Honda Automobiles: 2015 Honda Fit

Posted on 10. Jun, 2014 by in Honda Canada

Overview
In gripping with Honda’s mission, to yield both fuel potency and fun-to-drive during a high level, a 2015 Fit is powered by an all-new Earth Dreams Technology 1.5-liter engine interconnected with possibly a new six-speed primer delivery (6MT) or a new Continuously Variable Transmission (CVT). A module of weight saving, attrition reduction, record focus and crafty engineering resulted in an 11 percent boost in horsepower to 130, and a 7.5 percent boost in torque to 114 lb-ft over a prior Fit’s engine. A identical proceed constructed transmissions that assistance yield quicker acceleration, smoother changeable and class-leading EPA fuel-economy ratings of 29/37/32 (city/highway/combined)1 for primer delivery models, 33/41/36 for a LX trim with CVT and 32/38/35 for a EX and EX-L trims with CVT.

Key New Powertrain Features

  • Engine
    • i-VTEC® (intelligent Variable Valve Timing and Lift Electronic Control) for intake valves with Variable Timing Control (VTC)
    • Computer-controlled approach injection (DI) with multi-hole fuel injectors
    • All-plastic intake manifold
    • Lower friction
    • Reduced weight of relocating parts
    • Valve hole increase, decreased retard diameter
    • Improved cylinder/piston cooling
    • 100,000 +/- miles tune-up interval
  • EPA Fuel Economy Ratings (city/highway/combined)1
    • 6MT: 29/37/32 mpg
    • CVT (LX): 33/41/36 mpg
    • CVT (EX, EX-L): 32/38/35 mpg
  • Continuously Variable Transmission (CVT)
    • New pattern replaces required involuntary delivery (design common with Civic yet with Fit-specific tuning)
    • Wider ratio range
    • High-rigidity belt
    • Reduced friction
    • Increased torque converter capacity
    • Reduced weight and size
  • Six-Speed Manual Transmission (6MT)
    • New design
    • Optimized rigging ratios with wider range
    • Shorter change push cadence with rebate insurgency for softened change feel

Engine
The Fit’s new Earth Dreams TechnologyTM engine retains a same 1.5-liter banishment as a prior powerplant, yet that’s usually about a usually thing that carries over. Primary among a changes, a new engine facilities approach injection and a DOHC i-VTEC+VTC valvetrain-a initial in a subcompact, that replaces a pier injection and SOHC i-VTEC valvetrain of a prior engine. A horde of other upgrades and refinements were done to optimize combustion, revoke weight and minimize attrition to boost both energy and fuel efficiency.

The valvetrain of a new engine is upgraded to DOHC with i-VTEC valve operation that includes Variable Timing Control (VTC). At revoke engine speeds, a i-VTEC complement employs milder cam profiles, formulating shorter valve operation and reduced valve lift to broach strong torque and fuel efficiency. At aloft engine speeds, i-VTEC triggers some-more assertive cam profiles that furnish longer valve operation and incomparable valve lift for some-more horsepower. The VTC complement assists in this routine by adjusting intake cam phasing to retard valve timing during revoke engine speeds for softened fuel potency and advancing timing during aloft speeds to boost valve overlie for reduced pumping waste and some-more power. Both a intake and empty valves have a incomparable hole for incomparable airflow capacity. The intake valve distance is increasing from 28mm to 29mm and a empty valves lengthened from 23mm to 25mm.

The lengthened valves lay in a newly designed cylinder conduct that includes a smaller M12 sparkplug, down from a prior M14. The conduct also includes approach injection multi-hole fuel injectors with a tiny hole bore, an ascent from a prior engine’s pier injection. Higher-pressure approach injection optimizes fuel atomization permitting for some-more fit combustion. To yield a high-tumble intake assign that serve enhances explosion efficiency, both a intake pier and piston climax have special designs. The piston crown’s pattern also leads a atomized fuel mist from a injector projection toward a sparkplug electrodes for some-more fit ignition and to forestall fuel depositing on a cylinder walls. The 10 percent aloft focus ratio, lifted to 11.5:1 from 10.4:1, and softened explosion potency minister to increasing torque and softened engine responsiveness.

To serve support responsiveness, a rotating mass of a crankshaft was reduced by 27 percent by regulating 4 instead of 8 counterweights and a biography hole was reduced from 50 mm to 46 mm. Additional engine weight assets were performed by a use of particular main-bearing caps instead of a incomparable temperament top structure of a prior engine, and by utilizing an all-composite intake manifold. To conduct explosion heat, an oil jet was combined to mist cooling oil onto a underside of a piston, that also helps with lubrication. Also, an aluminum sleeve was combined above a cylinder sleeve to urge feverishness send from a cylinder block. The outcome of all this work is significant: Horsepower and torque are adult significantly via a rev range, with arise torque nearing 200 rpm progressing than in a prior engine.

Six-Speed Manual Transmission
The all-new six-speed primer delivery (6MT) offers many advantages over a prior Fit’s five-speed unit. The serve of a sixth rigging authorised a altogether ratio operation to be 5 percent wider, providing softened fuel efficiency; and a ratios between third and sixth gears are closer for optimized engine performance. The new 6MT’s initial rigging is 5 percent lower, third rigging is 5 percent higher, fifth rigging is 11 percent revoke and a new sixth rigging has a same ratio as a prior fifth gear.

