Automotive Technology: A Systems Approach (MindTap Course List)
6th Edition
ISBN: 9781133612315
Author: Jack Erjavec, Rob Thompson
Publisher: Cengage Learning
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Textbook Question
Chapter 29, Problem 15RQ
True or False? On today’s vehicles, an electric fuel pump runs only when the engine is running.
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Which of the following statements about fuel cells is NOT true?a. A single fuel cell produces very low voltage, normally less than one volt.b. A fuel cell produces electricity through an electro-chemical reaction that combines hydrogen and oxygen to form water.c. A fuel cell is composed of two electrodes coated with a catalyst and separated from each other by an electrolyte and from the case by separators.d. In a fuel cell, catalysts are used to ignite the hydrogen; this causes a release of electrons or electrical energy.
The octane number of a fuel is the percentage of octane in that fuel.
True
False
Octane number is the measure of a fuel's ability to resist knocking. The higher the
octane number, the more compression the fuel can withstand before detonating.
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Chapter 29 Solutions
Automotive Technology: A Systems Approach (MindTap Course List)
Ch. 29 - Fuel pump is a statement of the volume of the fuel...Ch. 29 - Explain the purpose of the relief valve and...Ch. 29 - Most fuel tank filler caps contain a pressure...Ch. 29 - What type of fire extinguisher should you have...Ch. 29 - What is the first thing that should be...Ch. 29 - Why is a plastic or metal restrictor placed in...Ch. 29 - Low fuel pump pressure causes a mixture and...Ch. 29 - True or False? Fuel pressure typically is at its...Ch. 29 - If fuel pump pressure or volume is less than...Ch. 29 - Which of the following statements about a fuel...
Ch. 29 - Low fuel pressure can be caused by all of the...Ch. 29 - If a fuel system loses pressure immediately after...Ch. 29 - List at least five safety precautions that should...Ch. 29 - Describe the operation of the evaporative system...Ch. 29 - True or False? On todays vehicles, an electric...Ch. 29 - Technician A says that excessively high pressure...Ch. 29 - Technician A replaces a damaged steel fuel line...Ch. 29 - While discussing electric fuel pumps: Technician A...Ch. 29 - To relieve fuel pressure on an EFI car: Technician...Ch. 29 - While discussing quick-disconnect fuel line...Ch. 29 - While discussing fuel filters: Technician A says...Ch. 29 - While discussing the various fuel filters used in...Ch. 29 - While discussing fuel tank filler pipes and caps:...Ch. 29 - While discussing electric fuel pumps: Technician A...Ch. 29 - While discussing electric fuel pumps: Technician A...
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- The most common fuel oil used for residential and light commercial is A.Number 1. B. Number 2. C. Number 3. D. Number 4.arrow_forwardAs an engines compression ratio increases, what should happen to the octane rating of the gasoline?arrow_forwardDescribe how a fuel-cell-powered vehicle works.arrow_forward
- . Explain the purpose of the relief valve and one-way check valve in an electric fuel pump. What type of fire extinguisher should you have close by when you are working on fuel system components?arrow_forwardWhich one of the following statements is correct? Bioenergy cannot be used as feedstock and product. Bioenergy is feedstock and biomass is its product Biomass is feedstock and bioenergy is its product Biomass cannot be used as feedstock and productarrow_forwardWhich of the following statements about carbondioxide is not true?a. CO2 levels are highest when the air-fuel ratiois slightly leaner than stoichiometric.b. The production of CO2 is directly related tothe amount of fuel consumed; therefore,more fuel-efficient engines produce less CO2c. To reduce CO2 levels in the exhaust, engineers are working hard to decrease fuel consumption to keep CO2low.d. The concern for CO2 emissions is one of theprimary reasons for the delayed use of alternative fuels for automobiles.arrow_forward
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