How Helix Fuel Pumps Work! (Jerk Piston Variable Injection Pump)

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Learn how a jerk helix fuel pump works! It’s a variable injection jerk type pump that is used to supply fuel to an internal combustion engine (typically marine engines). The pump has a simple but effective method for controlling when fuel is injected and the volume of fuel injected.
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26 июн 2024

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Комментарии : 138

@savree-3d Год назад

Want to continue learning about engineering with videos like this one? Then visit: courses.savree.com/ Want to teach/instruct with the 3D models shown in this video? Then visit: savree.com/en

@freggo6604 Год назад

Excellent explanation; and all without background music. I wish certain other RU-vidrs would follow your example!

@savree-3d Год назад

I personally hate background music 😀 It's a personal thing though, some people love it. Guess it's like Marmite.

@freggo6604 Год назад

@@savree-3d Ah, Marmite. I used to work for Unilever ages ago but never had the pleasure of running into Marmite. Added to my Bucket List if I can find it in South Carolina :-)

@the510wagon 6 месяцев назад

Good animation. This style (non VIT) has fixed timing for the beginning of injection and only varies the end of injection. The VIT version of these pumps is controlled by a second rack & pinion that moves the barrel up and down, and therefore the height of the spill port, with respect to the helix. Another important feature not shown here is the puncture valve.

@ChevyConQueso Год назад

Solid animation and explanation.There's some other good ones, but this is the best I've come across so far.

@tylerdominelli3736 Год назад

7:17 - As a fairly newly licensed diesel mechanic who has, by nature, not had the pleasure of dealing with mechanical fuel systems simply because they are no longer around. That being said, my curious mind has always been baffled by the true impact of rack manipulation in terms of effective plunger stroke vs helix position. 10 out of 10. Clear, descriptive and intelligent.

@user-oz5yk9bm5c 7 месяцев назад

If you can buy a mercedes OM606 diesel engine, they use a mech fuel pump and are popular to modify. expensive but i think it would be very interesting for you.

@DuncanMargetts Год назад

Superb model and outstanding narrative, thanks!

@savree-3d Год назад

Thank you.

@NitinKumar-gj4tq Год назад

Thank you for the video... really great stuff !!

@aurangzebkne5 9 месяцев назад

Thank you for make me understand this complicated mechanism through eassy explanation 🙏

@user-qc5ul4kj5f 8 месяцев назад

I love it . We need more videos like this with machinery and mechanisms aimed to marine engineers . I subscribe immediately. Thanks

@infinitysailor7948 4 месяца назад

Great explanation

@Eternal_Sailor 3 месяца назад

Excellent animation along with precise explanation

@oguzoner3050 5 месяцев назад

Awesome explanation with very nice animation, Thank you for sharing this video, I have learned better from previous

@mxhxmd 4 месяца назад

Wow thank your for this video. Very clear explanation.

@priyanshu3899 Год назад

Need more topics related to Maine technology...this is very helpful

@bhajan2kaka Год назад

That was such a good explanation

@ciCCapROSTi 11 месяцев назад

Fascinating stuff.

@chowdhuryziauddin9002 5 месяцев назад

Excellent explanation, thanks

@iambeloved496 Год назад

Very good and descriptive. Thank you.

@user-jd3jg3fd 11 месяцев назад

Sir thank you so much it's very clear explained about individual fip system controlled fuel by governor fuel rack

@godlove91200 Год назад

Very very good explanation

@md.amanatullahkhanlingkon700 Год назад

the best video and explanation so far

@savree-3d Год назад

Thank you

@duleethn3455 Год назад

Damn sir this is the best video i have ever seen about this mechanism ❤️🔥

@gerardoenriquelopezurquia89 Месяц назад

Great video! I already knew how it works, but for people that doesn't, is very clear now💯👍👌

@SJ-zu2wq Год назад

Nice video animation and explanation,thanks for sharing,hope we see more marine videos..

@neilAneerGAmAI Год назад

Super video. Thanks 👍

@savree-3d Год назад

Thank you

@omerfaruk7451 6 месяцев назад

Thank you so much 🙏🙏

@anhvungoc2834 Год назад

very useful and easy to understand for new engineer!thanks

@savree-3d Год назад

You are welcome!

