Exam 4: Common Operating Principles for Computerized Engine Control Systems

The emission control system that is designed to recirculate blow by gasses from the crankcase to the intake manifold is known as:

In a GDI system the fuel injectors spray fuel directly into the combustion chamber and require higher fuel pressures under heavy load, typically as high as:

The emission system that is designed to route ambient air into the exhaust manifold during cold engine warm up only is known as:

What level of tach reference information is required in order for the PCM to properly control a distributor ignition system?

In an electronic return-less SMPI system, the PCM controls all of the following EXCEPT:

All of the following are used to combat the potential for vapor lock to occur EXCEPT :

With modern terminology, the acronym "DI" refers to which type of ignition system?

In order to ease cold weather starting, gasoline refiners produce gasoline in the winter months that has a:

What is the primary purpose for replacing 14-volt systems with 42-volt systems?

When battery voltage drops below a specified value, the PCM:

A homogeneous charge compression ignition (HCCI) engine:

Technician A says one advantage of a variable valve timing system is that it allows a higher-compression engine to burn a lower octane fuel while still being able to control the potential for detonation. Technician B says that most VVT systems use engine oil pressure to control them hydraulically. Who is correct?

Technician A says that on fuel injection systems, the fuel pump relay carries the high amperage current for the fuel pump. Technician B says that on fuel injection systems with a return line, the fuel pressure regulator is located after the fuel pump and before the fuel injectors. Who is correct?

Technician A says that if a fuel supply line ruptures during an accident resulting in fuel pressure loss and engine stall, the PCM will shut down the fuel pump. Technician B says that the fuel pump is controlled by the ignition switch only and should always run whenever the ignition switch is in the "run" position. Who is correct?

Reid Vapor Pressure (RVP) is a unit of measurement used to measure a fuel's:

What level of tach reference information is required in order for the PCM to properly control an SFI fuel management system?

During closed-loop operation of a fuel injection system, the PCM is programmed to perform all of the following functions EXCEPT :

What level of tach reference information is required in order for the PCM to properly control a "Waste Spark" ignition system?

What level of tach reference information is required for the PCM to properly control a COP ignition system?

With the engine running, how is the PCM programmed to pulse the fuel injectors in a sequential fuel injection (SFI/SMPI) system?