Enginerring - Powertrain Flashcards

1
Q

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.

A

The Feature:

Honda uses aluminum-alloy castings for major components such as the cylinder block, cylinder head and transmission cases.

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2
Q

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.

A

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.

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3
Q

ECO Assist (All)

What’s the Benefit?

This system is designed to help drivers maximize fuel efficiency for their specific driving conditions.

A

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
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