@jogyx0 9 месяцев назад

Clear presentation and explained ❤👍🏻

@savree-3d 9 месяцев назад

Thank you 🙂

@crystalmarine5011 9 месяцев назад

Excellent work

@savree-3d 9 месяцев назад

Thank you! Cheers!

@ranjumamachan5313 Год назад

Earned a subscribe. Beautiful explanation. I teach engines at the undergraduate level and this video was a more peaceful watch than watching a panda chew through a bamboo stick.

@savree-3d Год назад

Awesome, thank you!

@Harindu101 Год назад

thank you sooo much

@velociainnovations4944 Год назад

very helpfull🤙👍❤

@user-wk3rw2ep9f Год назад

도움이 많이 되네요~

@tanvirahmedsarker95 Год назад

I usually don't comment on RU-vid videos. But now I can't help it, I must have to come here in the comment section and thank you! Great model and narrative Sir! Loved your pedagogy!

@savree-3d Год назад

I appreciate that!

@ChevyConQueso Год назад

Commenting actually helps these guys out a lot more than clicking the like button, so if it's something you enjoyed, throw these guys a bone. Take in mind that if it's something you don't like, commenting, even if you're telling them they suck, still helps them out with the algorithm.

@sys2 10 месяцев назад

Wow thanks for this! Working on a tractor that i think work on the same priciple and havent figured out how the pumps works on it =) now its all alot clearer =)

@savree-3d 10 месяцев назад

You're welcome!

@md.arifuzzamansourav5041 Год назад

very understandable video.... thank u. please lay out another for Fuel injection valve of marine 2-stroke MAN B&W MC engine.

@yosrihardb9424 Год назад

GOOD ANIMATION

@MrLitonsutradhar 11 месяцев назад

An eye opener and Nicely explained, thank u.just wanted to know what controls the rack and teeth arrangement and which control of the engine regulates this movement

@gvdilshan7555 Год назад

This is amazing❤️❤️❤️😍😍😍🙊thank you very much for what you are doing for maritime industry😍🙊❤️❤

@savree-3d Год назад

No problem. Happy to help.

@jasonloquinerio4143 Год назад

I loved your work, Thank you so much! Can you make one for the governor? TIA.

@arnavsharma7865 Год назад

Amazing video. Can you explain the difference between fuel pump of main engine and auxillary engine. Thanks

@shubhamsinha5389 10 месяцев назад

thankyou

@jidendrap3745 Год назад

Thankyou somuch ❤️❤️❤️❤️❤️❤️❤️

@savree-3d Год назад

Most welcome 😊

@byzantios76 Год назад

Very understandable video thanx a lot.i have a question.where does the fuel go from the split outlet?

@alexkayidri7411 Год назад

Very fascinating. Clearly understood. Can that be set to specific position? I have two piston engine generator that uses two of this pumps is currently troubling me with fuel economy and low power. There appears to be incomplete combustion. Could that be problem with fuel pump? Kindly assist with advise.

@syedisam2603 10 месяцев назад

Please make videos on types of fuel injection system

@shivamrajgor5490 Год назад

Explanation is very nice 🎉🎉 Which software you use for creating beautiful and working models I request you please tell me 🙏

@jackryan6617 Месяц назад

good

@tomkergil3304 9 месяцев назад

If Iunderstan correctly the quadrant will only be able to rotate less than 180° before fuel leakages begins from minimum injection volime to maximum injection volume. We never see the back of the helix to confirm full construction. Splendid animation. You might include fuel color to indicate pump pressure changes from low at fill, high during injection volumes, then revert back to low when leakage begins.

@andrepowell8859 Год назад

Great explanation! However, could have included the shut-off position.

@alexkayidri7411 Год назад

Hi. Is the plunger intial position set manually or it is done by the governor?

@anandashok4444 Год назад

This was really very hard to understand. Thanks for helping

@Rahul-tg4uu Год назад

Please explain function of deflector on fuel pump

@foodtravelbydevacaterseven4219 7 дней назад

Sir please explain me overhaul time position control rak and rotate gear

@endlasaisreenivasulureddy823 Год назад

I wish u could have been my lecturer 😕🥺.. Nicely explained 😘

@Robert-ev5hp Год назад

How do you set the marks between the rack and the plungers

@sumanmondal8261 Год назад

Please create a VE Rotary fuel pump animation

@tristanbayman5788 Год назад

Best visualisation!! I have a question about slow speed two stroke starting air system: what controls the timing for when starting air stops being admitted and fuel starts being injected when starting main engine? Would be awesome if you could make a video on air compressors, reefer compressors, cascade tank and condenser, cylinder heads and sewage treatment plant. Thank you from an Engine Cadet!

