talking about catalytic converters.a) state which emission(s) the system controls. is this asking what the catalytic converter controls on the car? if so please answer.b) explain how the emission(s) are controlled. this is similar to 'a', but i'm not sure as to how to answer, please help
if i understand your question correctly, your asking how catalytic converters work?
well i don't understand those two questions so if you think thats what its asking then please answer 'a' and 'b'
state which emissions the system controls
nitrates of oxygen and carbon monoxide and to a lesser degree carbon dioxide.
explain how the emissions are controlled
the platinum and rhodium and in some cases gold attract the nitrogen away from the N02 resulting in a reduction of nox and an increase in 02.
i need to answer those two questions again, so do you know of another 2 emission control systems that you have answer to.
the high temperature present in a cat burns the excess hydrocarbons thus reducing carbon monoxide
if i understand correctly,
two additional emission control systems are 02 sensors which control emissions by keeping the air/fuel mixture as close to ideal as possible resulting in complete combustion and air injection which injects additional air into the exhaust stream again resulting in as complete combustion as possible particularly when the engine has not reached operating temperature so is much less efficient or 'dirty' if you will.
does that help?
but abt the
and air injection
ok, your right egr would be a fourth emissions system.
pretty simple really if you think of exhaust as an inert gas that uses up space thus reducing the amount of air and fuel in the engine, thats about it.
air injection primarily burns up all the extra fuel needed so the engine will run well cold.
you've given me quite an education just thinking about these things after all these years, thanx, gary
please dont forget to click accept and good luck
can you please expand on your answering 'a' and 'b' for the catalytic converter, air injection and egr
a is easy all emissions systems are controlling nox, hc, and co and to a lesser degree c02
thought i pretty much covered the cat
air injection is used to burn up the excess hc used with a cold engine
egr injects an ineert gas during decel.
semi retired mercedes benz master guild technician
so if the cataylytic converter or EGR and air injection are fautly so what will the customer complain about can you list to me
pretty interesting question.plugged cat would cause a severe lack of performance.extremely rich fuel mixture would cause a rotten egg smell.stuck open egr valve could cause a rough idle.other than that a check engine lite is really the only way a customer would know of a failure.
so you mean if the cata conveter or air injection and EGR faulty will be the same problem just you saidand so if i have a car so how can i servicing requirementand also how the system to test i mean just how to test cata conveter or air injection and EGR
for starters if the check engine lite isnt on you can be pretty sure the air injection and egr are ok and 02 sensor for that matter.later models with dual 02 sensors also monitor cat performance.earlier models would require an exhaust gas analyzer.
so how about this car
Make : Nissan Sentra 200sx
Year : 1996
Model: 2.0 L SR20DE engine (petrol)
your nissan has dual 02 sensors.is the check engine lite on?are there any peerformance issues?
so do you know the particulate filters and diesel exhuast fluid the purpose the operation and the seriving procedures
i retired from mercedes dealerships before bluetec, but heres an article on the system.http://en.wikipedia.org/wiki/BlueTecdiesel emission fluid is urea and there another article on wikipedia about it.btw how stuff works.com is another good source for some things.