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Mazda unveils world’s first cycle engine |

MAZDA, A company re-
nowned for its innovative
engineering and pioneering
spirit, has announced the
development of the world’s
first Miller-Cycle engine
designed for automotive appti-
cations.

The company will offer this
engine in the new 1995 Mazda
Millenia, which weat on sate in
March of this year. .

A Miller-Cycle engine, named
after its originator, Ralph Miller,
delivers the high fuel-efficiency of
a smaller engine with the greater
torque of a larger engine. Mazda's
Miller-Cycle engine is able to pro-

duce a level of torque 1.5 times as

GM exec
spelis out
recipe for
marketing
Success -

“QUALITY AND reliability,
along with value, continue to
be at the top of the list of the
most important factors for
prospective buyers when
choosing a vehicle,” according
to Tom Mason, . General
Motors of Canada’s vice-presi-
dent of marketing.

Mason's remarks were part of a
media presentation he made in mid-
February at the 1994 International

Auto Show in Toronto. ;
In striving to be the best, he said

“GM is changing the way in which

quality and reliability are being
delivered to the buyer through
improved manufacturing processes
for higher levels of accuracy ia
engineering, fit and finish; new
materials that look and wear better;
and the application of new tech-
nologies in the vehicles themselves.

“For example, our new 1995
Chevrolet Lumina and Monte
Carlo, being built at our car assem-

~bly plant in Oshawa, Ontario, have

more features than their predeces-
sors, but contain several hundred
fewer parts and take about one-third
less time to assembic.”

- The first Monte Carlo rolled off
the line on Valentine’s Day, and the
first Lumina on March 7.

“This results.in better quality
and reduced costs,” Mason said.
“which means we can provide even
greater value for our customers.”

The new Chevrolet entries are
pavt of a product renaissance that
began with the 1992 Blazer and
Suburban, the 1993 Camaro and the
new 1994 S-10 pickups, as well as
the new Camaro convertible going
on sale later this spring.

General Motors is bringing 20
new or revised vehicles to niarket
over the next 18 months, Mason
added, “but to be competitive in
today’s marketplace, it takes more
than just quality products and value
pricing.

“Today it's vitally important for
a dealer to develop direct, positive
relationships with their customers.
The way people are treated through
the buying and ownership experi-

ence is one of the most important

factors in delivery customer satis-
faction.”

high as a conventioaal engine of

the same displacement. Torque is
the amount of twisting force the
engine delivers to the wheels.
Mazda's new caging provides
ample power for accelerating and
superb response, While saving fuel,
Beeause Mazita’s MillereCycle
cogine allows a smaller engige to
do the same amount of work as a
larger one and its high expansion
ratio allows high thermal efficien-
cy, it returns 10 to (5% better fuel
efficiency than conventional
engines of comparable perfor-
mance. This improved fuel-effi-
ciency also reduces carbon dioxide
emissions by the same amount.
Conventional engines, known as
Otto-cycle engines for German
inventor Nicholas Otto, are charac-

REGENCY

terized by four equal strokes during
the combustion eyele: intake, com-
pression, expansion and exhaust,
Because the length of each stroke
is the same, the compression caitio
equals (he expansion ratio,

Previously, i order to inercase
caging targue, one of two methods
was available: increase enuine dis-
placement or force more air and
fuct into the combustion chamber,

Increasing displacement results
in reduced fuel etficieney since the
energy consumed to cun the engine
itself increases in proportion to the
size of (he engine. Forcing more air
into (he combustion chamber can
achieve the high fuel-efficiency of
a smaller engine with the drivabili-
ty of a larger engine.

When a large amount of air is

pushed inte the cylinders and com-
pressed, the air tn the cylinder
increases in temperature and tends
to produce abnormal combustion
— known as knouking or pinging,

In order to prevent (his undesir-
able effect the compression ratio ts
lowered, which also lowers the
expansion ration AS at result, the
benefits of foreing more air inte the
cylinder are lost, minimizing the
effective energy conversion and
limiting any fuel efficiency gains

The Miller-Cycle engine de
the closing of the intake valves
until after the piston has risen
approximately one fifth of its
stroke.

This effectively reduces the
practical compression ratio, thus
reducing the possibility of abnor-

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mil combustion, while allowing
the full expansion of the combus-
lion gases in the cylinder, which
maximizes its thermal efficiency.

To fully realize the potential of
the Miller-Cyele engine, Mazda
has added a Lysholm compressor
lo force large amounts of air inta
the cylinder.

This application of a Lysholm
conipressor is the world’s first in
an auomotive application, [tis the
result of a joint program between
Mazda and THI of Japan,

Mazda’s Miller-Cycle engine is
an automotive solution to the
increasingly important balance
between the need for the high {uel-

efficiency of small engines and the

desire for the power and drivabitity
found in larger engines.

94 MYSTERE

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Sterling 1410

iz

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(NORTH SHORE)
MAZDA

700 block, Marme Drive, North Vancouver

987-4458

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