@savree-3d Год назад

Will put it on the list! Thanks for the suggestion and for watching.

@kanishkaroy3478 Год назад

I could not find the exact answer actually. But this is what i think is most probable. The order of entry of starting air via starting air valve is controlled by the air distributor, which in turn follows a dedicated camshaft ( or sometimes just driven) for controlling air distributor only. This dedicated camshaft is again connected to the main camshaft which in itself executes a firing order i.e. sequence of firing of the engine units. Now I am assuming when the crankshaft attains enough rpm the pneumatic signal (low pressure air starting signal) which allows the bottle air to pass onto pilot valve and main air starting valve ( via automatic valve)is blocked just before the air control valve, ceasing the whole system operation. Now how this air signal is stopped I am not sure of....maybe it is controlled by a master and slave electronic controller which takes feedback from the rpm meter.

@hanruobing6924 Год назад

We are manufacturer specialized in auto and marine diesel engine parts since 1952. Our main parts are EURO II system: plunger, nozzle , delivery valves, head rotors, repair kits, etc. Common rail system: Injector complete and injector spare parts for CATERPILLAR, DENSO, DELPHI , BOSCH, SIMENS, CUMMINS, etc. If you have any inquiries, pls do not hesitate to contact me.

@fmcookandtasteshow5176 Год назад

Good day sir..if the injection pump..perform low pressure..is it possible that the plunger is the problem sir?..

@howardlang7636 3 месяца назад

What happens if the orientation of the the plunger is 180 deg out in relation to the sleeve?

@GrahamGalloway Год назад

Hi Savree. Very well explained and easy to follow, great video. Just one question on this type of pump, what would cause the engine to maintain full revvs when the accelerator has returned to the idle position? Can you advise what components I could check? Seems like a component is sticking in the open position? Thanks in advance.

@noeramos6157 11 месяцев назад

Did you ever get an answer for that issue because I’m having the same problem with my tractor stuck at full throttle?

@moonanpom 8 месяцев назад

stuck rack and or p/b @@noeramos6157

@mec6953 Год назад

marine engineering 😍😍😍😍😍

@user-cg7bd2wr6x 7 месяцев назад

I have read somewhere that the Vertical groove needs to have more length than the piston stroke. Why this happen?

@tanalafauzan 5 месяцев назад

Clever design and excelent explanation 🫡

@lph9164 Год назад

If we adjust vertical groove of the plunger just infront of the spill port.The fuel injection will totally stop

@christiane.fortaliza4635 Год назад

Does the governor controls the rack? Anyway, superb video. Subscribed.

@hanruobing6924 Год назад

@priyanshu3899 Год назад

Yes

@franciscoaguero9028 Год назад

Where does fuel from spill port goes?

@user-te7fq5ng8o 10 месяцев назад

This is good but explain the operation of the All parts please

@yuvaraj1386 Год назад

When the plunger is down both inlet and outlet port is uncovered and why there is no injection when the plunger is down and both ports are uncovered

@hamengkubumi Год назад

Is the tilt degree of plunger affects the oil distribution?

@hamengkubumi Год назад

May i have your email? For consultation purpose 🙏

@siggyincr7447 Год назад

Some tractors work with this sort of pump as well.

@user-nd2ql1nq5p Год назад

After i change all helix fuel pump. Engine not stop until i close fuel line.. how i can fixed

@gertkristensen6451 8 месяцев назад

what about the vacuum that occurs. it will lock piston

@nihaldsouza8215 Год назад

What causes the plunger to move up and increase the pressure of fuel?

@priyanshu3899 Год назад

The Cam is provided below the plunger.when the cam in profile the plunger pushes up..

@Danielagostinho21 Год назад

9:03 Isn't it more convenient to have them together since it's easier to have only one rack commading all pumps?

@hanruobing6924 Год назад

@JohnDobak Год назад

What gave rise to this style of pump? Why is it used over more conventional fuel pump designs? How does it rank on efficiency?

