Two Technicians Are Describing High- and Low-Pressure Exhaust Gas Recirculation

question 34

Multiple Choice

Two technicians are describing high- and low-pressure exhaust gas recirculation systems. Technician A says that non-cooled, high-pressure EGR flow dominates at low speed, low load conditions and transitions to more flow from the cooled, low-pressure EGR circuit. Technician B says that with an air intake throttle located downstream or after the EGR valve, the throttle plate can open and close to change the pressure differential. Who is right?

• A)A only"
• B)B only"
• C)Both A and B
• D)Neither A nor B"

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Definitions:

Peak-to-peak

A measure of the voltage range in an alternating current (AC) signal, from the highest to the lowest point within one cycle.

Effective

Producing a desired effect, outcome, or ability to successfully bring about a result, particularly in terms of efficiency or potency.

Average

A statistical measure representing the central or typical value in a set of data, calculated typically as the sum of the values divided by the number of values.

Volt-amperes

A unit of electrical power in an AC circuit equivalent to one volt multiplied by one ampere, used to measure apparent power.