Although the term Large Spark Ignited Engine (LSI) is a bit confusing, the term actually applies to IC engines over approximately 35 bhp. In this case, it also applies to industrial engines, not over the road.
In preperaton for an engine fuel system certification, I recently reviewed the US EPA recognized test protocol and it actually looks like electrical line signal noise! I am very familiar with the US-06, the EPA FTP-75, and the Euro cycle testing, but they look like smooth paper compared to this test.
The testing will take place on a forklift truck engine, where the throttle is slammed wide open full load and back to idle. There is almost no intermediate throttle / load transition.
Has anyone had any experience with this test? It looks like a real killer!
Franz
In preperaton for an engine fuel system certification, I recently reviewed the US EPA recognized test protocol and it actually looks like electrical line signal noise! I am very familiar with the US-06, the EPA FTP-75, and the Euro cycle testing, but they look like smooth paper compared to this test.
The testing will take place on a forklift truck engine, where the throttle is slammed wide open full load and back to idle. There is almost no intermediate throttle / load transition.
Has anyone had any experience with this test? It looks like a real killer!
Franz