-2
$\begingroup$

enter image description here What is wrong with totally replacing the inlet of a piston engine with a surgical mask?As surgical masks get rid of about 80% of air impurities and dusts.

$\endgroup$
13
  • $\begingroup$ I want to reduce the weight of my 30kg engine,this is why am considering replacing its inlet with a surgical mask and to also increase the hp by 1. $\endgroup$ May 7 '18 at 11:46
  • $\begingroup$ What is your basis this will increase hp? A face mask have much different design parameters - it would be torn up. $\endgroup$
    – paparazzo
    May 7 '18 at 13:32
  • $\begingroup$ What if I use an iron mesh to stregthen it@paparazzo $\endgroup$ May 7 '18 at 13:43
  • $\begingroup$ What if you looked for a high performance air filter? Mesh is not going to strengthen the fiber. $\endgroup$
    – paparazzo
    May 7 '18 at 13:46
  • 2
    $\begingroup$ I'm voting to close this question as off-topic because it is just plain silly. $\endgroup$
    – agentp
    May 7 '18 at 16:05
1
$\begingroup$

Air impurities are no issue for an ICE, only dust and other bigger particle matter are. The material of a surgical mask has little flow capacity, so a bigger filter is needed than normal, without good reason. You could use them for an ICE, but as is mentioned before, their flow capacity is way too low. You'd need to glue lots of them together, and fold them into a saw pattern to efficiently package them into a filter box. Then they could properly function as an airfilter.

But it won't weigh less, so it won't contribute in your search to lower the weight of your engine. If you don't live in a dusty area, rather remove the entire filter if it's really important for the engine to weigh less. The engine will wear faster though.

$\endgroup$
2
$\begingroup$

How about the volume of air going through it? For a human with assuming 10 breaths a minute and 2 litres per breath that is 40 litres a minute...

An engine will use that is seconds so the life of that filter is going to be very short.

Most racing engines don't have air filters as the servicing and rebuilds are so much more frequent, but for a family car then longevity is a higher priority.

$\endgroup$
1
  • $\begingroup$ What if i mesh the inlet with an iron guaze to strengthen the mask against the huge volume of air being sucked into the engine @Solar Mike $\endgroup$ May 7 '18 at 12:01
2
$\begingroup$

There are 2 ways to increase the airflow through a filter: bigger holes and more surface area.

Bigger holes is usually not possible because that would defeat the purpose of the filter. The face mask doesn't seal all that well to the face resulting in a few large holes at the side where air can escape and enter unfiltered.

More surface area ban be achieved by pleating the filter using a mesh to support it. You can buy ready made performance filters made for high airflow for not all that much money (a quick google found several for < $70) and that will be a better deal than trying to make your own.

$\endgroup$
0

Not the answer you're looking for? Browse other questions tagged or ask your own question.