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Vacuum Wiper Motor

French translation: moteur d'essuie-glaces utilisant le vide du moteur

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GLOSSARY ENTRY (DERIVED FROM QUESTION BELOW)
English term or phrase:Vacuum Wiper Motor
French translation:moteur d'essuie-glaces utilisant le vide du moteur
Entered by: jemo
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05:49 Mar 4, 2004
English to French translations [PRO]
Tech/Engineering - Automotive / Cars & Trucks
English term or phrase: Vacuum Wiper Motor
Automotive part
Olivier Den Hartigh
France
Local time: 18:08
moteur d'essuie-glaces utilisant le vide du moteur
Explanation:
C'est ou très ancien, ou ça vient de sortir:

"Windshield wipers
See Figure 1

The first windshield wipers were an inside, hand-operated crank connected to an outside arm holding a rubber wiper blade, and operated back and forth by the driver. Later, for the convenience of the passenger, a blade and arm was installed on the passenger's side of the windshield and connected to the arm on the driver's side by linkage and operated in tandem with the driver's wiper.

This was unsatisfactory and was replaced by the vacuum wiper motor that operated the wiper arms using the vacuum from the car engine. This type of motor was used as late as the early '20s, mounted along the roof line and later moved to the cowl panel, directly below the windshield.

The major difficulty plaguing the vacuum motor was its inability to maintain a constant wiper blade speed. As the engine vacuum was lowered (when the car went uphill for instance), the wipers would stop and cause visibility problems. Vacuum holding tanks with one-way check valves and mechanical vacuum pumps were used to maintain a constant vacuum supply, but as the car designs changed, the windshield became larger and the wiper motor's work load increased. The added workload could not be handled by vacuum wipers.

Vacuum wipers gave way to electric wiper motors, first installed on cars as an option as early as 1940. The electric motor was dependable and could operate the wipers independent of the fluctuation in engine vacuum, and by 1972; all original equipment vacuum wiper motor installations had ceased."
http://www.icarumba.com/cobrands/contentmodules/resourcecent...

"Les Américains aussi développèrent très tôt une installation d'essuie-glace qui fonctionnait sur le vide du moteur. Le système présentait le grand inconvénient que lorsque le nombre de tours augmentait - donc par grande vitesse - le vide diminuait et les essuie-glace fonctionnaient plus lentement. Les plus âgés d'entre nous se souviennent sûrement encore de l'installation d'essuie-glace dans les premières années de la 2cv lorsque les essuie-glace étaient reliés au câble du compteur de vitesse. Cela procurait, il est vrai, une vitesse d'essuyage en rapport avec la vitesse de roulage, mais c'était une véritable catastrophe lorsqu'il fallait consulter les panneaux indicateurs à un croisement encombré. "
http://rb-aa.bosch.com/bosch/promotech/fr-BE/print.cfm?mltk=...




--------------------------------------------------
Note added at 9 hrs 49 mins (2004-03-04 15:39:21 GMT) Post-grading
--------------------------------------------------

Merci Alexandre pour la précision
Les deux sites suivants mentionnent les \"essuie-glaces à dépression\"
http://www.rotilom.com/juin44/gmcpg3_1.htm
http://www.lequotidienauto.com/mag/030616/ford100/default3.a...

Selected response from:

jemo
United States
Local time: 12:08
Grading comment
Merci beaucoup
4 KudoZ points were awarded for this answer

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Summary of answers provided
3 +1moteur d'essuie-glaces utilisant le vide du moteur
jemo


  

Answers


11 mins   confidence: Answerer confidence 3/5Answerer confidence 3/5 peer agreement (net): +1
vacuum wiper motor
moteur d'essuie-glaces utilisant le vide du moteur


Explanation:
C'est ou très ancien, ou ça vient de sortir:

"Windshield wipers
See Figure 1

The first windshield wipers were an inside, hand-operated crank connected to an outside arm holding a rubber wiper blade, and operated back and forth by the driver. Later, for the convenience of the passenger, a blade and arm was installed on the passenger's side of the windshield and connected to the arm on the driver's side by linkage and operated in tandem with the driver's wiper.

This was unsatisfactory and was replaced by the vacuum wiper motor that operated the wiper arms using the vacuum from the car engine. This type of motor was used as late as the early '20s, mounted along the roof line and later moved to the cowl panel, directly below the windshield.

The major difficulty plaguing the vacuum motor was its inability to maintain a constant wiper blade speed. As the engine vacuum was lowered (when the car went uphill for instance), the wipers would stop and cause visibility problems. Vacuum holding tanks with one-way check valves and mechanical vacuum pumps were used to maintain a constant vacuum supply, but as the car designs changed, the windshield became larger and the wiper motor's work load increased. The added workload could not be handled by vacuum wipers.

Vacuum wipers gave way to electric wiper motors, first installed on cars as an option as early as 1940. The electric motor was dependable and could operate the wipers independent of the fluctuation in engine vacuum, and by 1972; all original equipment vacuum wiper motor installations had ceased."
http://www.icarumba.com/cobrands/contentmodules/resourcecent...

"Les Américains aussi développèrent très tôt une installation d'essuie-glace qui fonctionnait sur le vide du moteur. Le système présentait le grand inconvénient que lorsque le nombre de tours augmentait - donc par grande vitesse - le vide diminuait et les essuie-glace fonctionnaient plus lentement. Les plus âgés d'entre nous se souviennent sûrement encore de l'installation d'essuie-glace dans les premières années de la 2cv lorsque les essuie-glace étaient reliés au câble du compteur de vitesse. Cela procurait, il est vrai, une vitesse d'essuyage en rapport avec la vitesse de roulage, mais c'était une véritable catastrophe lorsqu'il fallait consulter les panneaux indicateurs à un croisement encombré. "
http://rb-aa.bosch.com/bosch/promotech/fr-BE/print.cfm?mltk=...




--------------------------------------------------
Note added at 9 hrs 49 mins (2004-03-04 15:39:21 GMT) Post-grading
--------------------------------------------------

Merci Alexandre pour la précision
Les deux sites suivants mentionnent les \"essuie-glaces à dépression\"
http://www.rotilom.com/juin44/gmcpg3_1.htm
http://www.lequotidienauto.com/mag/030616/ford100/default3.a...



jemo
United States
Local time: 12:08
Works in field
Native speaker of: Native in FrenchFrench
PRO pts in category: 208
Grading comment
Merci beaucoup

Peer comments on this answer (and responses from the answerer)
agree  Alexandre Godts: Agree, but the correct term in French is "moteur d'essuie-glaces à dépression". C'était un système utilisé sur les vieilles voitures US qui avait l'inconvénient que, quand on accélérait, l'essuie-glaces s'arrêtait!
9 hrs
  -> C'est juste.Merci pour la précision! Deux sites les mentionnent:
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