Description : What causes engine knocking?
Last Answer : Engine knocking is caused by the premature detonation of fuel in the engine, which can lead to decreased performance and engine damage.
Description : What happens if you use a petrol with a lower octane rating than recommended for your engine?
Last Answer : Using a petrol with a lower octane rating than recommended for your engine can cause knocking or pinging during combustion, which can damage the engine over time.
Description : Can premium diesel be used in any diesel engine?
Last Answer : Premium diesel can be used in most diesel engines, but may not provide any significant performance benefits in engines that are not designed to run on premium fuels.
Description : Can premium petrol be used in any petrol engine?
Last Answer : Premium petrol can be used in most petrol engines, but may not provide any significant performance benefits in engines that are not designed for high-octane fuels.
Description : Can E85 petrol be used in any petrol engine?
Last Answer : E85 petrol can only be used in certain types of engines that are designed to run on high-ethanol blends.
Description : Can E10 petrol be used in any petrol engine?
Last Answer : E10 petrol can be used in most petrol engines, but may not be suitable for use in older or high-performance engines.
Description : Can biodiesel be used in any diesel engine?
Last Answer : Biodiesel can be used in most diesel engines, but may require modifications to the engine or fuel system.
Description : Can biofuels be used in any petrol engine?
Last Answer : Some biofuels, such as ethanol blends, can be used in most petrol engines. However, some types of biofuels may require engine modifications or a special type of engine.
Last Answer : E10 petrol can be used in most petrol engines, but some older or high-performance engines may require a different fuel type. It's important to check your vehicle's owner's manual for guidance.
Description : Can LPG be used in any petrol engine?
Last Answer : No, not all petrol engines are designed to run on LPG. Vehicles must be equipped with a special LPG conversion kit in order to use LPG as a fuel.
Description : Can you use biodiesel in a petrol engine?
Last Answer : No, biodiesel is designed for use in diesel engines and can cause damage if used in petrol engines.
Last Answer : No, biodiesel
Description : The tendency of knocking in CI engine reduces by (a) High self ignition temperature of fuel (b) Decrease in jacket water temperature (c) Injection of fuel just before TDC (d) Decrease in injection pressure
Last Answer : Ans :c
Description : The knocking in spark ignition engines can be reduced by a. Retarding the spark. b. Increasing the engine speed. c. Both a and b d. None of these.
Last Answer : ANSWER c. Both a and b.
Description : If petrol is used in a diesel engine a. higher knocking will occur b. efficiency will be low c. low power will be obtained d. black smoke will be produced
Last Answer : ANSWER a. higher knocking will occur
Description : The knocking in spark ignition engines can be reduced by a. Retarding the spark. b. Increasing the engine speed. c. Both a and b. d. None of these.
Last Answer : ANSWER c. Both a and b
Description : The compression ratio cannot be increased beyond certain limit as it results in a. auto-ignition of fuel b. detonation c. engine knocking d. all the above
Last Answer : ANSWER d. all the above
Description : Testing of the knocking characteristics of petrofuels is done in a __________ engine. (A) Carnot (B) CFR (Co-operative fuel research) (C) Stirling (D) Diesel
Last Answer : (B) CFR (Co-operative fuel research)
Description : A knocking sound is produced in the engine when the fuel (a) Burns fast (b) contains lubricating oil (c) Burns slow (d) contains water
Last Answer : Burns fast
Description : With increase in __________ Knocking tendency in a spark ignition petrol engine decreases. (A) Supercharging (B) Wall temperature (C) Compression ratio (D) Engine speed
Last Answer : Option D
Description : Compare SI and CI engine on the basis of air-fuel ratio, power output, emission and knocking.
Last Answer : Parameter SI engine CI engine Air-fuel ratio air-fuel ratio is 14.7:1 air-fuel ratio is 20:1 to 70:1 Power output Power output is Less than CI engine due ... Knocking take place at the end of combustion. Knocking take place at beginning or start of the combustion.
Description : What are some advantages of using biodiesel?
Last Answer : Biodiesel is renewable, domestically produced, and can be made from a variety of feedstocks. It also has lower emissions of particulate matter, carbon monoxide, and sulfur than petroleum-based diesel fuel.
Description : What is biodiesel?
Last Answer : Biodiesel is a renewable fuel made from vegetable oils, animal fats, or recycled cooking grease. It can be used in diesel engines without modification and produces fewer greenhouse gas emissions than petroleum-based diesel fuel.
Description : What is the difference between gasoline and diesel fuel?
Last Answer : Gasoline and diesel fuel are both used as fuels in internal combustion engines, but they have different chemical compositions and combustion properties. Gasoline is lighter and more volatile than diesel ... energy content than gasoline, but it is also more prone to producing particulate emissions.
Description : What are some potential environmental impacts of gasoline use?
Last Answer : Gasoline use can contribute to air pollution, climate change, and environmental degradation through the extraction, refining, transportation, and combustion of fossil fuels.
Description : What is reformulated gasoline?
Last Answer : Reformulated gasoline is gasoline that has been specially formulated to reduce emissions of certain pollutants, such as nitrogen oxides and volatile organic compounds. It is required in certain areas with high air pollution levels, such as major cities.
