While having a discussion, Technician A says that a normally aspirated engine will lose 3% of its horsepower with every 1,000-foot increase in altitude. Technician B says that a turbocharged vehicle will not lose power when driven from low to higher altitude. Who is correct?

Question

Quizplus · Accepted Answer

Technician A is correct because normally aspirated engines do indeed lose power with an increase in altitude due to the decrease in air density, which reduces the amount of oxygen available for combustion. The rule of thumb is a loss of about 3% per 1,000 feet. Technician B is also correct because turbocharged engines compensate for the lower air density by forcing more air into the combustion chamber, thus maintaining their power output even at higher altitudes.

While Having a Discussion, Technician a Says That a Normally