Automotive Technology
7th Edition
ISBN: 9781337794213
Author: ERJAVEC, Jack.
Publisher: Cengage,
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
thumb_up100%
Chapter 34, Problem 1SA
A rich air-fuel ratio causes HC emissions to ________.
Expert Solution & Answer
To determine
The appropriate word to fill in the blank in the statement “ A rich air-fuel causes HC emissions to _______”.
Answer to Problem 1SA
A rich air-fuel ratio causes higher HC emissions.
Explanation of Solution
Unburned hydrocarbons are usually, vapors of gasoline that have not been burned during combustion. HC emissions illustrate that the combustion of fuel is not completed in the engine cylinder. The amount of HC depends on certain engine conditions, one of which is a rich air-fuel ratio. Whenever the mixture of air-fuel is extremely rich it causes higher HC and CO emissions.
Want to see more full solutions like this?
Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
Homework#7
Computing Angles of Rotation and Angles of Tilt
In each of the following problems, the axis of a hole is shown in a rectangular solid. In
order to position the hole axis for drilling, the angle of rotation and the angle of tilt must be
determined. Compute angles to the nearer minute in triangles with customary unit sides.
Compute angles to the nearer hundredth degree in triangles with metric unit sides.
a. Compute the angle of rotation, R.
b. Compute the angle of tilt,
T.
7. Given: H= 2.600 in.
L = 2.400 in.
a.
W= 1.900 in.
8. Given: H= 55.00 mm
b.
Use this figure for #7 and #8.
AXIS OF HOLE
L 48.00 mm
W= 30.00 mm
H
a.
b.
9. Given: H = 4.750 in.
L = 4.000 in.
W= 3.750 in.
a.
10. Given: H=42.00 mm
b.
L37.00 mm
W = 32.00 mm
a.
b.
11. Given: H = 0.970 in.
L = 0.860 in.
W= 0.750 in.
a.
12. Given: H= 22.00 mm
L 18.00 mm
=
W = 15.00 mm
a.
b.
Use this figure for #9 and #10.
ZR
AXIS OF HOLE
Use this figure for #11 and #12.
H
b.
L
AXIS OF HOLE
T
This is a tilt and rotation question. Here are notes attached for reference. I prefer handwritten solutions. ONLY UPLOAD A SOLUTION IF YOU ARE SURE ABOUT THE ANSWER PLEASE. I prefer handwritten solutions.
Chapter 34 Solutions
Automotive Technology
Ch. 34 - A rich air-fuel ratio causes HC emissions to...Ch. 34 - What will result from too little EGR flow? And...Ch. 34 - What can result from a charcoal canister that is...Ch. 34 - What happens if a PCV valve is stuck in the open...Ch. 34 - Explain why the I/M 240 and similar tests are...Ch. 34 - How do you test the efficiency of a secondary AIR...Ch. 34 - List five common causes for high HC emissions.Ch. 34 - Describe carbon monoxide (CO) emissions in...Ch. 34 - An EGR valve that does not fully close can cause...Ch. 34 - A restricted catalytic converter can cause all of...
Ch. 34 - Which of the following statements about EVAP...Ch. 34 - As a catalytic converter begins to deteriorate,...Ch. 34 - How much pressure does a typical EVAP pressure...Ch. 34 - Which of the following exhaust gases is typically...Ch. 34 - Prob. 7MCCh. 34 - While discussing the proper way to test a...Ch. 34 - Prob. 2ASRQCh. 34 - While discussing catalytic converter diagnosis:...Ch. 34 - While discussing EGR valve diagnosis: Technician A...Ch. 34 - While discussing EGR valve diagnosis: Technician A...Ch. 34 - When discussing the diagnosis of a positive back...Ch. 34 - While diagnosing a PCV problem: Technician A says...Ch. 34 - Technician A says that the AIR system should pump...Ch. 34 - While discussing PCV system diagnosis: Technician...Ch. 34 - While discussing EVAP testing: Technician A says...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- Consider a constant area semi-infinite fin of a circular cross section of radius r. and thermal conductivity k. The base is maintained at T. and the surface of the fin exchanges heat by convection to an ambient fluid at T with a heat transfer coefficient h. It is desired to increase the heat transfer from the fin. The following suggestions are made: (i) doubling k, (ii) doubling ro, (iii) doubling h. Which suggestion will bring about the largest increase in heat transfer? To x h, T C A h, Tarrow_forwardA 20 cm long 304 stainless steel bar is initially at 18°C. One end of the bar is suddenly maintained at 100°C. Assuming that your finger can tolerate a 60°C temperature, what is the longest time you are willing to wait before you touch the other end? Be on the safe side and select a conservative model. h,T oil bath glass ballarrow_forwardSmall glass balls of radius 1.1 mm are cooled in an oil bath at 22°C. The balls enter the bath at 180°C and are moved through on a conveyor belt. The estimated heat transfer coefficient is 75 W/m²-ºC. What should the conveyor speed be so that the balls leave at 40°C? The length of bath is 2.5 m.arrow_forward
