Does petrol engine emit more toxic gases than deisel engine.?

Answer 1

For the same load and engine conditions, diesel engines spew out 100 times more sooty particles than gasoline engines. However, petrol engines produce more toxic chemicals, less particles.

Diesel exhaust is a mixture containing over 450 different components, including vapors and fine particles. Over 40 chemicals in diesel exhaust are considered toxic air contaminants by the State of California. Exposure to this mixture may result in cancer, exacerbation of asthma, and other health problems.

For the same load and engine conditions, diesel engines spew out 100 times more sooty particles than gasoline engines. As a result, diesel engines account for an estimated 26 percent of the total hazardous particulate pollution (PM10) from fuel combustion sources in our air, and 66 percent of the particulate pollution from on-road sources. Diesel engines also produce nearly 20 percent of the total nitrogen oxides (NOx) in outdoor air and 26 percent of the total NOx from on-road sources. Nitrogen oxides are a major contributor to ozone production and smog.

Way Too much info:
http://www.epa.gov/oms/

Answer 2

When you are referring to a petrol engine is it burning gasoline, ethanol or a combination of ethanol and gasoline? When an internal combustion engine burns a fuel the heat can produce NO(x), carbon dioxide and carbon monoxide. Some of the benzene components may escape or be produced in the exhaust and it is carcinogenic(cancer causing) So yes some toxic fumes may be released but unless your exhaust system leaks or you are running the car in a closed garage, it generally is not directly toxic but some of the exhaust can contribute to smog, which is not what you are directly asking.

Diesel engines can be noisy and produce carbonous particulates. Some of the particulants may contain cancer causing chemicals (so does the fuel gasoline and diesel) but directly being emited by the exhaust is carbon dioxide, carbon monoxide and particulates. The particulates are particularly troublesome to diesel engines, which contributes to poor air quality and be harmful if inhaled.

The smoky emission of a diesel engine may be readily seen, however the question is which is more toxic. Discounting the sulfur question(it depends if the fuel is contaiminated with sulfur)Some diesel engines produce less smog contributing chemicals. However both diesel and petrol engines contribute roughly the same amount of Carbon dioxide that contributes to global warming.

Answer 3

Actually, Diesel emits more toxic gas.

Answer 4

Man these guys are too smart for their own good -DIESELS DO NOT EMIT CARBON MONOXIDE (you can't commit suicide with a diesel!!!!) th