Honda Fuel Efficiency Technology
 

Here are some modern techniques Honda is using for fuel efficiency. Hopefully most of you haven't heard of them.

Honda has long been a FE pioneer, ever since they promoted 4 stroke motorcycles over 2 strokes. Some of their old technology that you all might be familiar with:

• CVCC
• Lean Burn
• IMA (Integrated Motor Assist)

Here is some of their newer technology, found via Temple of VTEC:

1.3l i-DSI (88hp)

http://asia.vtec.net/Series/FitJazz/lseries/cutaway.jpg

• Smaller than D-Series (4.5" thinner, 2.7" shorter)
• Roller Bearing Rocker Arms (might be old VTEC-E technology?)
• Pulverized Molybdenum Piston skirts (reduced sliding friction)
• Offset crankshaft (old Insight technology)
• Stainless Steel Exhaust (faster warmup)
• Oblique Catalytic Converter (faster warmup)
• Dual Sparkplug + Swirl Action (10.8:1 CR, more compete ignition, intenser combustion)

Claimed FE: 24km/L (56MPG)

1.3l i-VTEC Engine (100hp)

http://i264.photobucket.com/albums/i...oaS/i-VTEC.jpg

• Split Coolant Flow Head (reduces knocking)
• Special Crown Design Piston (reduces knocking)
• Cracked, One-piece Rod forgings (reduces reciprocating mass)
• Pattern Piston Coating (reduces sliding friction)
• Variable Tension Serpentine Belt (reduced low rpm friction)
• Integrated Cylinder Head Manifold (reduces warm-up time)
• Resin Valve Cover (reduces weight)
• Valve Pause (Think VTEC-E, but w/ massive EGR recirculation rather than lean burn)
• Dual Electrode Spark Plugs (hotter spark)

Claimed FE: 24km/L (56 MPG)

BTW -
D15z1 VTEC-E (92hp)
Claimed FE: 20.5km/L (48MPG)

- LostCause