How Idling consumes More fuel in Cars?
when i search for answers i got idling of V6 and 2 litre to 3 litre engines ya sure they consumes more fuel but my question is about just an 800 cc suzuki alto , here the situation is too hot so vehicle is left idle with AC on when we wait for someone or in traffic , so my question is if i idle the car for an hour or if i travel to some place for an hour the fuel consumption is same or not? and what's happening technically inside the engine
How much fuel is consumed by a car when it is idling with the AC on?
That is tough to deduce!However, research shows an estimated fuel consumption of an idling engine is 0.6 liters / hr.That means around Rs 45 wasted while idling for 1 hour!!!SO ALWAYS TURN OFF YOUR ENGINES WHILE WAITING ON THE SIGNAL FOR THE SAKE OF YOUR POCKET!!!!References (MUST READ)Don't let your engine idleIs it more efficient to leave your car idling?Attention drivers! Turn off your idling engines
Why do bikes consume more fuel when idle?
At idling, the primary air flow passage of carburetor is blocked, air is supplied by a secondary cavity in carburetor. As we are deficient in air, the fuel does not burn completely and the engine may stop.So, tu ensure enough fuel burning, we supply rich mixture so that at least the minimum amount of energy necessary for running engine is given by burning fuel.
Why is fuel consumption more in Idling than while the engine is running on load(w.r.t automobiles)?
if you look at the efficiency curve power versus speed you find that the curve is like sort of a parabola with the maximum efficiency at about 48 miles/h. This is assuming gasoline engine of course. Hence at higher speeds and lower speeds you consume more energy including idling which, in effect, is zero speed.
How much fuel does honda odyssey consume when idling?
About 3/4 gallon per hour. Edit: it is .75 gallons per hour.
How much fuel do idling vehicles use?
I'm going to elaborate on the calculations. You can plug in your own numbers for engine size to get a reasonable assumption. And you'd want to have a more accurate measurement of your intake manifold pressure than I'm assuming here (25%) but my assumption is generally close.Let's assume a 2L engine, idling at 700 rpm, and throttled to 25% of outside air pressure, which is what I have found typical in an idling engine.The amount of fuel consumed depends on the amount of air consumed. The amount of air consumed is going to depend on:Engine displacement (2L)Engine speed (700 rpm, which is 350 cycles/min for a 4-stroke)Volumetric efficiency - how efficiently the engine exchanges airManifold air pressure - how much is the engine being throttled?For the sake of argument, let's assume the volumetric efficiency is 100%. Let's also assume the engine is running at sea level on a standard 15C day, so the manifold air pressure is equivalent to the air density at sea level * 25% (because it's throttled to idle)Air consumed will be:displacement * cycles * volumetric efficiency * manifold air pressure2L = 0.002 m^3Air density is 1.225 kg/m^3 * 0.25This gives us:0.002 m^3 * 350/min * 100% * 1.225 kg/m^3 * 0.25= 0.214 kg/minFuel used would be 1/15 of that (actually 1/14.7 in stoichiometric conditions), or 0.0143 kg/minat 719.7 kg/m^3, that works out to 0.02 L/min0.02 L/min is 1.2 L/hr, or 0.32 gal/hr
Does a car consume more fuel when coasting downhill than when idle and why?
It depends on the car, ALL car related questions have different answers based on the car being driven.I have logged my fuel mileage in my Camaro and you do get better fuel mileage using neutral as often as possible, a significant amount in fact. I averaged 13.7 mpg without coasting and 17.1 mpg coasting in neutral. The reason for this is while the car is in gear, the engine rpms are much higher than idle! The fuel pump is driven by the cam, so naturally, more fuel is being pumped into the engine at ANY higher engine speed than idle. It should be noted that I don't have overdrive in this particular car however!There is a documented case of someone who drives a Camaro JUST like mine driveline wise, and averaged 30, 30!!!!Mpg coasting from Madrid, Spain to the coast. He DOUBLED his fuel mileage by coasting in neutral, and has the logs to prove it.
How much fuel is wasted while cars sit idling at traffic lights? Have any studies been done to measure this?
The US Department of Transportation states: There are more than 330,000 traffic signals in the United States. It is estimated that over 75% of these signals could be improved by updating equipment or by simply adjusting and updating the timing plans. It is further estimated that poor traffic signal timing accounts for 5-10% of all traffic delay on highways or 295.8 million vehicle-hours of delay on major roadways alone. Traffic signal retiming is one of the most cost effective ways to improve traffic flow and is one of the most basic strategies to help mitigate congestion. Optimizing traffic signals can produce benefit cost ratios as high as 40 to 1. The costs for retiming traffic signals generally range from around $500 to $3,000 per intersection. This report estimates that: Reduction in fuel consumption of up to 10%. Nationwide this would amount to a savings of almost 17 billion gallons of motor fuels per year.
Car bogs down, low power, rough idle, excessive fuel consumption?
Ok i have literally been working on this one for months. I have a 1991 mitsubishi 3000gt sl non-turbo. I put a remanufactured engine in it. As it is warming up it idles rough like a misfire but rpms are consistent. Right before full operating temp it bogs down and almost dies. If i hit the gas during this time it will backfire. Then it straightens up after about 30 seconds and is fine for the rest of the trip but still idles rough. My fuel mileage is about 15mpg. Originally it was up to 24. It has low power because it doesnt pull nearly as hard as the last engine did even though it had 186000 miles on it. The engine now has 2200 miles on it. I tore it down to check the timing and it was dead on. Checked ignition timing and it is good too. I changed out my throttle body, and cam position sensor with a spare and it made no difference. I have no codes at all in the computer. Oxygen sensor is new. Sprayed water on the exhaust manifolds and found that all six cylinders are firing. Computer was rebuilt just before i got the car and they last for around 15 years. I am on a budget so i dont want to just keep throwing parts at the car hoping something sticks. Thank you to anybody who can help