- Just do Questions 7, 9, 11. Here are notes attached for reference. I prefer handwritten solutions. ONLY UPLOAD A SOLUTION IF YOU ARE SURE ABOUT THE ANSWER PLEASE.arrow_forwardThis is a tilt and rotation question. Here are notes attached for reference. I prefer handwritten solutions. ONLY UPLOAD A SOLUTION IF YOU ARE SURE ABOUT THE ANSWER PLEASE. I prefer handwritten solutions.arrow_forwardA turbine blade made of a metal alloy (k = 17 W/m-K) has a length of 5.3 cm, a perimeter of 11 cm, and a cross-sectional area of 5.13 cm². The turbine blade is exposed to hot gas from the combustion chamber at 1133°C with a convection heat transfer coefficient of 538 W/m²K. The base of the turbine blade maintains a constant temperature of 450°C and the tip is adiabatic. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Hot gas h=538 W/m²K TL E= Turbine blade k = 17 W/m-K p=11 cm, L=5.3 cm A = 5.13cm² T=450°C Determine the temperature at the tip of the turbine blade. The temperature at the tip of the turbine blade is °C.arrow_forward
- ۲/۱ : +0 تا العنوان Ч Example 5.5 The turbine rotor of a ship has a mass of 30 tons, a radius of gyration of 600 mm and rotates at 2400 rpm in a clockwise direction when viewed from aft. The ship pitches through a total angle of 15, 7.5" above and 7.5° below the horizontal, the motion being simple harmonic and having a period of 12 sec. Determine the maximum gyroscopic couple on the holding down bolts of the turbine and the direction of yaw as the Dow rises. h2023-43-115-154 Vees 2V & Pond35. sketch the diagram for them. 147% 3-inpuls RTL-NAND having Re14502 BRO Sel: VIL VBEON 0.65V VIHAVING + 1.34V VHB VIHC Vesss: 1.142V Vine: IB RO+VBES+ 640 Vec Ret 709420 IB₁ 10.3mA Ic: Vec-VCE 5-0-2 Re 45 · 10.67-A ICCE: When A&B &C. "1" Vol No 30206 When A&B &c, "o" Uok Vec5v L.S. 5.06 4.4v VIT 94+114+1.34 -3.42 V N.ML5 V N.Mu-16u T.W= 2.75 169 N.Mu VEM VL N.ML Lex-V Re 16.41A Re ± 10.6mA Pony =69mw 37 L.S >arrow_forwardI don't know how to answer this questionarrow_forwardRequired information Consider a very long, slender rod. One end of the rod is attached to a base surface maintained at Tb, while the surface of the rod is exposed to an air temperature of 400°C. Thermocouples imbedded in the rod at locations 25 mm and 120 mm from the base surface register temperatures of 325°C and 375°C, respectively. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. T₁ Ть T₂ x2 Air Determine the rod length (mm) for the case where the ratio of the heat transfer from a finite length fin to the heat transfer from a very long fin under the same conditions is 99 percent. The length of the rod is mm.arrow_forward
- please find Ix in mm4arrow_forward۲/۱ ∞ + : 5V ON Date AND Loaded with an oR P 5- A R Vect bov V(22)= IR, Vcc-vd 2R V(21) V(22) + Vd=" or V(z) HomeWo Vec-T 022 51-2 العنوان Example 5.5: The turbine rotor of a ship has a mass of 30 tons, a radius of gyration of 600 mm and rotates at 2400 rpm in a clockwise direction when viewed from aft. The ship pitches through a total angle of 15%, 7.5° above and 7.5° below the horizontal, the motion being simple harmonic and having a period of 12 sec. Determine the maximum gyroscopic couple on the holding down bolts of the turbine and the direction of yaw as the Dow rises. Vezi b) V225 V22 lo 21.5 2.15 U 5-0.7 K Loka (I= Vecond R 5:4.57 U 25-0-7 Tak R 5-0.7 5kr V2, Va-IR=5-2.15 -2-85 NEW G C 'WR к >arrow_forward: + ♡ +① العنوان I need a detailed drawing with explanation so A 4 ined sove in peaper 96252 Example 5.5 The turbine rotor of ship has a mass of 30 tons, a radius of gyration of 600 mm and rotates at 2400 rpm ia clockwise direction when viewed from aft. The ship pitches through a total angle of 7.5° above and 7.5° below the horizontal, the motion beingle harmonic and hav gyroscopic couple on the bow rises. ding down be a period of 12 sec. Determine the maximum of the turbine and the direction of yaw as bax r 2.01 ۳/۱arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Automotive Technology: A Systems Approach (MindTa...Mechanical EngineeringISBN:9781133612315Author:Jack Erjavec, Rob ThompsonPublisher:Cengage Learning
Refrigeration and Air Conditioning Technology (Mi...Mechanical EngineeringISBN:9781305578296Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill JohnsonPublisher:Cengage Learning
Automotive Technology: A Systems Approach (MindTa...
Mechanical Engineering
ISBN:9781133612315
Author:Jack Erjavec, Rob Thompson
Publisher:Cengage Learning
Refrigeration and Air Conditioning Technology (Mi...
Mechanical Engineering
ISBN:9781305578296
Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher:Cengage Learning
Extent of Reaction; Author: LearnChemE;https://www.youtube.com/watch?v=__stMf3OLP4;License: Standard Youtube License