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Vehicle
Inspection
by Bernd Nurnberger
This is about a matter boring to most,
the mandatory
roadworthiness inspection (sha-ken) of the family car. Contrary
to popular opinion in Japan, the actual inspection is a quick and cheap
act. If the car is less than 5 years old and in good maintenance, it is
likely to pass, first try. If you know someone who speaks Japanese, you
can do it yourself. If not, you can hire an assistant for the
inspection.
If you want to be extra sure, let the car dealer do it, but expect to
pay
for preventive maintenance.
As an added bonus, near the end of this
article,
I drift off into the environment and get carried away with engineering
details that cast doubt on the wisdom of antipollution laws.
The
Japanese View
Japanese dread the sha-ken (sha = kuruma
= car,
ken = kensa = inspection) because it is expensive. Depending on the
size
and make of car, it is an event on the order of yen 100,000 - 300,000
(some
US$ 800 - 2500). A large part of this is the weight tax and mandatory
insurance
due at the time, but there is other more or less necessary expense,
depending
on how much you are willing to do yourself.
Contrast this with Germany, where many
car holders
take a half day off, drive up to the public inspection place (found in
every small city), run the car through the tests and pay some $50 to
receive
the coveted "good until" seal for another two years, or a detailed
report
of findings to be re-checked after repair. Of course you can ask the
garage
to do it all, and they will, for a fee. But unless you can trust the
repairman,
you may never know whether certain surprising repairs were really
necessary.
Personal
Experience
Our 1994 Toyota Caldina (known as Carina
wagon
in the UK and in the U.S.) was due for inspection this November.
Beginning in summer,
the shop we bought it from and the other shops we ever had it serviced
at sent us reminder postcards. They sure do work their databases. Even
a gas station we went to only once sent reminders, in addition to our
usual
station. We had made a member's card there and they must have gleaned
the
due date from the windshield sticker, just as a number of sha-ken
service
flyers mysteriously appeared under our wipers during the past few
months.
BTW, if you are concerned about your
privacy what
with all the company and government computers storing data about their
customers (yes, we are, WE pay the government), what would be the
defense
options? Offhand, I can think of one: many of us storing data about
companies
and the government practices and sharing it all. The people know about
big brother as much as big brother knows about the people, hehee...
With
home pages mushrooming everywhere, we are getting there.
Back to the car. The second postcard
from each
shop had their 'special offer' - all inclusive sha-ken package with
change
of oil, filter, air filter, wiper blades etc. Seemed expensive. Let's
take
it apart. Here the unavoidable cost for a 2.0 liter mid-size vehicle.
What
it costs
Common dues at time of inspection (these accrue anyway) in
yen, 1997
figures
-
27,600
Mandatory
liability insurance
-
37,800
Weight
tax
-
1,400
re-registration
stamp fee
Best dealer offer (roadworthiness
inspection
by authorized garage personnel, takes about 2h and includes explanation
to customer)
-
14,300
Regular
Check-up (teiki-tenken)
-
5,300
Sideslip
(toe-in) and headlight alignment
-
3,000
misc.
parts (no idea what)
-
7,000
Inspection
fee
-
8,000
Inspection
arrangement
-
plus tax 5%
Determined to find the necessary minimum,
we asked
around. In recent years, a number of "user sha-ken" shops have sent
their
flyers in the newspapers. They help with the inspection formalities for
a fee of approx. 16,000 yen (US$ 130).
Near our house, there is a small
second-hand car
shop called Atlantis, and one night I went to ask them for an estimate.
We know them by a few of their visitors who chose to park their cars on
the narrow road just opposite our garage, effectively blocking access.
The shop's price for the service was 10,000 yen plus tax. That was it.
And I told the shop owner I wanted to witness the inspection.
Atlantis estimate (roadworthiness
inspection
at public test facility)
-
10,000
Inspection
arrangement
-
plus tax 5%
Difference to the cheapest dealer's
estimate: 27,600.
A standard Toyota sha-ken offer costs even more.
The
Big Day
On the evening before the day of sha-ken, the young shop
employee came
over to pick up the car papers. This young guy rides a Buell motorbike,
that is a Harley-Davidson in racing dress. For this 100hp monster, he
had
even made a cover for the driving belt from carbon fiber. Looks very
professional.
So this employee cam for the papers and also wanted the keys. "No, no,
I'll be there tomorrow. I can drive. I took a day off, I want to see
the
inspection. "
With the aid of my wife we finally got an idea why the young
guy kept
repeating "muzukaashii" (difficult). Not the shop people, but a
subcontractor
would take the car to "sha-ken-jyou", the inspection place. Apparently
he had never admitted owners to the inspection. I guessed no one had
ever
asked to. Took us almost 30 minutes of persuasion to reach a Japanese
solution.
I said "Wakarimashita. Ashita made." (understand, see you tomorrow) and
kept the car key.
The agreed time 13 - 15 o'clock passed while I was reading a
book by
Michael Riversong about the Chinese art of Feng Shui and its connection
with Bau-Biologie (Design Ecology). I went over to the shop. No, the
subcontractor
had not called yet, but our turn would come. Would I please leave the
keys
in the car and everything would be taken care of... I said I'd be over
at home waiting for them and kept the car key.
