The rod’s big end has a removable section called an end cap or cap that allows it to be attached to the crank. Automobile Engineering MCQ Practice Test - Set 01, Retain The students need to have minimum eligibility of passing their 10+2 board or any equivalent exams from a … For now, we just need to know that the cylinder head, or head for short, just sits on top of the block and covers each of the cylinders that have pistons in them. Other manufacturers cast lightweight aluminum blocks for weight reduction. The crank is actually clamped to the block, not attached, with more sleeve bearings (called main bearings) to help lubricate the crank’s journals. When the head is torqued down to the block, it creates an area atop each cylinder where combustion energy is released and focused on the piston. Practice Test: Question Set - 16 1. This is what makes your car go forward. We will cover these in greater detail in the ENGINE 101 PART 2 section. Fundamentals of Automotive Technology provides all of the critical knowledge … Some of these are used to channel cooling fluid called “coolant” around the cylinders to maintain engine temperatures and to prevent overheating. The block is the main part of the engine that contains the reciprocating components that harness the energy in the gasoline. Enter your mobile number or email address below and we'll send you a link to download the free Kindle App. (10) Answer: Option A These parts work together in an exacting manner to harness the chemical energy in gasoline, converting many small and rapid combustion events into a turning motion that eventually spins your wheels and propels your car. (8) Answer: Option A DO YOU FIND THAT YOU’RE ADDICTED to the thrill and speed of driving fast, but don’t know the first thing about what’s actually going on under the hood? Practice Test: Question Set - 02 1. These are thin, circular, springy metal pieces that fit in grooves around the ring land areas at the tops of the pistons. Jones & Bartlett Learning; Illustrated edition (January 24, 2013), Reviewed in the United States on January 29, 2020. Providing the link between the piston and the crank, it is understandable how connecting rods earned their name. Kirk. Valve springs are literally springs attached to the valves that help keep them closed when they’re supposed to be closed. (1) Answer: Option D Same title, 2nd Edition. Practice Test: Question Set - 10 1. That power produced in one cylinder is multiplied because the combustion events are repeated in each of the cylinders. cleaner intake manifold carburettor (or throttle body) intake ports cylinders, Air In order to navigate out of this carousel please use your heading shortcut key to navigate to the next or previous heading. The big end of the rod spins smoothly on the journal of the crank on a pressurized oil film that coats a soft metal sleeve bearing. Most cars as we know them are powered by what is called a 4-stroke engine. We’ll tell you all about the noisy chunk of metal connected to your wheels and a little bit about the things that make it go forward. The crank in an engine is very similar to a bicycle crank. It also analyzes reviews to verify trustworthiness. This is the basic premise on how an engine works. vertical external forces are supported by the suspension arms, The If you’re looking under the hood, it’s the big piece of metal that’s found in the center of the engine bay that seems to have a whole bunch of other metal, wires and tubes attached to it. Pistons move up and down in the cylinders of the block because a mixture of fuel and air is ignited within the cylinder. You're listening to a sample of the Audible audio edition. It is in this combustion chamber that the spark plug creates an electrical arc which ignites the air/fuel mixture. Practice Test: Question Set - 01 1. Some camshaft lobes push directly on the valves to open them, but most street-driven car engines work indirectly through a rocker arm. Then you can start reading Kindle books on your smartphone, tablet, or computer - no Kindle device required. automotive repair as a hobby or tinkering in the garage are gone. 1. (2) Answer: Option C (3) Answer: Option B The main journals also have holes in them that allow pressurized oil from the engine oil system to lubricate the journal and bearings. (14) Answer: Option D There's a problem loading this menu right now. This shopping feature will continue to load items when the Enter key is pressed. On most engines the small end of the rod has a bronze bushing for the wrist pin that is fed by splash lubrication. Prime members enjoy FREE Delivery and exclusive access to music, movies, TV shows, original audio series, and Kindle books. Usually constructed from aluminum, the head also contains the spark plugs, valves and the rest of the valvetrain (valve springs, retainers, camshafts). AUTOMOTIVE ELECTRICAL CIRCUITS AND WIRING 3/ 101 AUTOMOTIVE ELECTRICAL CIRCUITS AND WIRING INTRODUCTION Learning Objective:Identify charging, st arting, ignition, and accessory-circuit components, their functions, and maintenance procedures. There was a problem loading your book clubs. The connecting rod is coupled to the piston by a tube called a wrist pin. Practice Test: Question Set - 01 1. This is a great textbook that matches the curriculum that has been used at the school I attend. The advantage of having separate camshafts is that each cam can be placed very close to the valve, allowing the cam’s lobes to either work directly on the valves or through a very small rocker arm. Certifying organizations As stated on their Web site, the National Institute for Automotive … In fact, it is still very solid theory wise. I am a mechanic by trade. It’s rare, but there are some instances where the wrist pin is fed pressurized oil from the rod bearing from a hole drilled through the length of the rod from the rod’s big end. As a result, there are two heads that cover the areas on the block that have exposed pistons. But if you are interested in automotive theory, you should check out the 2nd edition of this title that was published in 2017.
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