![\"\"](\"https:\/\/autorai.nl\/wp-content\/uploads\/2019\/12\/DAF-Museum-AutoRAI.nl-Fotoreportage-december-2019-Foto-10-1140x855.jpg\")
<\/figure>\nWhat is a CVT automatic?<\/strong><\/h2>\nThe name says it all: the CVT is a continuously variable transmission. The transmission of the power from the motor to the wheels is therefore automatically continuous and infinitely variable. You don’t feel any jolts like you do with a conventional automatic transmission. At any speed, the engine runs at the most favorable speed, i.e. optimally efficient for the lowest possible consumption versus \u2013 depending on the driving conditions \u2013 optimum pulling power or optimum power.<\/p>\n
How does a CVT automatic work?<\/strong><\/h2>\nImagine a racing bike with a derailleur by the chainrings between the pedals and one by the rear sprockets. This allows you to manually move the chain from a small to a larger sprocket while driving \u2013 and back again. If you want to cycle away from a standstill, you need a low gear. The chain is then wrapped around the smallest sprocket at the front and the largest at the back. If you want to drive faster, choose a higher gear.<\/p>\n
The CVT automatic transmission actually does the same, only automatically and completely stepless. The metal push belt does not run over gears, but through two pulleys \u2013 the groove in its circumference becomes deeper towards the middle. The front pulley (the primary) is driven by the motor, the rear (the secondary) drives the wheels. Both pulleys can vary infinitely in diameter because their halves move apart and towards each other. When the front pulley is fully open, the rear is fully closed. The push belt then makes a small bend in front of it and a large one behind it, just like the racing bicycle chain. Ideal for starting from a standstill.<\/p>\n
Shifting with CVT automatic transmission<\/strong><\/h2>\nThe engine makes relatively high revs when starting, as if the clutch is slipping, but the car accelerates smoothly. As the speed increases, the primary pulley closes further and further thanks to ingenious technology and the push belt makes a larger bend. The opposite happens with the secondary: the belt pushes it further open and the bend made by the push belt becomes smaller. This makes the transmission longer (‘higher gear’) and the car achieves a higher speed without increasing the engine speed and without interrupting acceleration due to the driver having to change gears.<\/p>\n
Under the influence of, among other things, the position of the accelerator pedal, the load on the engine and the speed, a computer controls the diameter of the primary pulley and thus the transmission ratio (the ‘gear’). All this takes place completely steplessly and comfortably, both accelerating and upshifting as well as decelerating and downshifting again.<\/p>\n
CVT automatic also with stairs<\/strong><\/h2>\nStill, some people don’t like the fact that the speed is constant while the driving speed varies. They then have the idea that the clutch is slipping. Partly for this reason, some car manufacturers have launched models with a CVT that does have a number of (electronically controlled) stages, which can even be selected manually. Of course the customer is king and of course the stairs can come in handy when towing a trailer, but doesn’t the ingenious continuously variable transmission miss the mark?<\/p>\n
Push belts for CVT automatic transmission<\/strong><\/h2>\nThere are various manufacturers of continuously variable transmissions, but the essential push belts are produced in Tilburg by VDT (Van Doornes Transmissie, yes the Van Doorne from DAF<\/a> , but now VDT is owned by Bosch). The push belts are made up of two parallel packages of steel belts, between which and over which numerous metal plates run. These plates push each other forward and transfer the driving force from the primary to the secondary pulley. Due to the shape of the plates, they can pivot relative to each other so that the push belt runs smoothly through the pulleys of ever varying diameter.<\/p>\nCar brands with CVT automatic transmission<\/strong><\/h2>\nIn the eighties, the Subaru Justy and the Fiat Uno with a CVT were the first to appear on the market. More followed later, such as Dodge, Ford, Rover, MINI (BMW), Suzuki and many others, mainly Japanese, Korean and American brands.<\/p>\n
Williams Formula 1 with CVT automatic transmission<\/strong><\/h2>\nEven the Williams Formula 1 team, which was very successful at the time, equipped its FW15C with a CVT in 1993. The car was already so unheard of fast in development testing that Formula 1 leadership banned the use of the CVT. Because the CVT continuously kept the engine at the speed at which it was delivering its maximum power, the Williams was about four seconds per lap faster than the competition\u2026 The ban also delayed the development of the CVT for use in normal passenger cars.<\/p>\n![\"\"](\"https:\/\/autorai.nl\/wp-content\/uploads\/2019\/12\/DAF-Museum-AutoRAI.nl-Fotoreportage-december-2019-Foto-94.jpg\")
