Fuel and Combustion Quiz: Arjay A. Arpia, MSc

A material that can react with other substances to release energy as heat or for work.

Gasoline and diesel fuel.

Natural gas and propane/butane (LPG).

<p>Approximately 86% carbon and 14% hydrogen.</p> Signup and view all the answers

<p>Regular, Premium, Unleaded, Super-unleaded.</p> Signup and view all the answers

<p>Methyl tertiary butyl ether.</p> Signup and view all the answers

<p>a) Grade 1D - high-speed engines with frequent load and speed variations, and low fuel temperatures. b) Grade 2D - high-speed engines with high loads and uniform speeds, or engines not requiring high volatility fuels. c) Grade 4D - low- and medium-speed engines with sustained loads at constant speed.</p> Signup and view all the answers

<p>Biodiesel is a clean burning renewable fuel derived from natural vegetable oils and fats. It is made through a chemical process converting oils and fats into fatty acid methyl esters (FAME).</p> Signup and view all the answers

<p>The two most common alcohols used as fuel for spark-ignition engines are ethanol and methanol. Ethanol can be produced from grain crops, sugar crops, starches, or crop residuals. Methanol can be produced from coal, natural gas, petroleum, or wood.</p> Signup and view all the answers

<p>a) It has only about 67.5% of the heating value of gasoline; b) It does not vaporize as readily as gasoline; c) The cost of manufacture and production is relatively high.</p> Signup and view all the answers

<p>Gasohol is a blend of 90% unleaded gasoline and 10% alcohol used as fuel for spark-ignition tractors and automobile engines. The advantages of adding alcohol to gasoline include raising the octane rating, not producing soot or carbon, burning without smoke or odor, producing exhaust free of nitrogen oxides, reducing the possibility of burning valves, and enabling a higher compression ratio for increased engine efficiency.</p> Signup and view all the answers

<p>Methanol alcohol can be produced from coal, natural gas, petroleum, or wood.</p> Signup and view all the answers

<p>The primary sources for producing ethanol are grain crops, sugar crops, starches, and crop residuals.</p> Signup and view all the answers

<p>Grade 4D diesel fuel oil is applicable for use in low- and medium-speed engines employed in services involving sustained loads at substantially constant speed.</p> Signup and view all the answers

<p>Grade 1D diesel fuel oil is applicable for use in high-speed engines in services involving frequent and relatively wide variations in loads and speeds, and in cases where abnormally low fuel temperatures are encountered.</p> Signup and view all the answers

<p>Grade 2D diesel fuel oil is applicable for use in high-speed engines in services involving relatively high loads and uniform speeds, or in engines not requiring fuels having higher volatility.</p> Signup and view all the answers

<p>Methyl tertiary butyl ether</p> Signup and view all the answers

<p>Regular contains tetraethyl lead, while Premium does not.</p> Signup and view all the answers

<p>Carbon and hydrogen</p> Signup and view all the answers

<p>Premium</p> Signup and view all the answers

<p>Propane and butane</p> Signup and view all the answers

<p>Methanol and ethanol</p> Signup and view all the answers

<p>Grade 4D</p> Signup and view all the answers

<p>Coal</p> Signup and view all the answers

<p>It has only about 67.5% of the heating value of gasoline</p> Signup and view all the answers

<p>Gasohol</p> Signup and view all the answers

<p>Ethanol - from coal</p> Signup and view all the answers

<p>High-speed engines with frequent load variations</p> Signup and view all the answers

<p>Grain crops, sugar crops, starches, crop residuals</p> Signup and view all the answers

<p>$FAME$</p> Signup and view all the answers

<p>$\text{Raises the octane rating of the fuel}$</p> Signup and view all the answers

<p>30</p> Signup and view all the answers