Question

13 multiple choice 1 point where is the fuel injected in a port injected gasoline engine? in front of the throttle valve into the intake manifold directly into the cylinders into a preignition injection chamber 14 multiple choice 1 point all of the following are advantages to gdi (gasoline direct injection) except reduced emissions allowing higher boost or compression without using higher octane fuel better fuel economy reduced carbon deposits.

Explanation:

• Question 13: In a port - injected gasoline engine, the fuel is injected into the intake manifold. This is a fundamental characteristic of port - injection systems.
• Question 14: GDI (Gasoline Direct Injection) has several advantages such as reduced emissions (due to better combustion control), allowing higher boost or compression without using higher octane fuel (because of direct injection cooling the intake charge), and better fuel economy (more precise fuel delivery). However, GDI engines are known to have issues with increased carbon deposits on intake valves as the fuel does not clean the valves like in port - injection systems.

Answer:

1. Into the intake manifold
2. reduced carbon deposits