does more horsepower mean faster acceleration?


Good oil lubrication, since higher engine speeds demand more lubrication.(3.) How do I get a higher revving engine?Us car guys obviously love more power, since we can go faster. A: They don’t really have more torque than conventional combustion engines, it’s more about the delivery of its performance that people are amazed by. Whether metric or imperial, both equations have a constant divided at the bottom. For example, cruise ships have a huge amount of Horsepower, sometimes in the hundreds of thousands, but since there’s so much weight/drag to move against they can only keep going so fast.Toque/weight is a much more accurate way to compare car’s acceleration abilities, assuming both cars have similar structures. Why don’t Formula 1 cars have torque? So a turbocharged 2.0L engine theoretically now has as much displacement and torque as a 4.0L. So how do we get more torque? Because the EV delivers its max 774 lb-ft of torque at 0 rpm, it can out-accelerate (2.4 seconds to 60 mph) the 1,100 lb-ft Bugatti (2.5 seconds to 60 mph) because the Bugatti doesn’t hit peak torque until 1,180 rpm. Maybe if elk or moose were more available at the time, Watt would’ve used them. A horsepower is a unit of measurement used to denote power or the “rate at which work is done” by an engine or motor. Direct drive, with a ratio of 1:1, means your engine will provide the torque sent to the rear differential and your wheels will rotate at the same rpm as the engine.

Displacement:Displacement determines how much you can compress air in the engine, and the more you can compress the more air you can fit into the engine. 1 atm from the engine’s ability to suck in air and one 1 atm from forced induction. The lower gears have underdrive ratios, like 3:1, meaning you’ll have greater torque (and thus greater acceleration), but a lower top speed since the engine revs higher than the wheels. Torque can be increased one of two ways: Getting more air to the engine or through the transmission. Join Yahoo Answers and get 100 points today. Horsepower is the most commonly used figure to denote a car’s power and most often relates to how much power a car’s engine develops at the crank of an engine, not at the tires. High Power is only useful at high speeds when there is a lot of drag against the car.

Also, don’t forget that adding a larger bore and stroke are other ways to increase displacement and thus torque. More horse power doesn't always mean faster times, Point and case me and my friend have the same year and style of car. Your car’s top speed is limited by both its weight (and your weight, fatty) and the drag forces caused by both the air and tires.
By allowing the engine to rev higher. Sales! Suppose a theoretical car with 200 horsepower and 200 lb-ft of torque, with the torque arriving at 6,000 rpm, squares off against another theoretical car with 200 horsepower and only 150 lb-ft of torque, this time arriving at 1,500 rpm and staying constant until its 6,500 rpm redline. Instead, I’ll just summarize the basics that are accepted as fact by everyone. That’s why we have transmissions, to multiply the torque from the engine enough that we can move our vehicles. In essence, HP, BHP, PS, CV and kW all refer to the amount of power that an engine produces. If you want faster acceleration, you’re going to need more torque. And without getting to much into angular velocity conversions and such, the equations for power are: Notice some things about these equations:(1.) Whether in Horsepower, Kilowatts, or that weird German unit for Horsepower, Power is what matters for pure speed. I see that so much at the track with the stupid little Hon-duh kids...completely gutting the interiors on their Cvics while still running a 16 second 1/4 mile time....I just shake my head an laugh. For an EV, that power is always ready to be immediately transmitted to the wheels. However, these engines rev to monstrously high levels, sometimes 20,000 rpm, and thus can make over 800 HP (600 kW). Acceleration and speed, the two terms “quick” and “fast” respectively denote, are actually very different, however, and relate directly to horsepower and torque. Here’s the math for you lovers of equations! Engine revs:Have you ever noticed that Honda’s engines not only tend to rev high, but also make decent power for their small displacement? When it comes to acceleration, really power doesn’t matter all that much. So let’s say you start off with a 15-inch wheel on your 1.6-litre VW Golf GTI which produces a maximum torque output of 350 Nm. We’re here to be expert guides in everything How-To related. This is assuming the turbo works for the whole rev range at peak boost, though. So what really is the difference between torque and power? Higher elevations with less air pressure will decrease the natural compression of the engine and thus make them less torquey.In order to get more compression with a naturally aspirated engine, you need to give it more displacement. Read more.