Around 15:15 the young employee came over and we drove to the
sha-ken-jyou
(public vehicle inspection facility) at Yokohama rikuun-kyoku (Land
Transportation
Authority). We met Mr. Nagamine, a sha-ken touroku dai-kou
(inspection-registration
assistant), apparently self-employed, who had just finished a van for a
nearby dealer and now took care of our car.
Show
the Papers, Ready, Check and Go
The necessary papers:
-
Sha-ken-shou (the old
vehicle registration
document),
-
latest insurance
receipt,
-
latest vehicle tax
receipt.
With these in hand, the handyman went to
pay weight
tax ¥37,800 and inspection fee ¥1,400. I had him drive the car
to the inspection line. I had seen how it is done in Germany but was
not
sure I could do it here, with all instructions only in Japanese.
Just outside the testing area, he handed
the official
inspector an inspection report sheet which he must have gotten from the
office just before. He also removed the wheel caps. The inspector
wanted
to see all lights working, then tapped all 20 wheel nuts with a small
hammer
on a 1.2 meter handle. I was concerned about the new tires. Instead of
185/65-14, I had mounted 205/60-14, just a little wider, with the same
diameter. No problem actually, as long as the tires are not wider than
the wheel well. Visual inspection passed. Contrary to Germany, tire
sizes
are not registered in the vehicle papers.
Inside the testing area, automated
stations tested
the speed meter (40km/h), brakes front, brakes rear, sideslip (toe-in),
headlight alignment (at high beam) and emission at idle. At each
station,
the subcontractor feeds the inspection report into a printer and
received
the needed entries and stamps. Results for the pollution test: CO 0.4%,
(carbon monoxide, legal limit is 0.5%) HC 200ppm (hydrocarbons, limit
is
1200 ppm). These are common values for a gasoline engine with 23000 km,
even without a catalytic converter. Only 4 months ago, Toyota had done
an inspection and as in previous years reported CO 0.1%, HC 100 ppm.
Either
they don't measure at all or it is true what German auto makers say
here,
that the catalytic converters of Japanese models break down long before
the estimated life of 150,000 km. Either way, I don't wonder any more
because
I see black Diesel smoke belching from brand new trucks or Mitsubishi
Delica
vans or Pajero RVs. Commercial and recreational vehicles at the expense
of our health. In Germany, the police issue tickets for such
conspicuous
air pollution and require evidence of repair within two weeks.
While I muse over the role of the
pollution sticker
under the hood (Standard values for the 3S-FE engine: CO 0.1%, HC 100
ppm,
same as Toyota always reported), the subcontractor stops the car over
the
pit. The inspector underground checks the bottom for loose parts with
his
hammer while the plates under the front wheels get agitated
hydraulically.
Noises would indicate suspension flaws. I hear no alarming sounds.
After
the pit we get the final stamp on the report. In just 15 minutes, we
are
through the whole inspection and back at the parking lot again.
Next step is the registration office,
where we
deposit the inspection report and the old sha-ken-shou (registration
document).
Within a minute, a dot-matrix printer spits out the new document and
thus
hold evidence that the car is considered roadworthy for another two
years.
With a scraper, the subcontractor removes the green inspection sticker
from the glass behind (or rather in front of) the rearview mirror. The
new sticker for 1999 is blue. Sha-ken is done. We return home, total 1
hour and some.
Benefits
of Being a TPC Member (or Knowing One)
And now I got to write up this
experience for
my friends and all the other gaijin with cars in Japan. You can easily
save 30,000 yen or more (especially with foreign cars) by insisting
first
on the official roadworthiness inspection, and in case of any defects
found,
you can tell the garage exactly what to repair, and nothing else.
Invest
your savings, e.g. in your computer, for a second hard disk or the
backup
system you just never came around to buying.
If you leave it all to the auto
shop, they
will do preventive maintenance and repairs all right by the book. You
pay
and may not even find out what was really necessary, but your car
passes
on first try. Contrast this with the German system, where the prevalent
approach is to get the detailed report from the public facilities
first,
then repair, then inspect again. The TUVs (inspection associations)
collect
detailed inspection findings of 9 million cars each year and publish
failure
hitlists in a magazine format. If you bargain for a second-hand car or
if you design the next model these reports provide a pretty good idea
where
the weak spots are. Even Japanese auto makers rely on the German
reports,
the Japanese approach - first repair, then test - simply cannot provide
independent unbiased data.
Briefing
on Auto Shops
Toyota garages do better oil changes (they clean the spill
from removing
the oil filter) than the local Autobacs accessory shop (leaves oil on
engine).
