AUTOMOTIVE TECHNOLOGY (W/MINDTAP)
7th Edition
ISBN: 9780357096772
Author: ERJAVEC
Publisher: CENGAGE L
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Chapter 31, Problem 2MC
The PCM checks for a closed throttle plate each time the engine starts. This becomes the base for all throttle settings and can be viewed by looking at the PID with the throttle closed. Which of the following would not cause an abnormal reading and a higher-than-normal idle speed?
a. A bad TP sensor
b. A bad IAC valve
c. Loose or worn throttle plates
d. Excessive noise in the TP or related circuits
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Assume a Space Launch System (Figure 1(a)) that is approximated as a cantilever undamped single degree of freedom (SDOF) system with a mass at its free end (Figure 1(b)). The cantilever is assumed to be massless. Assume a wind load that is approximated with a concentrated harmonic forcing function p(t) = posin(ωt) acting on the mass. The known properties of the SDOF and the applied forcing function are given below. • Mass of SDOF: m =120 kip/g • Acceleration of gravity: g = 386 in/sec2 • Bending sectional stiffness of SDOF: EI = 1015 lbf×in2 • Height of SDOF: h = 2000 inches • Amplitude of forcing function: po = 6 kip • Forcing frequency: f = 8 H
Chapter 31 Solutions
AUTOMOTIVE TECHNOLOGY (W/MINDTAP)
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