<\/figure>\nVariomatic predecessor of CVT automatic transmission<\/strong><\/h2>\n
Imagine a racing bike with a derailleur by the chainrings between the pedals and one by the rear sprockets. This allows you to manually move the chain from a small to a larger sprocket while driving \u2013 and back again. If you want to cycle away from a standstill, you need a low gear. The chain is then wrapped around the smallest sprocket at the front and the largest at the back. If you want to drive faster, choose a higher gear.<\/p>\n
The CVT automatic transmission actually does the same, only automatically and completely stepless. The metal push belt does not run over gears, but through two pulleys \u2013 the groove in its circumference becomes deeper towards the middle. The front pulley (the primary) is driven by the motor, the rear (the secondary) drives the wheels. Both pulleys can vary infinitely in diameter because their halves move apart and towards each other. When the front pulley is fully open, the rear is fully closed. The push belt then makes a small bend in front of it and a large one behind it, just like the racing bicycle chain. Ideal for starting from a standstill.<\/p>\n
Shifting with CVT automatic transmission<\/strong><\/h2>\nThe engine makes relatively high revs when starting, as if the clutch is slipping, but the car accelerates smoothly. As the speed increases, the primary pulley closes further and further thanks to ingenious technology and the push belt makes a larger bend. The opposite happens with the secondary: the belt pushes it further open and the bend made by the push belt becomes smaller. This makes the transmission longer (‘higher gear’) and the car achieves a higher speed without increasing the engine speed and without interrupting acceleration due to the driver having to change gears.<\/p>\n
Under the influence of, among other things, the position of the accelerator pedal, the load on the engine and the speed, a computer controls the diameter of the primary pulley and thus the transmission ratio (the ‘gear’). All this takes place completely steplessly and comfortably, both accelerating and upshifting as well as decelerating and downshifting again.<\/p>\n
CVT automatic also with stairs<\/strong><\/h2>\nStill, some people don’t like the fact that the speed is constant while the driving speed varies. They then have the idea that the clutch is slipping. Partly for this reason, some car manufacturers have launched models with a CVT that does have a number of (electronically controlled) stages, which can even be selected manually. Of course the customer is king and of course the stairs can come in handy when towing a trailer, but doesn’t the ingenious continuously variable transmission miss the mark?<\/p>\n
Push belts for CVT automatic transmission<\/strong><\/h2>\nThere are various manufacturers of continuously variable transmissions, but the essential push belts are produced in Tilburg by VDT (Van Doornes Transmissie, yes the Van Doorne from DAF<\/a> , but now VDT is owned by Bosch). The push belts are made up of two parallel packages of steel belts, between which and over which numerous metal plates run. These plates push each other forward and transfer the driving force from the primary to the secondary pulley. Due to the shape of the plates, they can pivot relative to each other so that the push belt runs smoothly through the pulleys of ever varying diameter.<\/p>\nCar brands with CVT automatic transmission<\/strong><\/h2>\nIn the eighties, the Subaru Justy and the Fiat Uno with a CVT were the first to appear on the market. More followed later, such as Dodge, Ford, Rover, MINI (BMW), Suzuki and many others, mainly Japanese, Korean and American brands.<\/p>\n
Williams Formula 1 with CVT automatic transmission<\/strong><\/h2>\nEven the Williams Formula 1 team, which was very successful at the time, equipped its FW15C with a CVT in 1993. The car was already so unheard of fast in development testing that Formula 1 leadership banned the use of the CVT. Because the CVT continuously kept the engine at the speed at which it was delivering its maximum power, the Williams was about four seconds per lap faster than the competition\u2026 The ban also delayed the development of the CVT for use in normal passenger cars.<\/p>\n<\/figure>\nVariomatic predecessor of CVT automatic transmission<\/strong><\/h2>\n
