by Graeme Fletcher of National Post
TOCHIGI, JAPAN Honda has suddenly awoken from the slumber that has seen
several of its recent product launches arrive with what was essentially
a carryover powertrain. Having introduced three new hybrid systems (see
page DT4), Honda’s under-hood engineering is about to get a major
overhaul.
The activity will see a new range of engines, each of which will now
feature direct injection along with Honda’s iVTEC system and variable
cam phasing. The first of the new breed is the base engine in the
recently released Honda Accord — a 2.4-litre four with 185 horsepower
and 181 pound-feet of torque. The lineup will grow in the coming years
to include a 1.0L three-cylinder engine, 1.5L, 1.8L and 2.0L
four-cylinder engines and a range-topping 3.5L V6. More intriguing is
that all, with the exception of the V6, will be offered with
turbocharging.
While the horsepower and torque numbers of the three- and four-
cylinder engines will not be made available until closer to launch time,
there was a hint: When I asked an engineer about the potency of the
1.0L turbocharged engine, he played coy, but he could not resist smiling
broadly and nodding when I suggested it would make in excess of 120 hp.
I drove a Honda Fit equipped with the new 1.5L engine and CVT
transmission. While I am still not overly enamoured with the
transmission, the engine proved to be just fine. The tip-in response is
crisper than the current engine and it has a noticeably stronger pull
through the mid-range (a claimed 15% improvement in acceleration
performance). It is also more fuel efficient — more than 10%. Expect
this combination to debut when the current Fit is overhauled. This will
likely happen when Honda’s new assembly plant in Mexico comes on line in
2014.
There is more known about the 3.5L V6. Along with the direct
injection and iVTEC with cam phasing, it will earn cylinder
deactivation. Under light loads, it shuts down three of its six
cylinders and uses active noise cancelling to mask the change in the
engine’s tonal quality. It also boasts plenty of power. The preliminary
numbers say 310 hp and 265 lb-ft of torque. This represents a 5%
increase in torque and a 10% boost in fuel economy compared with the
current 3.5L V6.
Another
of the pleasant surprises, and one that would work very nicely in the
CR-V, is a totally new 1.6L turbodiesel. While it only produces 120 hp,
it twists out 221 lb-ft of torque — the CR-V’s gas engine makes 185 hp
and 163 lb-ft. This means there would be little change in performance (I
suspect it might actually improve at the low end), but there would be a
huge step forward in fuel economy. The CR-V and its gas engine is rated
at 6.4 litres per 100 kilometres on the highway; the turbodiesel is
rated at 3.6 L/100 km.
The engine that truly shocked me was under the hood of the overtly
funky N-One. This tiny car has surprising roominess along with the right
features and flexibility — it would be a great addition to Honda
Canada’s portfolio and the perfect foil for the likes of the Fiat 500,
Mini and Smart fortwo. Alas, this is not likely to happen any time soon.
What surprised me was its engine. Displacing a mere 660 cubic
centimetres (yes, 0.66L), I was not expecting much as I headed out on to
the high-banked oval that rings Honda’s R&D facility. Cranking it
to life saw it produce the grumbly sound engines with an odd number of
cylinders tend to make. In short, as I pulled out on to the oval, I was
prepared to be less than impressed.
Standing on the gas, however, saw this retro-styled box pick up its side
sills and romp off toward the first corner. While this diminutive mill
only puts out 63 hp and 77 lb-ft of torque at 2,600 rpm, it is enough to
deliver impressive performance in this application. Firing its power
through a broad-ratio CVT, the N-One scooted to 100 kilometres an hour
as quickly as any self-respecting car with a naturally aspirated 1.3L
engine under the hood. Hitting the back straightaway saw the speedometer
needle sweep past its 140-km/h maximum and point straight down. Here
was a tiny ride scooting along at 150 km/h or so and feeling entirely
comfortable in the process. At the end of the lap, I pulled into the pit
lane mightily impressed. Not only did it have surprising alacrity in
posting a speed I did not expect to see, it delivers a claimed average
fuel economy of 5.4 L/100 km in the process.
The smile-inducing ride proved to be a race-prepared CR-Z — a racing
suspension (as in virtually no travel!), a roll cage and deep-dish front
seats with five-point harnesses. While the engine was stock, meaning
122 hp and 123 lb-ft of torque at 1,000 rpm, it had a very neat feature —
a lone paddle shifter on the right side of the steering wheel. Rather
than altering the CVT’s ratios, it offered a pull-to-pass function.
Running down the long straight of the banked oval at 130 km/h, I pulled
said paddle and the electric motor kicked in to give the CR-Z the
benefit of its ponies. In the normal CR-Z, the computer determines when
and how the electric motor assists. True, the ability to tinker with the
hybrid’s operational characteristics runs contrary to the green theme
of this sporty runabout, but it would be a very welcome addition to the
road-going version.
Source;
http://life.nationalpost.com/2012/11/19/honda-launches-new-engine-offensive/
No comments:
Post a Comment