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The self-ignition temperature of diesel as compared to petrol

The self-ignition temperature of diesel as compared to petrol Correct Answer is lower

Self-ignition temperature is the temperature required for the fuel to automatically ignite without the help of external sources like spark plugs or igniter coils. This temperature is also known as kindling point. As petrol ignites with the help of spark plug and diesel by compression. So we don't require petrol to reach its self-ignition temperature at an early stage. On the other hand, we need the diesel to reach its self-ignition temperature at an early stage for the combustion purpose. Therefore, the self-ignition temperature of Petrol is kept higher than diesel

Other reasons for keeping the self-ignition temperature of the petrol high is to avoid detonation phenomenon. Detonation is a state where due to certain hot spots or high-temperature regions, the petrol ignites automatically before the actual power stroke. It harms the piston, cylinder and decreases your efficiency/mileage of the vehicle.

Related Questions

Two statements and a few problems are given. Which of the following problems can be solved through these statements? Statement I: A container contains 28L mixture of diesel and petrol. Statement II: The ratio of diesel to petrol is 3 : 1 and 28L of Petrol is added to the container. Problem 1: What is the quantity petrol in the container before petrol is added? Problem 2: What is the ratio of diesel to Petrol in the final mixture? Problem 3: What is the cost of Petrol in the mixture if total cost of mixture is Rs.1500?
Study the following table:   June 2007 December 2014 Price of petrol in Rs/litre 47.74 61.33 Price of diesel in Rs/litre 35.21 50.51   After studying the above table, Devmeet a class V student wrote the following in his notebook: A. Petrol is more expensive fuel than diesel. B. The percentage increase in the price of diesel is more than that of petrol. C. Diesel is cheaper and that is why public transport runs on it. D. Diesel is cheaper fuel than petrol. People should buy diesel vehicles. Which one of the following is correct?
Once a study was conducted about the impact of inflation on the prices of petrol and diesel. It has been observed during recent survey that the price of diesel increases by 40 paise every year. Apart from that it is been also observed that the price of petrol also increases by 15 paise every year. If in 2016, the price of petrol was Rs. 65.30 and that of diesel was Rs. 53.70, after how many years will diesel cost 40 paise more than the petrol?
Three statements are followed by four conclusions numbered I, II, III and IV. You have to consider these statements to be true, even if they seem at variance from commonly known facts. Decide which of the given conclusions logically(s) follow from the given statements. Statements: 1. All petrol are diesel. 2. No diesel is kerosene. 3. All fuels are kerosene. Conclusions: I. Some fuel are petrol. II. No kerosene is petrol. III. No petrol is fuel. IV. Some kerosene are petrol.
Two shopkeeper A and B sold petrol by making a mixture of 15L petrol, 2L Diesel and 3L kerosene and 25L petrol, 6L diesel and 9L kerosene respectively. What is the difference between per liter price of mixture for both shopkeepers, if both buy petrol, diesel, and kerosene on the same price 40, 30, and 20 Rs/L. and sold the same quantity on the same price.
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The ratio of the quantity of petrol in the drum to the diesel is 16 : 81, given after performed three times the act: 4 litres of petrol drawn from a drum full of petrol and is then filled with diesel. Then how much petrol did the drum hold originally?
An empty fuel tank of a car was filled with A type petrol. When the tank was half-empty, it was filled with B type petrol. Again when the tank was half-empty, it was filled with A type petrol. When the tank was half-empty again, it was filled with B type petrol. What is the percentage of A type petrol at present in the tank?
An empty fuel tank of a car was filled with A type petrol. When the tank was half-empty, it was filled with B type petrol. Again when the tank was half-empty, it was filled with A type petrol. When the tank was half-empty again, it was filled with B type petrol. What is the percentage of A type petrol at present in the tank ?