Still, some people don’t like the fact that the speed is constant while the driving speed varies. They then have the idea that the clutch is slipping. Partly for this reason, some car manufacturers have launched models with a CVT that does have a number of (electronically controlled) stages, which can even be selected manually. Of course the customer is king and of course the stairs can come in handy when towing a trailer, but doesn’t the ingenious continuously variable transmission miss the mark?<\/p>\n
Push belts for CVT automatic transmission<\/strong><\/h2>\nThere are various manufacturers of continuously variable transmissions, but the essential push belts are produced in Tilburg by VDT (Van Doornes Transmissie, yes the Van Doorne from DAF<\/a> , but now VDT is owned by Bosch). The push belts are made up of two parallel packages of steel belts, between which and over which numerous metal plates run. These plates push each other forward and transfer the driving force from the primary to the secondary pulley. Due to the shape of the plates, they can pivot relative to each other so that the push belt runs smoothly through the pulleys of ever varying diameter.<\/p>\nCar brands with CVT automatic transmission<\/strong><\/h2>\nIn the eighties, the Subaru Justy and the Fiat Uno with a CVT were the first to appear on the market. More followed later, such as Dodge, Ford, Rover, MINI (BMW), Suzuki and many others, mainly Japanese, Korean and American brands.<\/p>\n
Williams Formula 1 with CVT automatic transmission<\/strong><\/h2>\nEven the Williams Formula 1 team, which was very successful at the time, equipped its FW15C with a CVT in 1993. The car was already so unheard of fast in development testing that Formula 1 leadership banned the use of the CVT. Because the CVT continuously kept the engine at the speed at which it was delivering its maximum power, the Williams was about four seconds per lap faster than the competition\u2026 The ban also delayed the development of the CVT for use in normal passenger cars.<\/p>\n<\/figure>\nVariomatic predecessor of CVT automatic transmission<\/strong><\/h2>\n
Car brands with CVT automatic transmission<\/strong><\/h2>\nIn the eighties, the Subaru Justy and the Fiat Uno with a CVT were the first to appear on the market. More followed later, such as Dodge, Ford, Rover, MINI (BMW), Suzuki and many others, mainly Japanese, Korean and American brands.<\/p>\n
Williams Formula 1 with CVT automatic transmission<\/strong><\/h2>\nEven the Williams Formula 1 team, which was very successful at the time, equipped its FW15C with a CVT in 1993. The car was already so unheard of fast in development testing that Formula 1 leadership banned the use of the CVT. Because the CVT continuously kept the engine at the speed at which it was delivering its maximum power, the Williams was about four seconds per lap faster than the competition\u2026 The ban also delayed the development of the CVT for use in normal passenger cars.<\/p>\n<\/figure>\nVariomatic predecessor of CVT automatic transmission<\/strong><\/h2>\n
Even the Williams Formula 1 team, which was very successful at the time, equipped its FW15C with a CVT in 1993. The car was already so unheard of fast in development testing that Formula 1 leadership banned the use of the CVT. Because the CVT continuously kept the engine at the speed at which it was delivering its maximum power, the Williams was about four seconds per lap faster than the competition\u2026 The ban also delayed the development of the CVT for use in normal passenger cars.<\/p>\n<\/figure>\nVariomatic predecessor of CVT automatic transmission<\/strong><\/h2>\n
![\"\"](\"https:\/\/autorai.nl\/wp-content\/uploads\/2019\/12\/DAF-Museum-AutoRAI.nl-Fotoreportage-december-2019-Foto-116.jpg\")
<\/figure>\n![\"\"](\"https:\/\/autorai.nl\/wp-content\/uploads\/2019\/12\/DAF-Museum-AutoRAI.nl-Fotoreportage-december-2019-Foto-108.jpg\")
<\/figure>\n![\"\"](\"https:\/\/autorai.nl\/wp-content\/uploads\/2019\/12\/DAF-Museum-AutoRAI.nl-Fotoreportage-december-2019-Foto-89-1140x855.jpg\")
<\/figure>\n![\"\"](\"https:\/\/autorai.nl\/wp-content\/uploads\/2019\/12\/DAF-Museum-AutoRAI.nl-Fotoreportage-december-2019-Foto-107.jpg\")
<\/figure>\n![\"\"](\"https:\/\/autorai.nl\/wp-content\/uploads\/2019\/12\/DAF-Museum-AutoRAI.nl-Fotoreportage-december-2019-Foto-113.jpg\")
<\/figure>\n![\"\"](\"https:\/\/autorai.nl\/wp-content\/uploads\/2019\/12\/DAF-Museum-AutoRAI.nl-Fotoreportage-december-2019-Foto-103.jpg\")
<\/figure>\n![\"\"](\"https:\/\/autorai.nl\/wp-content\/uploads\/2019\/12\/DAF-Museum-AutoRAI.nl-Fotoreportage-december-2019-Foto-75.jpg\")
<\/figure>\n<\/figure>\n","protected":false},"excerpt":{"rendered":"Continuously variable transmission The continuously variable transmission as used in the car world is a development of the Dutchman Hub…","protected":false},"author":0,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[93,76],"tags":[],"class_list":["post-119216","post","type-post","status-publish","format-standard","hentry","category-car-news","category-uncategorized"],"acf":[],"yoast_head":"\n