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Will a turbocharged V8 have less turbo lag than a smaller engine?
Wiki User
∙ 10y ago
Yes the larger the engine or smaller the A/R the faster the turbo will spool for a given turbo. Given more displacement you can spool up as fast/faster with a bigger A/R housing than a smaller engine and reduce backpressure, freeing up horsepower. A basic rule of thumb I've heard from manufacturers:
(on 1 turbo per bank 2L, twin turbo v8)
.48 a/r for fast throttle response/low end TQ, but limits topend
.68 a/r for full boost mid 2000/3000rpms and up
.81 a/r for drag race only cars 4500+ power only.
with 2.6 or 3l per bank you could step up one size for the same response, I.E. the .68a/r would act like a .48 a/r.
Wiki User
∙ 10y ago
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What was the first turbocharged tractor?
The first Turbocharged production wheeled tractor was the Allis Chalmers D19 Turbo Diesel. It started production in 1961. Had a 262 Buda inline 6, indirect injection diesel with a Turbo. It was a D17 series III and IV diesel engine with a turbo more or less.
Why diesel vehicles have turbocharged engines?
In order to use less gas, the size of the engine is reduced, but it also reduces its power. A turbocharger is then added to increase the power of the engine.
Why is a small engine size more efficient?
There are 3 main reasons a small engine is more fuel efficient than a larger engine: 1. Small engines are lighter. Less weight is good for fuel economy. 2. At a given engine speed & load the throttle valve is more open on a small engine than on a large engine. This means less (wasteful) work is done pulling the gas into the engine to provide a particular amount of power at the crank shaft. Incidentally, this is one reason diesel is comparatively efficient next to gasoline engines - a diesel vehicle has no throttle valve. 3. The surface area of contacting parts is smaller in a smaller engine (there are less pistons) and so there are less frictional losses. Here are some caveats: If the smaller engine is made to produce as much power as the larger engine by turbocharging then at peak power the smaller turbocharged engine is less efficient than the larger non-turbocharged vehicle due to losses across the turbo. The throttle valve is completely open in this case (Wide Open Throttle) and so both vehicles have minimal loss here; frictional losses are slightly higher with the larger engine but this does not offset the losses across the turbocharger of the smaller engine. However, most of a vehicle's time is not spent at peak power and, for more moderate driving, the increased efficiencies due to less weight, less friction & less loss across the throttle valve more than offset the additional loss across the turbo. Larger engines generally are capable of producing more torque at a given engine speed. This means they can have taller gearing and so, for a given vehicle speed / load, can run at a lower engine speed than a smaller engine. Running at lower engine speeds to produce a particular power output is benifical because friction losses are lower (they are proportional to engine speed) and throttle losses are lower. I'm not sure what this means in numerical terms but at the end of the day the OEMs are working directionally towards smaller rather than larger engines and so I think it is fair to say that the increased torque / higher geared / lower engine speed effect does not offset all the other factors.
Do turbo charged cars use more fuel?
It depends very heavily on how you drive. If you drive a turbocharged car gently, never going past 4000 on the tachometer, then no. That is the main advantage of a turbo over a supercharger. When you do go past 4000 RPM's however, the turbos kick in, forcing more air and fuel into the engine, giving you more power. Naturally, since you are getting more power, you are using more fuel. In mixed driving, turbocharged cars will tend to get only 1 or 2 MPG less than their non-turbo counterparts, as opposed to superchargers which affect the efficiency greatly. in some cases (such as the golf gti) the turbo will return slightly higher HIGHWAY fuel economy numbers, simply because in situations where you need to accelerate, you don't have to down shift in the turbo when you would in the car without the turbo.
Does a turbo decrease fuel consumption?
A turbo will increase your gas mileage, yes. It does not run off power from the engine, it runs off the exhaust system to boost engine power. Your engine has to work less for the same power.
Why are plane crashes more common on private planes?
they are smaller and have less power and a smaller engine.
Gas mileage 1984 300zx turbo?
aproximatly 15 to 20mpg, a little less then the n/a engine.
Will a 1999 dodge diesel turbo work on a 1992 dodge diesel?
Yes it will, the turbo on a 99 is much smaller (12 cm) than a 92 (18-21 cm) the smaller turbo will give you more boost at lower RPMs, but less at higher RPMs. The down pipe on a 92 will need to be modified to hook up to the turbo but everthing else will be fine.
What are the benefits of twin scroll turbo chargers in the performance application?
The twin scroll turbo chargers take less time to spool and it reacts faster instead of a single scroll turbo. Plus, it packs a bigger turbo boost to the engine u applied it to instead of a normal turbo.
Does the v6 passt have engine sludge?
While a V6 Passat can sludge (as can any engine), it is not nearly as common as sludge issues on the turbocharged 1.8 liter engines. The reason for the difference is that the heat from the turbo, combined with an inadequate oil capacity (under 4 liters) breaks down the oil and forms sludge. The V6 engine, being a non turbo and having a larger oil capacity is less prone to sludge. However, as is the case with any engine, prolonged oil change intervals and cheap oil/filters will increase the risk of sludgeing over time. A good site to check for more information is Passatworld.com http://www.passatworld.com/forums/
Can you put a turbo engine in an non turbo car?
Yes, this is possible. However, it involves a significant amount of components and systems not currently in the non-turbo car and it is generally easier, less expensive and more reliable to purchase the turbo car (if one is available).
Which car is faster a evo or an integra?
why even ask? an evo! evo has an AWD turbo charged engine vs a fwd na engine with way less HP.
