i often see diesel 2-stroke engine use in big power application (like high speed ship engine) it is possible to fit one of these engine into a passanger car?  what is the pro and con between a 2-stroke and 4-stroke diesel engine?
124055
I've dealt with two-cycle diesel's before and the above answer is right.  The EPA is forcing two-stoke diesel's out of production because the emissions are horrible on them.  A two-stoke diesel really only develops it's power at high rpm's so it's best used in an application where you're running hydraulics or something that needs a constant RPM.  Think about 2 stroke motorcycle engines.  They run a higher rpm's than typical car engines.\n\nThe machines I ran had a two stroke diesel with both a supercharger and a turbocharger and in a 8-12 hour workday depending on how much they were used they would run through the better part of 50 gallons of diesel and these were only 4 cylinder diesels (rather large 4 cylinder diesels though).\n\nActually Volkswagon still produces a few models that have an optional diesel engine, but it is a 4-stroke engine.  The cars get almost 50 miles per gallon highway.  I know that a VW diesel will probably be the next car i purchase.\n\nAnother pro of diesel engines is that aside from being more efficient (diesel fuel has a higher density than gasoline), is that they have more torque.  I can't explain this one but my guess would be that due to the much higher compression ratios required in a diesel engine to force detonation that the detonation has greater force behind it than compared to a gasoline engine.
418098
The simplest answer is Intel Core 2 Duo is definitely faster than Intel Core Duo.  In other words, Core Duo is the first version of Intels dual core processors(2 processors in one) and Core 2 Duo is the second version.  \n\nThe longer answer is that within the last few years, everyone has realized that core speed (such as the 3.4Ghz or 1.86Ghz you mentioned) are not the only thing that determine speed.  Think of it like this, imagine that there were two autos you were thinking of buying.  One is a huge truck with a big engine, maybe a 6 Liter engine.  The other is a small sports car with only a 3 Liter engine.  Even though the truck has the bigger engine, the sports car will actually be faster.  So if speed is what you are after (which is really the main reason to buy a processor) then you will buy the sports car.  \n\nBottom line, buy the Core 2 Duo.
39292
the 3 cylinder will have more horspower..just cuz for the simple fact it is DOHC...but where it gains in horse power it gonna lack in torque...the SOHC will produce more torque at low RPM to get the vehicle moving..the DOHC will gernerate more HP at high RPM....example i used to have a 98 neon DOHC..my friend had a 95 cavelier SOHC..both 4 bangers...when we race he can take me off the line due to the torque but once the DOHC reaches bout 3500RPM it pulls hard and can cathc up and pass...\ni knowall that is kinda unessesary info but....i would go with the 4 banger for the simple fact of the extra piston and the better torque curve
387264
Making something go fast is not all that difficult much of the time, it is about making it *controllable*. Speed (power) is nothing without control.\n\nIn the air, not only do you have the option of full 360 degree movement options (esp with rotating wing aircraft), you do not have "blind corners", slippery road surfaces and sodding speed cameras.\n\nIn many ways we DO embrace much of the other technology though, from lighter materials, more aerodynamic design and advanced navigational facilties (FRED / GPS) etc\n\nOne thing that has never seemed to make it to the road is an engine with twin spark plugs - a requirement on all conventional engined aircraft. Not only does it give backup (less critical on the road) but ALSO makes a fair difference in economy. When switching magnetos (ignition) from BOTH to Left or Right, a drop of 50-100 RPM is not uncommon - suggesting strongly that the additional spark does indeed improve effieicney and power output.\n\nAeroplane engines are also happy to be leaned out considerably more than automobile engines. Again allowing for greater economy AND power.\n\nAre there any other technologies you are thinking of specifically that you think should be incorporated into cars?
108438
The big engine weighs more and uses more fuel.  If you are regularly carrying giant loads up steep hills, or pushing a really enormous vehicle, the 400 is the way to go.  But for everyday driving, you really don't need a whole lot of power.  A simple 2-liter four will get you there just as fast for just over half the fuel.\n\nThere are grey areas.  A big, torquey engine geared way down can actually deliver pretty good efficiency. A small engine that's overworked can be inefficient.  A 400 (over 7 liters!) vs a 2-liter is a no-brainer, the 2-liter will use less fuel every single time.  But there are cases, particularly on American vehicles, where the v6 will deliver both more power and better economy than the 4.\n\nRule of thumb: so long as you can scoot around happily without pushing too hard on the gas pedal, your engine is big enough.  Most engines are bigger than they need to be.
78332
A flex fuel car. the gas is generally cheaper but harder to find. The engines are regular engines and no expensive hybrid batteries to replace. Or they have the clean diesel cars now too.
297911
Probably the dodge hemi..I think the truck doubles the top fuels weight. The dragster would probably just smoke the tires. If it was a diesel than for sure the dodge.
287642
Diesel engines are typically converted to duel fuel engines these days, especially due to the drastic increase in diesel fuel relative to natural gas. The uninformed have above  noted that the absence of spark plugs make the conversion impossible. However this is of course quite untrue. During the intake stroke (of 4 strokes)  90% natural gas and 10% diesel (duel fuel!!) is ported (from separate sources) into the cylinder. This is enough diesel that compression will ignite the diesel and hence ignite the natural gas. No spark plugs are therefore required. The duel fuel engines run significantly hotter but evidently operate very well.