What is horsepower? 1. In the case of cars, “the rotational equivalent of linear force.” Essentially, it’s the amount of force applied to an object with a twisting motion, i.e. your car’s 0-60 mph figure. Horsepower still matters and is a highly useful metric, there’s just a disproportionate emphasis placed on horsepower. Comment below and let’s talk! However, torque is just as important, in some cases more important, than power. A: Well, the auto industry tried that, and...yeah. A naturally aspirated engine has a maximum compression of 1 atmosphere (atm) of air at sea level, that’s the most it can do assuming everything is perfect. A lower yet flat torque curve which provides a greater value for the average torque over the whole rev range will lead to better acceleration. and you snatch out three hundred pounds and slap on four to five hundred horses with say 479 ft lbs torque you're going nowhere till you finally catch traction. However, power/weight really only matters for how easy it is for you to maintain speed. Also, OHC designs allow for faster camshaft speeds since there’s multiple camshafts rather than one.(4.) If I fill unbranded gas from street corner station in my new car, will it harm the engine or motor parts? I always thought that suspension played a huge roll in the overall scheme of things as well. Here’s what they all mean and why they’re used. That relates to both horsepower and torque. It’s easy, it’s known, and it looks great splashed across marketing. How much torque is going to the wheels? construction, so that there is less reciprocating mass to impede on higher piston velocities. I have been told a lighter vehicle would get you down the drag strip or roadway more efficiently too. Diesels, like the gasoline engine, seem to be on their way out. Observing a horse could turn a mill wheel 144 times per hour, and that the wheel had a 3.7-meter radius, Watt determined the horse could travel 2.4 × 2π × 12 feet in one minute.

All about Horsepower, Torque, speed, and acceleration. Horsepower and torque, along with where each fall on a vehicle’s engine rotation per minute (rpm) range, as well as gearing, determine the car’s speed and acceleration. The higher gears have overdrive ratios, like 0.8:1, which means you have less torque going to the wheels but you can go faster since the wheels can rev higher than the engine. He has more horse power and I have more torque and my car runs faster times. Brake-horsepower is commonly used by countries outside the U.S. and denotes the engine’s power at the tires of the car, not at the crank. Lightweight piston, valve, crankshaft, etc. So to start with I naturally consulted Google. Can I stil pass emissions with flowmaster catalytic converters and a straight pipe. High revving engines need fast piston speeds. Calculating transmission torque to the wheels is actually quite easy if you assume a lossless (aka no friction) system. A pound-foot is the moment of inertia on an axis that applies one pound of force at a radius of one foot. Track cars and race cars are known for their high revving engines and loads of power. To obtain a metric horsepower, a horse was attached to a 75-kilogram weight on the end of a pulley and was then timed as to how quickly it could lift it by one meter. Whether you want high power/weight or torque/weight (why not both?)

This is where power comes into play. Still have questions? A newton-meter is a unit of torque in the metric system and one foot-pound is equal to 0.73756 newton-meters. Thank you for providing us with the direct-port nitrous injection, 4-core intercoolers, ball-bearing turbos, and titanium valve springs, Best Engine Flush: Keep Your Motor Running Strong, An engine flush is an affordable way to maximize your engine health, Best Cold Air Intakes: Give Your Car Extra Power and Boost, Give your engine extra acceleration and horsepower with a cold air filter, Best Octane Boosters: Get Peak Performance and Efficiency with Every Fill-Up, The best octane boosters for maximum efficiency and performance, Best Ignition Coils: Enhance Your Car’s Fuel Consumption, Guard your car against engine mishaps with these top ignition coil sets.
So higher displacements lead to more torque.“Now hold up, there’s many low displacement cars cars that have a lot of torque since they’re turbocharged”, you might say.Well I’m here to let you in on a little secret, forced induction (turbocharging & supercharging) is just artificial displacement. In first gear I have a ratio of 3:1, and my final drive (differential) is 2.75:1. 1 HP is the equivale… High bore/stroke ratio.

This equation was then made to equal one metric horsepower, which is actually 98.6 percent of an imperial or standard horsepower when compared.

Notice in the old Formula 1 engine crank I posted below how short the strokes are. You want to be at your highest top speed possible all of the time, so Formula 1 cars are designed to maintain high speeds and thus stay in the high rpms where all of the power is. It launches off the line every time under control even with the 390lbft of tq in my light car on unrated tires lol. Feel free to post any comments, questions, suggestions, etc.

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