Description : When was leaded gasoline phased out in the United States?
Last Answer : Leaded gasoline was gradually phased out in the United States between the 1970s and 1990s, with the final phase-out taking place in 1996.
Description : What is the difference between leaded and unleaded gasoline?
Last Answer : Leaded gasoline contains a compound called tetraethyl lead, which was once used as a fuel additive to boost octane ratings. Unleaded gasoline does not contain this compound and is considered less harmful to the environment and human health.
Description : What is the octane rating of aviation fuel?
Last Answer : Aviation fuel typically has an octane rating of 100 or higher, as aircraft engines require high-octane fuels to operate efficiently and safely.
Description : What is the octane rating of E85 gasoline?
Last Answer : The octane rating of E85 gasoline can vary depending on the specific blend, but it is typically around 105.
Description : What is the octane rating of premium gasoline?
Last Answer : The octane rating of premium gasoline is typically 91 or 93.
Description : What is the octane rating of regular gasoline?
Last Answer : The octane rating of regular gasoline is typically 87.
Description : How is octane rating measured?
Last Answer : Octane rating is measured using a standardized test engine that simulates the conditions inside a typical internal combustion engine. The test measures the fuel's ability to resist knocking under various operating conditions, and the resulting octane rating is the average of these measurements.
Description : What is octane rating?
Last Answer : Octane rating is a measure of a fuel's ability to resist "knocking" or "pinging" during combustion, caused by the air/fuel mixture detonating prematurely in the engine. The higher the octane rating, the more resistant the fuel is to knocking.
Description : What are some disadvantages of using E85 gasoline?
Last Answer : E85 gasoline can be less energy-dense than pure gasoline, which can result in reduced fuel efficiency and range. It may also not be widely available in all areas and can be more expensive than regular gasoline.
Description : What are some advantages of using E85 gasoline?
Last Answer : E85 gasoline can provide lower greenhouse gas emissions, reduced dependence on fossil fuels, and support for the agricultural sector by creating demand for crops used to produce ethanol.
Description : What is E85 gasoline?
Last Answer : E85 gasoline is a blend of gasoline and up to 85% ethanol by volume. It is commonly used as an alternative fuel for flexible-fuel vehicles that can run on either gasoline or ethanol blends.
Description : What are the disadvantages of using ethanol-blended gasoline?
Last Answer : Ethanol-blended gasoline can be less energy-dense than pure gasoline, which can result in reduced fuel efficiency and range. It can also be more expensive to produce and distribute, which can increase the cost of fuel for consumers.
Description : What are the advantages of using ethanol-blended gasoline?
Last Answer : Ethanol-blended gasoline can help reduce dependence on fossil fuels, lower greenhouse gas emissions, and support the agricultural sector by creating demand for crops used to produce ethanol.
Description : What is the difference between E10 and E15 gasoline?
Last Answer : E10 gasoline contains up to 10% ethanol by volume, while E15 gasoline contains up to 15% ethanol by volume. Ethanol is a renewable fuel made from plant material that is often blended with gasoline to reduce the amount of fossil fuel needed to power vehicles.
Description : Can using a lower octane gasoline than recommended harm your engine?
Last Answer : Using a lower octane gasoline than recommended by the manufacturer can cause engine knock or detonation, which can damage the engine over time.
Description : Can using a higher octane gasoline than recommended harm your engine?
Last Answer : Using a higher octane gasoline than recommended by the manufacturer is generally not harmful to the engine, but it may not provide any additional benefits and can be more expensive.
Description : What is the difference between regular and premium gasoline?
Last Answer : Regular and premium gasoline differ in their octane ratings, with premium gasoline having a higher octane rating than regular gasoline. Higher octane fuels are typically used in high-performance engines to prevent engine knock and improve engine efficiency.
Description : What is gasoline made of?
Last Answer : Gasoline is primarily made of hydrocarbons, which are molecules composed of hydrogen and carbon atoms. The exact composition of gasoline can vary depending on the specific grade and formulation, but it typically includes a mix of small and large hydrocarbon molecules.
Description : What is the process of refining crude oil into petrol?
Last Answer : The process of refining crude oil into petrol involves a series of complex chemical processes, including distillation, cracking, and blending, to separate and transform the various components of crude oil into the desired fuel products.
Description : What is the difference between petrol and diesel fuel?
Last Answer : Petrol and diesel fuel are both types of liquid fuel used to power internal combustion engines, but they have different chemical compositions and properties. Petrol is lighter and more volatile than ... diesel is heavier and less volatile, and it is typically used in compression-ignition engines.
Description : Is leaded petrol still used in any countries?
Last Answer : While leaded petrol has been largely phased out in most countries, it is still used in some parts of the world, particularly in developing countries where alternative fuels and technologies may not be as readily available.
Description : When was leaded petrol phased out in the United States?
Last Answer : Leaded petrol was largely phased out in the United States in the 1970s and 1980s, with the Clean Air Act of 1970 and subsequent regulations playing a key role in reducing its use.
Description : Why is leaded petrol harmful?
Last Answer : Leaded petrol is harmful because it releases toxic lead particles into the air when burned, which can cause a range of health problems, including developmental delays, learning disabilities, and cardiovascular disease.