Aerospace Engines A to Z
Aerospace Engines A to Z

Updated: 28-Apr-2020

At a Light-Aviation Show in France, Marcel Echard presented the 4D engine, an improvement of the previous 4C-02 and 6A-01.

Echard 4-D
"Echard 4-D"

-We see a picture with a view of the engine on the magnetic plate side. It was used in motorized gliders, it displaced 1000 cc and gave 35 CV at 2,800 rpm.

-It weighed 35 Kgs and run with the two-stroke cycle.

From Appendix A1/6: Better known as Echard-Lutetia (see both names).

-We have obtained a drawing of the engine from the epoch following WWII. The architecture of this engine can be clearly seen.

- It has six radial double cylinders, running with the two-stroke cycle and has an intake compressor located in the box where other engines have the gear.

Echard-Lutetia
"Echard-Lutetia"

Engines of ECHARD

Model: 4C-02

Arquitecture:
Cooling:
Total Displacement:
Bore / Stroke: x
Power:
Weight:

Other details:
Model: 4D

Arquitecture: 2-stroke4-cylinder Radial
Cooling:
Total Displacement: 1000 cc
Bore / Stroke:
Power: 35 CV @ 2800 rpm
Weight: 35 Kg

Other details:

It has 4 double cylinders.

Echard 4-D

"Echard 4-D"

Model: 6A-01

Arquitecture:
Cooling:
Total Displacement:
Bore / Stroke: x
Power:
Weight:

Other details:
Model: Echard-Lutetia

Arquitecture: 2-stroke6-cylinder Radial
Cooling:
Total Displacement:
Bore / Stroke:
Power:
Weight:

Other details:
Echard-Lutetia

"Echard-Lutetia"

The author of this edition of Aeroengines AtoZ, through Aeroteca, collaborated on Version 2 of this video, which is presented here.

To understand the operation of the connecting rods, the 1929 Continental R 670 single-cylinder engine was chosen.

A demonstration of Version 3, improved at the author's suggestion, is also available on YouTube at a later date. This version shows bronze valve guides, improved valve spring movement, and the split crankshaft counterweights and front bearing balls also move.

The design is from Juan Soler, Sant Cugat, Barcelona

Below we show a flash of version 3

Counting also with the coloboration of JMC of Enginys Mecanics in Mataro, Barcelona