615480
I think the above person is correct is the physics, elementary as it may be. However there is no engineering insight present what so ever.  Despite the engr smarts remark. Though he did say "a little" engr smarts. An overstatement.  4 atmospheres is very very common (14.7psi/atm  x 4atm =58 psi) so pressure obviously is not going to be an issue. The issue is a challenge. Without the help of a processor, how do you open the supply and exhaust valves 8.33 times per second? 2 supply and 2 exhaust valves must actuate 8.33 times per second. That’s pretty quick. A PLC could do it of course. But it costs money, as stated. Perhaps you could use a cam system where each cam opens each respective valve at the appropriate time. Then all you have to control is the speed of the camshaft. The 4/2 valve ought to do the trick. As long as it can handle the duty cycle.
151318
That 'Hard Luck' knows NOTHIN about cars!  By adding more air to your engine, your air-fuel mixture improves resulting in less fuel required to get the same if not better effect.  So, you get better fuel economy and possibly up to 10 extra ponies squeezed under the hood.  I have witnessed this first hand with our Honda fourwheeler after installing a K&N air filter and a custom Glass pack exaust. It sounds fricken AWESOME!
140654
Well, I've found a way to Convert Gasoline into Propane. But, it's Illegal to do so on any U S A Vehicle Built from 1996 to the Present.This is the EPA-OBD II Law that Mandates that all Vehicles must Run at 14.7 Parts of Air to 1 Part of Fuel. Any Deviation, even if Fuel Economy is Improved, and Emissions are Lowered, and the Vehicle will Fail Inspection, and will be Illegal to Operate. This is Insane! My System, which is very Compact and Safe utilizes Low Pressure Air to Produce 100 Parts of Air to 1 Part of Fuel.Bottom line, 50 + MPG with even the Largest SUV, and 10 Times Less Air Pollution. Also, this will actually Result in far more Engine Power, and longer Engine Life! I'm not the First, only the Latest to do this. I've been to the US Patent Office, and Looked at other Diagrams of Fuel to Vapor Systems that have been Bought Out, and kept off the Market. The Pogue Carburetor is an Excellent Example. It is Documented at the US Patent Office as having Achieved 100 + MPG with a Flathead Ford V-8 Engine that, with a Conventional Fuel System was at best 15 MPG ! Engines Run best on Vapor, [100 to 1] not Atomized Liquid, [14.7 to 1]. If this is Wrong, then how is it that Engines DO Run on Propane? To do so by Conventional Means involves Utilizing a Large, Cumbersome, Expensive Tank, which must be Hauled with the Vehicle. Also, Expensive Tank to Engine Metering Equipment. And, the Extra Hassle of Refilling the Tank. So much Hassle, that even with Gas. going back to $3.OO Per Gallon, it's just not Worth It! All Petroleum is Essentially the Same on a Molecular Level. Only the Dispersal is Altered. All Petroleum comes from the same Place, Earth! But, when the "Big Brother Box" is Hooked Up to any OBD-II Vehicle, like Yours[?] It has to Be 14.7 to 1 or Else! Hybirds aren't the Answer. At Highway Speed, the 14.7 to 1 Gas Engine takes over, Plus the Heavy, Expensive Batteries have to be Hauled as Well. Just Like the Propane Tank.Cheap, Safe Hydrogen is the Ultimate Answer. As long as there is so much Profit in Petroleum, that's not going to Change anytime Soon. I Think that My Vapor Unit could possibly be a Step toward Converting Tap Water to Hydrogen, but I don't have the Resources to Conduct the needed Research. Water Converted to a Cold Fog would be a lot easier to Convert to Hydrogen. In the Short Term, I'd like to Convert as many Older Vehicles as Possible to Vapor Fuel, and Donate them, Starting with the Local Meals On Wheels Program.There are Many People willing to Help the Homebound Elderly, but with the Cost of Fuel, it's becoming Increasingly Difficult to do so. Also, Volunteer Veterans' Service Organizations. We All Owe Them so Very Much! And, Homeless Shelters. See, Greed has Stopped the Whole Fuel to Vapor Thing every Time! And That OBD-II Law....To Donate to Charity would be such a Slap in the Face of all who have Stopped Vapor Fuel! Money isn't everything. Take a Deep Breath of Clean, Fresh Air ! How do You put a Price on That? Here's a Website that's a Couple of Years Old, but Please take Time to Read It all. Very Informative! http://energy21.freeservers.com/bookrep.html Thanks for Asking the Question, and giving Me the Opportunity to Respond! Nothing will Change, but at least We can Talk about It!
434529
Pls go to http://en.wikipedia.org/wiki/Carnot_engine
176066
Turbo is a good way to increase your car's power. Also, a bigger intercooler as well as new piping kit will help moter breath better. A new air filter will give you some extra power. A good exhaust and a new ECU program will help you a lot. After these your power must be 500+ PS, believe it or not. I have seen M3 over 1000 PS.
147244
Go for a skid mounted portable sound proof unit for flexible operation,so that your vehicles is not tie down with the generator,you also need to transport fuel,maintenance etc.The vehicles serve as a duel purpose vehicle.Weight,high cost depending on the model of diesel engine and alternator and your requirement
405413
If the thickness of the vessel wall is the same in both as well, then theorhetically you would get slightly  higher flow from the one 4mm vessel than the 2-2mm vessels since the one of the wall thicknesses is eliminated.
53172
a 383 is a stroked 350....a stroked engine makes alot more torque there for needing to change gears less you can pretty much run the same gear around the whole track
191820
it depends on how good the engine is...generally the higher ps will consume more...but you cant use it as a rule of thumb