Tire specialist Bridgestone balances tires better than both Toyota and
the accessory shops. They even find wheels that are out-of-center. New
car dealers in general offer extremely good rates when you ask them to
rent a car, even if you don't have your own in for repair. Just say
you'd
like to try their ... [model of your choice] for a day or more in a
practical
setting, not just around the block, and that you'd pay for it. Could
they
please arrange "rentakaa" and say how much it costs. Expect some 40%
off
the price of a rent-a-car shop. Car dealers have volume discounts, and
if it is for a customer…
Environmental
Impact Continues
The other day, I went on musing about the air pollution by the
chemical
engines. Back to the unwelcome legalities of emission tests at the
biannual
inspection: They only cover idling, which is frequently used in Japan,
but consumes relatively little fuel, compared to real driving.The
problem is not the fuel the engines burn. The problem is the fuel they
don't burn. In all operation modes, the
4-stroke
engine (as well as any other internal combustion engine) suffers from a
certain percentage of unburned fuel particles which
-
reduce mileage
-
cause pollution
-
cause carbon deposits in the combustion chamber that blacken the oil
and
ruin the engine in the long run.
Here is the plot. The legal limit (in Japan) is 0.5% CO and 0.0012 % CH
in the exhaust gas at idle. This means that some 7.5% of the gasoline
is
legally permitted to not burn completely.
How did I arrive at 7.5%? It is an approximation, based on the
stoichiometric
air-fuel ratio of approx 15:1. If you mix 15 parts of air and 1 part of
fuel, there is just enough oxygen to "completely" burn the fuel and you
get 16 parts exhaust gas. If 0.5% of this gas is CO (there is other
poison,
too) this means 15x0.5%=7.5% of the fuel did not burn completely. I
neglected
a number of pollutants as well as the energy derived from the reaction
that ended prematurely at CO instead of CO2.
For the record, the above is not exact, it shows the order of
magnitude.
Emission measurements are not exact, either, they measure the
concentration
of noxious gases, not the absolute amount emitted. This leaves the
option
to dilute the exhaust gas by designing the engine settings to idle
faster
on a leaner mixture. Although the concentration would drop and comply
with
the legal limit, the total emission (mg of CO and HC per minute) would
rise, no? This antipollution law is better than nothing, but still a
bit
silly. Anyway, most of the fuel is NOT consumed at idle, but during
acceleration
and running at speed. No regular roadworthiness inspection covers that,
only the type approval inspection before a new model is legally put on
the roads. And even that measures and limits concentration only. The
other
necessary factor, fuel consumption, is measured as well, but not
regulated,
because it would disfavor large engines. An economic incentive could
work
here: a hefty gas tax. Maybe then some companies would figure out why
the
amount of energy that actually moves the car is only about 5% of the
total
thermal energy content of the fuel consumed.
What
Fuel Efficiency?
Please excuse that I do not bring scientific precision here.
If you
can do that, let me know, we'll co-author a piece or two. I basically
follow
this approximation: A common family sedan or wagon consumes 7-12 liters
of gasoline running at constant 100km/h. To keep this speed, the engine
needs to output about 12-20 hp. Multiply that power with 1 hour and
keep
the resulting mechanical energy in mind. If the textbook efficiency of
an internal combustion engine is correct (about 30%), the total energy
to achieve 12-20hp for an hour divided by 30% should be the same energy
as is contained in the fuel burned.
It isn't. Some 1.5 - 3 liters of gasoline contain the thermal
energy
equivalent to 12-20 hp for an hour divided by 30%. That would amount to
a mileage of 66-33 km/l or 150-75 mpg. None of our cars achieve that
mileage.
What is wrong? (Not my approximation, I hope.)
Even the newest high-tech computerized engines with GDI
(gasoline direct
injection) do not change that. According to tests conducted in Germany
and elsewhere they make just as much pollution (tested during city and
cross-country standardized drive cycles). Fortunately, GDI fuel
consumption
is somewhat lower in most situations, so even if concentrations in %
and
ppm are the same near the legal limits, the total volume of pollutants
drops as fuel usage drops. However, imagine everyone on this planet
would
move about in cars. We would suffocate. Chemical engines are evidently
a "sunset" technology.
Electric
Vehicles?
Nope. If we use fossil fuel in a power plant to run an EV with
rechargeable
batteries, you need three times as much fuel, due to the various power
conversions until the wheels turn. The various inefficiencies along the
supply chain multiply. Zero emission they are not. Nuclear power plants
also fail to meet zero emission standards, quite literally. The zero
emission
goal may come closer with cars fueled with hydrogen from solar panels
or hydroelectric power
plants, but even these require energy to build them. Yet, focusing on a
car's energy consumption is the correct approach - it is 90% of its
total
energy use. 10% is used in making the car itself and I have no
figures
on energy used for recycling its parts.
Conclusion
The analogy between cars and computers, especially comparing
the progress
in speed and price has been strained in practical jokes. Add energy
efficiency,
too. For computers, these are all benefits of miniaturization. Everyone
would welcome cars that are cheap and powerful. But who wants a car
with
a computer's level of reliability and its shrinking size?
Happy and safe motoring. Use seat belts
always.Use
drugs never. Support better technology. If we happen to be re-born, we
want clean air on this planet, among other things.
Copying,
distribution
and reprinting encouraged and permitted with below copyright note
intact.
All other rights reserved.
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