diesel engine is suited for heavy vehicles .why
Answers
Answered by
0
i. Diesel, as a fuel, has slower combustion characteristics as compared to petrol. So, for a given power, they produce higher torque at low speeds, which is the primary requirement of a heavy engine.
ii. Diesel engines employ higher compression ratios; so the peak pressures and temperatures reached are higher as compared to petrol engines, which in turn requires the engines to be heavy and robust.
iii. Also, for the same maximum pressure and temperature, the efficiency of a theoretical Diesel cycle is higher as compared to the Otto cycle.
iv. If we try to use petrol in bigger-sized engines, it might lead to too much of knocking (because of their pre-ignition).
ii. Diesel engines employ higher compression ratios; so the peak pressures and temperatures reached are higher as compared to petrol engines, which in turn requires the engines to be heavy and robust.
iii. Also, for the same maximum pressure and temperature, the efficiency of a theoretical Diesel cycle is higher as compared to the Otto cycle.
iv. If we try to use petrol in bigger-sized engines, it might lead to too much of knocking (because of their pre-ignition).
Answered by
0
Diesel, as a fuel, has slower combustion characteristics as compared to petrol. So, for a given power, they produce higher torque at low speeds, which is the primary requirement of a heavy engine.
ii. Diesel engines employ higher compression ratios; so the peak pressures and temperatures reached are higher as compared to petrol engines, which in turn requires the engines to be heavy and robust.
iii. Also, for the same maximum pressure and temperature, the efficiency of a theoretical Diesel cycle is higher as compared to the Otto cycle.
iv. If we try to use petrol in bigger-sized engines, it might lead to too much of knocking (because of their pre-ignition).10.5k Views · View UpvotesRelated QuestionsMore Answers BelowWhy are petrol engines not used for a heavy vehicle?Why is a heavy flywheel used in a diesel engine?What is the best diesel engine ever made for heavy trucks?How can you tell if a car has a diesel or a petrol engine?Can I use an ELM327 in a diesel-engine car?Vivek Vetal, A Chemical Engineering studentWritten Jul 10, 20161. Diesel and petrol have almost same calorific value at room temperature. But the density of diesel is greater than petrol thus gives 15% more energy per unit volume on combustion.2. Diesel engines produce much more torque (you can say the pushing force) than petrol ones, which is more required for heavy vehicles.3. Diesel engines are more fuel efficient than petrol engines.4. Diesel is an oil where petrol is a spirit. Diesel is less volatile as well as less inflamable. Thus safer to carry in large quantity.
ii. Diesel engines employ higher compression ratios; so the peak pressures and temperatures reached are higher as compared to petrol engines, which in turn requires the engines to be heavy and robust.
iii. Also, for the same maximum pressure and temperature, the efficiency of a theoretical Diesel cycle is higher as compared to the Otto cycle.
iv. If we try to use petrol in bigger-sized engines, it might lead to too much of knocking (because of their pre-ignition).10.5k Views · View UpvotesRelated QuestionsMore Answers BelowWhy are petrol engines not used for a heavy vehicle?Why is a heavy flywheel used in a diesel engine?What is the best diesel engine ever made for heavy trucks?How can you tell if a car has a diesel or a petrol engine?Can I use an ELM327 in a diesel-engine car?Vivek Vetal, A Chemical Engineering studentWritten Jul 10, 20161. Diesel and petrol have almost same calorific value at room temperature. But the density of diesel is greater than petrol thus gives 15% more energy per unit volume on combustion.2. Diesel engines produce much more torque (you can say the pushing force) than petrol ones, which is more required for heavy vehicles.3. Diesel engines are more fuel efficient than petrol engines.4. Diesel is an oil where petrol is a spirit. Diesel is less volatile as well as less inflamable. Thus safer to carry in large quantity.
Similar questions