Automotive Technology (Custom)
6th Edition
ISBN: 9781337495356
Author: ERJAVEC
Publisher: Cengage
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Chapter 13, Problem 8RQ
Which of the following statements about the purpose of a cylinder head gasket is not true?
- It seals intake stroke vacuum, combustion pressure, and the heat of combustion.
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Generalized Machine Theory
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Q1. (a) Explain and illustrate the object of the performance analysis of any type of
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Chapter 13 Solutions
Automotive Technology (Custom)
Ch. 13 - True or False? Make sure you locate and adhere to...Ch. 13 - How does a torque-to-yield bolt differ from...Ch. 13 - How do seals differ from gaskets?Ch. 13 - Where are thread sealers most often used?Ch. 13 - What are the major differences between aerobic and...Ch. 13 - Which of the following statements is incorrect?...Ch. 13 - True or False? Valve lash is adjusted in many...Ch. 13 - Which of the following statements about the...Ch. 13 - True or False? The computer in most late-model...Ch. 13 - Graphite is. an anaerobic substance an RTV an...
Ch. 13 - Which of the following are considered soft, cut...Ch. 13 - What material is typically not used to form a rear...Ch. 13 - Which of the following statements about preparing...Ch. 13 - On hybrid vehicles, how can you identify the high...Ch. 13 - True or False? Some crankshaft and camshaft timing...Ch. 13 - Prob. 1ASRQCh. 13 - Technician A uses adhesives to hold gaskets in...Ch. 13 - Technician A uses soft gaskets on valve covers....Ch. 13 - Technician A inspects all sealing surfaces for...Ch. 13 - Technician A says that oil pan gaskets are often...Ch. 13 - Prob. 6ASRQCh. 13 - While discussing proper engine break-in:...Ch. 13 - Prob. 8ASRQCh. 13 - Prob. 9ASRQCh. 13 - While selecting the proper RTV for a particular...
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- P10-21 When the impurity cumene hydroperoxide is present in trace amounts in a cumene feed stream, it can deactivate the silica-alumina catalyst over which cumene is being cracked to form benzene and propy- lene. The following data were taken at 1 atm and 420°C in a differential reactor. The feed consists of cumene and a trace (0.08 mol %) of cumene hydroperoxide (CHP). Benzene in Exit Stream (mol %) 1 (8) 2 1.62 1.31 1.06 0.85 0.56 0.37 0.24 0 50 100 150 200 300 400 500 == (a) Determine the order of decay and the decay constant. (Ans.: kg 4,27 x 10-3 s) (b) As a first approximation (actually a rather good one), we shall neglect the denominator of the cat- alytic rate law and consider the reaction to be first order in cumene. Given that the specific reac- tion rate with respect to cumene is k = 3.8 X 103 mol/kg fresh cat s atm, the molar flow rate of cumene (99.92% cumene, 0.08% CHP) is 200 mol/min, the entering concentration is 0.06 kmol/m³, the catalyst weight is 100 kg, and the…arrow_forwardICG Heterogeneous Catalysis Performance P10-3 t-Butyl alcohol (TBA) is an important octane enhancer that is used to replace lead additives in gasoline [Ind. Eng. Chem. Res., 27, 2224 (1988)]. TBA was produced by the liquid-phase hydration (W) of isobutene (I) over an Amberlyst-15 catalyst. The system is normally a multiphase mixture of hydrocar- bon, water, and solid catalysts. However, the use of cosolvents or excess TBA can achieve reasonable miscibility. The reaction mechanism is believed to be Derive a rate law assuming: I S (P10-3.1) I+S W.S (P10-3.2) WSZ W S+I SE TBA S+S (P10-3.3) TBA SZ TBA + S (P10-3.4) (a) The surface reaction is rate-limiting. (b) The adsorption of isobutene is limiting. (c) The reaction follows Eley-Rideal kinetics I SW TBA S (P10-3.5) and the surface reaction is limiting. (d) Isobutene (1) and water (W) are adsorbed on different sites. T + S₁ W + S₂ W. S₂ TBA is not on the surface, and the surface reaction is rate-limiting. Ans.: TBA=-= [CCW-CTBA/K]…arrow_forwardof cat- The cat- metric ength wate)? of the nds? the rate law is h. Redo parts (b) and (c) for these conditions. P10-20, The vapor-phase cracking of gas-oil in Example 10-6 is carried out over a different catalyst, for which would you recommend? with '=5x10-5 kmol kg-cat-s-atm (a) Assuming that you can vary the entering pressure and gas velocity, what operating conditions (b) What could go wrong with the conditions you chose? Now assume the decay law is da dt = kpacite with kp=100 dm³ at 400°C mol-s where the concentration, Cenke, in mol/dm³, can be determined from a stoichiometric table. (c) For a temperature of 400°C and a reactor height of 15 m, what gas velocity do you recommend? (d) The reaction is now to be carried in an STTR 15 m high and 1.5 m in diameter. The gas velocity is 2.5 m/s. You can operate in the temperature range between 100 and 500°C. What temperature do you choose, and what is the corresponding conversion? (e) What would the temperature-time trajectory look like…arrow_forward
- Q2/ Power-law film flow. Consider the film flow of a power-law fluid with parameters к and n and density p down a plate inclined at angle with respect to the horizontal. If the film thickness is H: a. Derive an expression for the resulting velocity profile v as a function of y (distance from the plate), H, K, n, g, p, and b. Sketch three representative velocity profiles (each having, for simplicity, the same maximum velocity, which in practice would mean different values of к), for n 1, and comment briefly on the important features. C. Derive an expression for the volumetric flow rate of the liquid per unit width of the plate. Check your answer against the known expression for a Newtonian fluid: Q= H3pg sin 37arrow_forwardQ8/ Non-Newtonian fluid characterization. A non-Newtonian liquid is tested by placing it between the two concentric cylinders of a viscometer. Since the gap h between the two surfaces is very small, they may be approximated by two planes as shown in Fig.3, one surface being stationary and the other moving. The instrument essentially measures the shear stresses t (Tx)y-h needed to move the upper plate at a variety of steady velocities V. Fig.3 Opposed surfaces of a viscometer. Explain in detail how you would discover the model to which the liquid conforms-it may be either a power-law fluid or a Bingham plastic and how you could determine from the data the two parameters (such as к and n, or to and n) for either model. Use the symbols for the rate of strain dvx/dy.arrow_forwardQ2/ Derive Von-Karman Eqn which is given in lecture and derive velocity profile for T-flow through the pipe as: Where a radius and r is the distance from 1 V₁ = (V₂)=0+ Tw + In - a the center.arrow_forward
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