BMW E92 02 sensor possible problem.
Obviously, you're not working a Chevy van. :silly: So you'll have to keep your eyes open on where the intake manifold begins and ends, as well as what hoses connect to the intake.
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Cheers mate : )
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Thanks, I'll take a look at that.
Kind regards
Steve.
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I had my MOT the other day and it passed the emissions. Attached is some info from the gas analyser.
Am I right in saying, the tests confirm a leak due to the percetage of co2 in the system?
Cheers.
Regards
Steve.
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- Landroverman1958
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The lamba does suprise me that the limit is up to 4?? usually the limit is .970-1.03 lamba for a petrol car in the UK.
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Landroverman1958 wrote: The lamba does suprise me that the limit is up to 4?? usually the limit is .970-1.03 lamba for a petrol car in the UK.
Agreed. :ohmy: It almost makes me wonder if the vehicle is intentionally set up to run lean under idle conditions? No vehicles that I've seen in the US work this way, but that doesn't mean anything. :lol:
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Cheers
Steve.
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The Direct injection allows to execute “slightly” different principle of operating:
throttle can be opened “wider”, by this reducing the tenuity in the intake manifold and also energy necessary to create it. N53, for example, allows to intake 3 .. 3,5 time more air than would be needed for fuel combustion, it means, Lambda = 3 .. 3,5;
if the nozzles inject fuel a moment before fuel ignition and in the immediate vicinity of spark plug, normal fuel ignition is possible: even if the average mixture (in all combustion chamber) is lean (with Lambda to 3 .. 3,5, it means, air “leftover” is 3 .. 3,5 times), in direct vicinity of spark plug it is “rich” enough (Lambda below 1) and ignites very well.
Stratified charge creates significant gain for N53 engine: 25% fuel economy in load of 0 .. 10%, 20% fuel economy in load of 10 .. 30%. Percentage of economy decreases to 0%, when 60% of load is reached. For example, if we drive with 90 .. 120 km/h, N53 works with load till 30%, it means 20% economy comparing to “regular” BMW engine. Fuel economy for N43 is a bit smaller, but in average it creates at least 15%.
Additionally to fuel economy, such engine can maximize performance in area of middle load – in each cycle fuel is injected in 2 .. 3 portions, each portion being injected in it’s own – more optimal injection moment.
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