Systems and methods for stationary engine emissions testing

A portable self-contained test system for measuring emissions of an engine, comprising:

• A structural assembly forming a plurality of component mounting positions;
• A heated sampler mounted in said structural assembly and having an input connector adapted to receive a line carrying exhaust from the engine to the heated sampler for testing;
• A spectrometer mounted in said structural assembly and connected to a gas output of the heated sampler;
• A plurality of testing gas sources connected to the heated sampler via electrically actuated valves to selectively provide testing gases to the heated sampler;
• A programmable control device connected to said valves, comprising a program that automatically electrically controls said valves in a predetermined sequence to perform a series of emissions measurements;
• A computing device connected to said spectrometer and containing software that receives test data and analyzes said data to produce a standardized emissions test report as an output;
• and
• A portable electrical power source mounted in said structural assembly and connected to provide power to said spectrometer, said valves, said programmable control device, and said computing device;
• Wherein the structural assembly is arranged and sized so that the system contained therein can be delivered to a test site on a vehicle, removed from the vehicle and placed in position proximate to the engine requiring emissions testing, and left there for the duration of the emissions test.