Concept explainers
The CAFÉ standards under which vehicles are tested.
Explanation of Solution
CAFÉ stands for Corporate Average Fuel Economy standards. These were established in 1975 to build more fuel-efficient vehicles to increase the overall fuel efficiency of the vehicles. Under the CAFÉ standards, different models from different manufacturers of vehicles are tested for the number of miles they can be driven on a gallon of gas. Then the fuel efficiencies of these vehicles are averaged together. If the average fuel economy of a manufacturer falls below the usual requirement, then the manufacturer has to cover CAFÉ credits or may have to pay a penalty. For this the car makers have replaced many parts of the engine with new technology and techniques to attain higher fuel efficiency in addition to get increased power output. They replaced many manually operated systems with automatic or electronic system to get more fuel efficient vehicles and also get less emission from burning of fuel.
According to estimation, due to CAFÉ standards, the fuel economy will increase nearly to 54.5 mpg between the years 2017 and 2025.
Want to see more full solutions like this?
Chapter 4 Solutions
Mindtap For Erjavec/thompson's Automotive Technology: A Systems Approach, 4 Terms Printed Access Card (mindtap Course List)
- How can ambient temperature and pressure affect vehicle emission rates?arrow_forwardWhat is the best way to check, diagnose a vehicle with an indication of the causes?arrow_forwardWhich of the following statements about vehicles that are subject to Diesel Opacity Emissions (Smoke Meter) Inspection is NOT true? Only diesel powered vehicles with a Gross Vehicle Weight Rating (GVWR) over 8,500 pounds, per New York State Department of Environmental Conservation (DEC) regulations. “DEMA” will appear on a vehicle's New York State registration to indicate that the vehicle is subject to an opacity smokemeter test (in addition to the safety inspection). The “DEMA” (Diesel Emissions Metropolitan Area) Counties include Suffolk, Nassau, Queens, Kings, Richmond, New York, Bronx, Westchester & Albany. Only diesel powerearrow_forward
- Technician A says that if the oil pressure shows low on the vehicle's gauge, engine oil pressure should be verified using a manual test gauge. Technician B says that if a vehicle's oil pressure gauge reads too high, engine oil pressure should be verified using a manual test gauge. Who is correct? Select one: a. Technician A b. Technician B c. Both A and B d. Neither A nor Barrow_forwardHow many standard ASE tests are offered for automotive repair?arrow_forwardBefore delivering the vehicle to the customer, it is important to check the vehicle for cleanliness. Technician A says that all the trash from the repair process needs to be removed. Technician B says that we must ensure that all the windows are clean and free of hand prints. Who is correct? Select one: a. Technician A b. Technician B 1x c. Both A and B d. Neither A nor Barrow_forward
- Technician A says that the PCM illuminates the mil if a defective causes emission levels to exceed 2.5 times the emission standards for that model year vehicle. Technician B says that if a misfire condition threatens engine or catalyst damage, the PCM flashes the mil. Who is correctarrow_forwardThe Diesel Emissions Opacity Inspection Procedure includes a visual check of the OEM (Original Equipment Manufacturer) emissions control devices for presence and connection. The Certified Inspector must reject the vehicle if any are missing, disconnected, or disabled (tampered). True or False?arrow_forwardTechnician A says vehicle inspection pits allow access to the vehicle's underside without using a hoist or jack. Technician B says that vehicle inspection pits only need to be covered when a vehicle is over the top of them. Who is correct? Select one: a. Technician A b. Technician B c. Both A and B d. Neither A nor B ge Next page quiz/attempt.pftp?attempt-4403533&cmid%-D3426318&page=9#arrow_forward
- Explain how each of the following testing methods are carried out and what outcomes can be identified from the test results. (80 - Words) a. Compression test b. Cylinder leak-down test c. Oil pressure test d. Vacuum testarrow_forwardHow does regular maintenance contribute to the overall lifespan of a vehicle's engine?arrow_forwardwhat are plug gauges ? how to use them to judge a qualified part?arrow_forward
- Automotive Technology: A Systems Approach (MindTa...Mechanical EngineeringISBN:9781133612315Author:Jack Erjavec, Rob ThompsonPublisher:Cengage LearningElectrical Transformers and Rotating MachinesMechanical EngineeringISBN:9781305494817Author:Stephen L. HermanPublisher:Cengage Learning