Econometer

(Difference between revisions)

Revision as of 22:00, 13 January 2025

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Overview

Search: サニーエコノモニターᴳ Sunny Economonitor

Search: サニーエコノメーターᴳ Sunny Econometer

A fuel-economy gauge signals to the driver the current engine state as it relates to fuel economy. Red or Yellow means poor fuel economy, Green means good fuel economy. This most directly relates to how far the accelerator pedal is pushed, so you might think the gauge is of limited use. However, up to 30% fuel economy gains can be achieved by tailoring your driving style to match. It is surprising how easing up on the pedal will affect economy, while still accelerating the car.

The Datsun gauge for the B210 was called was called Econo Meter/エコノメーター. The B310 version of the econometer (per Datsun catalog) was called Economonitor in Australia and ECONO MONITOR エコノモニター in Japan.

In operation, a green light appears at low throttle openings, and a red light at heavy throttle. It is of course a type of vacuum gauge. Does it work to enhance fuel economy? Yes. By keeping acceleration light, the driver can achieve fuel savings up to 30%. And yet you still have maximum power available, should you decide to put your foot down and throw economy to the wind.

In more general use, consider this quote by Bosch:

An Econometer is merely a vacuum gauge with different markings to directly indicate the economy benefits of each area of vacuum operation.

Cars in the new millenium often have a fuel-consumption gauge which gives an instantaneous reading of liters/kilometer or miles/gallon. The econometer is a simpler technology, and perhaps is more enlightening to the driver.

Some new cars have an electronic fuel-economy gauge, with red/green lights or a power/eco readout. This works the same as an econometer and is based on vacuum.

B210

<-- back to B210 Gauges

For Japan, after '75-10 an Econometer (vacuum gauge) was fitted to the GL, in the tachometer spot (round or square). Since the tachometer was standard on GX, the Econometer was not available on the performance-oriented model.

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Round

brochure

1600 GL
brochure

Square

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エコノメーター(1600·1400GL系)。省燃費時代に対応。経済走行の指針です。 Econometer (1600/1400GL series). A guide to economical driving, in keeping with the current fuel-saving era.

B310

<-- back to B310 Dash

With the B310 meter, a green light appears at low throttle openings, and a red light at heavy throttle. This indicates the relative fuel economy.

24895-H9000 ECONOMONITOR ASSY GL,SGL -7811 [large type]
24895-H9010 ECONOMONITOR ASSY GL,SGL 7812-7909 [small type]

H9010 ECONO MONITOR Japan in GL dash small gauge on right side along with EXH TEMP and BRAKE lamps
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H9000 Round dash early -7811 with lights for OIL and CHG. The tubes on the back are for the bulbs
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Aftermarket

S-Light ECONO METER 集中式操作盤 Centralized Operation Panel
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Sun EconoMeter ECM-30

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Sun Electric Corporation Tachometer Division Chicago, Illinois USA

Sun was a manufacturer of diagnostic tools for the automotive industry. Founded in 1931, they merged with Snap-onᵂ in 1993. In 2025, Snap-on diagnostic products are sold in Europe and Brazil under the name Sun. Since the 1980s Sunpro was the market name in the USA, but now discontinued after Bosch bought Actron.

SUNTUNE CP7965 Econometer Gauge Kit (Suntune products by Pentron) Actron CP7965
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Suntune ECONO METER

CRYPTON Econometer DRIVING GAUGE MODEL NO B.1. (Complementary Instrument B1)
British manufacturer Krypton. The internal disk rotates and the color changes
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