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Why is an internal combustion engine less efficient when it is cold?
Mvansickle
The oil has less veocity therfore your engine must warm up the oil and the eninge at the same time. Also you probly have the heater on and that draws from your alternator and makes it work with puts strian on your motor
Wiki User
∙ 15y ago
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What to do if your automobile engine temperature is always cold?
either your gauge/sensor or your thermostat or both need replacing. Internal combustion engines do not run cool
What is DI?
DI means Direct Injection. Diesel engine depending on combustion categorised in Direct injection or InDirect injection Engine. Direct Injection engine combustion takes place directly above the piston. But indirect injection combustion initially takes place pre-combustion chamber and after transfered to above piston.DI engine more fuel efficient, easily start in cold condition, But Noise more.
What are cold air intake kits used for?
Cold air intake kits are used for bringing relatively cool air into a car's internal - combustion engine. Cold air intake kits are also marketed with claims of increased engine efficiency and performance.
Is cold air good for engine combustion?
yes
Why does your engine backfire when you try to start it when it is stone cold?
Incomplete combustion
How does a hybrid save fuel?
By being able to use a smaller, lower horsepower, more fuel efficient internal combustion engine than would normally be needed for a vehicle of that size and weight.By being able to run on electric power only for limited periods of time.By being able to stop the internal combustion engine when the vehicle is not moving, thus eliminating fuel wasted while idling.Each of these needs additional explanation: A vehicle needs a certain amount of horsepower (depending on its size, weight, drag, speed, etc.) to cruise at a constant speed and more horsepower to accelerate. For an ordinary vehicle the internal combustion engine must be designed to be able to provide the maximum horsepower needed for the highest rate of acceleration. But for a hybrid the internal combustion engine only needs to be designed to be able to provide the maximum horsepower needed to cruise at a constant speed at the highest speed the car is intended to be driven at, with the electric motor providing the additional horsepower for acceleration. Because a smaller, lower horsepower internal combustion engine can be designed to always be more fuel efficient across the range of horsepower demanded of it than a larger, higher horsepower internal combustion engine, the hybrid saves fuel this way.When the vehicle is cruising at a low enough speed that the electric motor is able to provide all the horsepower needed to keep the speed constant then the internal combustion engine can be stopped, entirely eliminating use of fuel until such time that it is necessary to restart the internal combustion engine (either to recharge the battery or because of a change in driving conditions e.g. more horsepower needed to climb a hill). Also when going downhill or during breaking the hybrid vehicle can recover some of the energy that would just be wasted as heat in an ordinary vehicle, by turning their electric motor into an electric generator and using it to charge the hybrid battery so that this energy can be used later by the electric motor (this is called: regenerative breaking).When the vehicle is not moving, running the internal combustion engine just wastes fuel (except to keep it warm in very cold weather, which hybrids will do if they detect the engine is too cold for proper operation), so the ability of a hybrid to stop the engine and restart it later when the car needs to move again saves fuel that an ordinary vehicle wastes.
Why does a 1996 Volvo 960 hard to start in cold temp?
With any internal combustion engine the main components to make it run are fuel and air. When an engine is cold (internal temp) there needs to be a different mixture of fuel and air to make it run. That's why older cars with engines with carburetors (the components that mixes air and fuel) you needed to let the engine "warm up" before driving. The air (ambient or outside temperature) must be within a range to optimize the combustion. On newer engines that use "Electronic Fuel Injection" (EFI) the air and fuel ratio are controlled by sensors. One of those sensors is a cold start sensor that sits right under the air intake hose on a 960. The sensor is sensitive to a range of ambient air temperatures and if the ambient temperature falls under that range i.e. it's damn near freezing!, the car will be harder to start. That is in addition to the internal cold temp of the engine metal.
Is it possible to use cold air in Internal Combustion engines?
depends what u mean...there r actual modifications for cars called "cold air intakes" in theory, the colder the air, the better the engine will perform bcoz the air is more dense and so more oxygen molecules in it. this is where nitrous comes in.....the actual nitrogen doesnt burn, but it is an extremely cold gas and simply "sprays" in more oxygen
Why rich mixture used during starting of engine?
There is no Oil lubricating your engine at a cold start up, so a rich mixture is used to try eliminating any scouring on your (internal) engine components.
What happens when you pour cold water on a heated engine?
It would probably steam. Since most of the engine's mechanisms are internal, it probably wouldn't cool it down all that much.
From what does a geothermic power plant get energy?
From the earth's heat deep under the ground. It basically runs a heat engine on the difference between the Earth's internal temperature and ambient surface temperature. The greater the difference, the more efficient the plant will be (this is true in general of all power plants no matter how they're fueled - the bigger the difference between the "hot side" and the "cold side" of the loop, the more efficient the plant is).
How does air help in the working of an automobile engine?
Air is a critical ingredient in the working of an engine. The fuel cannot ignite on its own it must have oxygen to achieve combustion. If the engine is deprived of oxygen the engine will stall. An engine's revolutions are greatly affected by the amount of air entering the engine, this is why people spend countless amounts of money on cold air intakes, turbo and superchargers. A turbo or supercharger force air into the engine making it rev higher and in turn make the car go faster. Cold air intakes work on the theory that cold air is denser and provides a bigger combustion and expands more giving the engine more power. These are achieved by extracting air out of the main airflow running over the front of the vehicle, in the bumper or hood.