Another advantage of a new delivery is severely softened change feel for sportier and easier rigging changes. Through member pattern changes, a cadence of a rigging change push is condensed 10 percent for quicker, sportier rigging changes. This shorter cadence is also accompanied by a poignant rebate in changeable effort. Additionally, engineers achieved a 25 percent rebate in change wire changeable insurgency yet optimization of a cable-end bushing rigidity. An softened change push joint also aids smooth, certain shifting.

Continuously Variable Transmission with G-design Shift
Available on LX and EX models and customary on a EX-L is a new Continuously Variable Transmission (CVT) tuned privately for a Fit. While providing incomparable fuel efficiency, a CVT also delivers some-more manageable and linear acceleration compared with a prior five-speed involuntary (5AT) as good as required CVTs. Several aspects of a new CVT support in this twin benefit.

A new-design torque converter that is thinner yet with an increasing ability optimizes a send of a engine’s energy to a CVT for softened linearity in engine speed relations to stifle application, and it eliminates a extreme engine revving common with required CVTs. The new CVT has a 14 percent wider ratio operation that allows a engine to work in a some-more optimal operation for both good opening and softened fuel potency underneath all pushing conditions; this is generally felt with reduced engine speeds during aloft car speeds. A newly grown high-rigidity expostulate belt, new CVT liquid permitting reduced pulley vigour on a belt, and a CVT warmer serve extend a unit’s efficiency.  

Great efforts were also done to minimize size, weight and friction. The oil vigour control section and stator prong were redesigned for one functionality and a parking rigging was integrated with a outlay pulley, both of that revoke distance and save weight. The CVT box figure is optimized for lighter weight, a submit and outlay pulley missile diameters are reduced, and a pulley V-body breadth is narrower. A smaller forward/reverse resource with a reduced-diameter ring gear-made with aloft strength steel-is used to make a CVT section some-more compact. Other weight reductions were satisfied with a smaller volume of CVT liquid and lighter-weight final shaft, differential and bearings. In sum a weight reductions resulted in a CVT being 16 percent lighter than a prior Fit’s 5AT. Lower attrition was performed by regulating a some-more optimized oil siphon capacity; a perplex image to revoke oil agitation; and revoke attrition finish bearing, sign ring and retreat clutch.

G-design Shift Feature
The Fit CVT is designed to yield a best rigging ratio for a pushing conditions, and to offer a some-more healthy pushing feel and to discharge a “rubber-band” feel infrequently compared with CVT transmissions. The new CVT has special “G-design shift” proof that is designed to offer some-more evident acceleration response than possibly required automatics or other CVT designs. When abruptly requesting energy from a steady-state cruising speed, a Fit CVT immediately sends energy to a expostulate wheels while concurrently adjusting a rigging ratio (seamlessly and gradually downshifting) to uniformly move a engine to a horsepower arise in a linear way.

By comparison, a required involuntary is slower to respond and loses time creation mixed downshifts. Since a involuntary delivery has a singular series of separate, dissimilar ratios, even when entirely downshifted, it can usually estimate a best engine rpm as speed increases. This cuts into acceleration. Compared to other CVT systems, a Fit CVT offers stronger acceleration response with a linear arise in engine rpm. G-design change proof gives a Fit a some-more linear, sporty-and eventually satisfying-driving feel.

Paddle Shifters (EX, EX-L)
On EX and above models, a CVT delivery can be tranquil with steering wheel-mounted, dual-mode paddle shifters to yield a some-more enchanting motorist experience. D mode is entirely automatic; however a paddle shifters can be used to downshift a delivery for incomparable engine braking for situations such as forward a high hill. The delivery can also be upshifted in D mode. When a paddle shifters are used in D mode, full involuntary operation will resume after a brief time. For energetic driving, S mode includes 7 ratios and maintains a comparison ratio until a motorist operates a paddle shifters again. In S mode a complement will usually change automatically to forestall over-revving or lugging a engine.

ECO AssistTM (CVT)
All 2015 Fit models embody Honda’s ECO Assist™ record that can assistance drivers rise pushing habits that raise fuel potency by watching a speedometer ECO Assist light response to pushing practices. Fuel-saving behaviors like well-spoken acceleration and braking make a scale heat green. Less fuel-efficient pushing habits will means a scale to heat blue-green, while assertive starts and stops that devour additional fuel will means a scale to heat blue. In serve to a ECO Assist™ technology, on CVT models drivers can also rivet a green, dash-mounted “ECON” symbol to serve optimize complement control of a transmission, engine and other powertrain elements to assistance preserve additional fuel.

Powertrain Features

 

1 2015 EPA mileage ratings. Use for comparison functions only. Your mileage will change depending on how we expostulate and say your vehicle.
2 LEV3-ULEV125 models as approved by a California Air Resources Board (CARB).
3 Does not request to liquid and filter changes. Will change with pushing conditions. Please see your Honda play for details.

Tags: ,

Comments are closed.