@savree-3d Год назад

It's basically a piston pump with the main difference being the helix. I would need to check concerning efficiency. Its a genius design, that much I know! 😀

@hanruobing6924 Год назад

@chinnisaiprashanth8994 Год назад

How does the timing of this pump is adjusted?

@jakub8173 4 месяца назад

It's not. In that particular example only amonut of fuel being injected can be adjusted. There are other types of jerk piston with second helix on upper edge which allows for adjusting timing but in very restricted limits only.

@alexbowie6316 5 месяцев назад

So this is the basic pump invented by Bosch for diesel fuel injection? Licensed to other companies like Zexel, Diesel Kiki and Yanmar?

@reuben.holmes.9690 4 месяца назад

Unloader valve,?

@sherazkhan-rk1be 9 месяцев назад

How suction valve works?? Why there is suction valve and not in the generator fuel pump

@mliittsc63 Год назад

So...am I correct in thinking that the reciprocation of the plunger is caused by something not shown? Is the thing causing the reciprocation also controlling the timing? Since the amount of fuel pumped per cycle is controlled by the position of the quadrant and rack (and hence the helix), am I also correct in thinking that the length of stroke of the piston is constant?

@savree-3d Год назад

Stroke is constant. The pump is operated by the camshaft.

@hanruobing6924 Год назад

@suchcone Год назад

Amazing visualisation! What I'm missing is understanding where the lifting force comes from, where the movement of the rack is controlled (does the engine adjust the rack depending on how much fuel it needs?), And what happens to the fuel that spills out - does it drain away or is there a tank? Presumably it doesn't go to waste :)

@kanishkaroy3478 Год назад

Allow me to answer. The lifting force comes from a cam and follower arrangement. The follower pushes the plunger up and down as it is controlled by the cam on the camshaft, the camshaft in turn is controlled by the engine crankshaft. The camshaft thus controls the firing order i.e the timing of the fuel injection. Now the rack movement (which controls the quantity of fuel to be delivered ) is connected to the governor which as we know works as per the load on the engine. As per the fuel that spills out I am assuming it meets the end of the re-circulation line and goes back into the buffer tank( not sure though)

@AvinashYadav-sg8cs Год назад

@@kanishkaroy3478 hey thanks explanation regarding the rack movement was excellent and simple.

@hanruobing6924 Год назад

@tylerdominelli3736 Год назад

The answer to your question is the governor. A system of weights incorporated into the pump body, driven by the pump-cam act on the governor arm, which in turn alters the position of the rack depending on operator demand. Check out the Cummins p7100, it’s a super simple system but very clear.

@tylerdominelli3736 Год назад

Furthermore, the excess fuel is referred to as “return”. The post injection event which essentially is the fuel driven through the spill port by way of the pump spring is recycled to the reservoir. If properly filtered and separated from any moisture before hand, the excess fuel should be safe to head straight to the tank, in a well serviced fuel system, of course.

@bsrt_agustinmarkanthony2208 Год назад

do some video about injector

@savree-3d Год назад

It is planned. 3D model being made now.

@ChiefEngr-GabsonAcademy Год назад

I need to support your efforts: how do I donate?

@savree-3d Год назад

Visit courses.savree.com and buy a course! 😀

@prakashk9162 Год назад

SIR RETURN FUEL WILL GO BACK TO WHERE ,AFTER SPILL PORT THAT EXCESE FUEL WHERE ITS GOING?

@hellkell8693 5 месяцев назад

Probably back to the fuel tank. The excess fuel will cool the pump n

@khaingo1502 Год назад

4:52

@Nancy28368 Год назад

Make a video on working of Tower bridge Steam engine and Bascule drive engine

@savree-3d Год назад

Steam engine is planned. Will note the others.

@naveenharish7151 Год назад

Hi sir

@savree-3d Год назад

Hi Naveen

@hainguyenofficial2743 2 месяца назад

❤

@youngsinatra69 Год назад

Sir, the fuel quantity is changing or not? Because we vary the timing so that our efficiency increase in low load conditions and more power is generated. But if we send more fuel than there this objective is not achieved. Please clear my doubt.

@priyanshu3899 Год назад

Bro..i didn't get ur question.. Fuel quantity is controlled by governor by means of rack and pinion mechanism.. Govrrner moves the rack and plunger will rotates.. This rotation of plunger contols and amount of fuel going to injector