The NOx Problem
1. History of Diesel
The diesel engine is a Compression Ignition (CI) Internal Combustion Engine (ICE) that was invented by Rudolf Diesel, a German engineer in 1892. Unlike a Sparked Ignition (SI) engine, Diesel designed the engine to run on vegetable oil, more specifically peanut oil.
2. CI vs SI, the difference
As its name suggests, the CI engine’s ignition of the air-fuel mixture is caused by the mechanism compression rather than a spark from a spark plug of SI engine.
This difference of operation gives very different characteristics to these engines and thus allows the CI run more efficiently by having a higher compression ratio.
3. Its strength is also its weakness: NOx is a challenge for Diesel
Due to the higher compression ratio of the CI engine (14 to 23 …show more content…
Clean Air Act
The Air Pollution Control Act of 1955 was the first US Federal legislation involving air pollution, control and prevention was left to the state and local agencies. And it was 1963 when the Clean Air Act gave the federal government the authority to address air pollution. 1970 saw further expansion of authority and new regulatory programs most notably New Source Performance Standards (NSPS) and National Emissions Standards for Hazardous Air Pollutants (NESHAPs).
7. Non road Engine
The amendment of 1990 further expanded the list of pollutants in NESHAPs and authority to regulate non-road vehicles and engines. This can be seen in the regulation “Final Rule for Determination of Significance for Nonroad Sources and Emission Standards for New Nonroad Compression-Ignition Engine At or Above 37 Kilowatts” in June 1994.
The definition of a non-road engine is as such:
an self-propelled or serves a dual purpose by both propelling itself and performing another function (such as garden tractors, off-highway mobile cranes and bulldozers); or In or on a piece of equipment that is intended to be propelled while performing its function (such as lawnmowers and string
1. History of Diesel
The diesel engine is a Compression Ignition (CI) Internal Combustion Engine (ICE) that was invented by Rudolf Diesel, a German engineer in 1892. Unlike a Sparked Ignition (SI) engine, Diesel designed the engine to run on vegetable oil, more specifically peanut oil.
2. CI vs SI, the difference
As its name suggests, the CI engine’s ignition of the air-fuel mixture is caused by the mechanism compression rather than a spark from a spark plug of SI engine.
This difference of operation gives very different characteristics to these engines and thus allows the CI run more efficiently by having a higher compression ratio.
3. Its strength is also its weakness: NOx is a challenge for Diesel
Due to the higher compression ratio of the CI engine (14 to 23 …show more content…
Clean Air Act
The Air Pollution Control Act of 1955 was the first US Federal legislation involving air pollution, control and prevention was left to the state and local agencies. And it was 1963 when the Clean Air Act gave the federal government the authority to address air pollution. 1970 saw further expansion of authority and new regulatory programs most notably New Source Performance Standards (NSPS) and National Emissions Standards for Hazardous Air Pollutants (NESHAPs).
7. Non road Engine
The amendment of 1990 further expanded the list of pollutants in NESHAPs and authority to regulate non-road vehicles and engines. This can be seen in the regulation “Final Rule for Determination of Significance for Nonroad Sources and Emission Standards for New Nonroad Compression-Ignition Engine At or Above 37 Kilowatts” in June 1994.
The definition of a non-road engine is as such:
an self-propelled or serves a dual purpose by both propelling itself and performing another function (such as garden tractors, off-highway mobile cranes and bulldozers); or In or on a piece of equipment that is intended to be propelled while performing its function (such as lawnmowers and string