Enginerring - Powertrain Flashcards
Aluminum-Alloy Engines (Accord, Civic, CR-V, Fit, HR-V, Odyssey, Pilot and Ridgeline)
What’s the Benefit? Aluminum alloy is much lighter than cast iron, helping improve performance and fuel efficiency36 while offering superior heat-transfer characteristics for better heat management.
The Feature:
Honda uses aluminum-alloy castings for major components such as the cylinder block, cylinder head and transmission cases.
Continuously Variable Transmission (CVT) (Accord, Civic, CR-V, Fit and HR-V)
What’s the Benefit?
The CVT provides better fuel efficiency36 as well as improved acceleration, when compared to a conventional automatic transmission.
The Feature:
Honda engineers decided that a continuously variable transmission (CVT) would be the ideal automatic transmission to offer for greater efficiency.
The CVT’s unique, stepless shifting system operates more smoothly than a conventional automatic.
The range of drive ratios available is infinite, allowing optimal engine tuning for efficiency.
A metal drive belt runs between a pair of variable-width pulleys.
When a gear-ratio change is needed, one set of pulley faces is pushed together, and the other is drawn apart.
A special computer-controlled, hydraulically actuated system changes the CVT’s ratios during driving.
ECO Assist (All)
What’s the Benefit?
This system is designed to help drivers maximize fuel efficiency for their specific driving conditions.
The Feature:
Eco Assist™ consists of two independent parts: the Driver Feedback System and ECON mode.
- The Driver Feedback System has an ambient meter in the instrument panel that changes color as an indicator of driving efficiency. Depending on the model, a blue or white color indicates less-efficient driving. As the driving technique becomes more efficient, the color shifts to green.
- ECON mode reduces the 2 most energy-consuming systems output by 25%; the ac compressor and RPM, improving fuel efficiency sometimes by 2-3 miles mpg
