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Toyota Variable Induction System, or T-VIS, is a variable intake system designed by Toyota to improve the low-end performance of multi-valve engines. T-VIS is intended to improve the low-end torque of high-performance, four-stroke internal combustion engines - by changing the geometry of the intake manifold according to the engine rotation speed. The system uses two separate intake runners per cylinder, one being equipped with a butterfly valve that can either open or close the runner. All valves are attached to a common shaft which is rotated by a vacuum actuator outside the manifold. T-VIS does not actually keep one of the intake valves from opening or seal off the port for one valve.

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  • T-VIS (ja)
  • T-VIS (nl)
  • T-VIS (ru)
  • T-VIS (en)
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  • T-VISはToyota Variable Induction Systemの略でトヨタ自動車が1982年より採用した可変吸気システムの名称。 (ja)
  • Het T-VIS (Toyota Variabel Inductie Systeem) is een systeem bestaande uit een rij van 4 vlinderkleppen die in het inlaatspruitstuk zijn gemonteerd en die bij een toerental van rond de 4400 RPM openen om meer werveling te bewerkstelligen in de verbrandingsruimte. (nl)
  • Toyota Variable Induction System, or T-VIS, is a variable intake system designed by Toyota to improve the low-end performance of multi-valve engines. T-VIS is intended to improve the low-end torque of high-performance, four-stroke internal combustion engines - by changing the geometry of the intake manifold according to the engine rotation speed. The system uses two separate intake runners per cylinder, one being equipped with a butterfly valve that can either open or close the runner. All valves are attached to a common shaft which is rotated by a vacuum actuator outside the manifold. T-VIS does not actually keep one of the intake valves from opening or seal off the port for one valve. (en)
  • T-VIS (англ. Toyota Variable Induction System) — система изменения геометрии впускного коллектора, разработанная компанией Toyota. Устанавливалась на некоторые многоклапанные (более 2 на цилиндр) двигатели для улучшения качества наполнения цилиндров воздухом. Цель работы системы — обеспечение высокоскоростного потока воздуха малых объёмов на низких оборотах двигателя, а также низкоскоростного потока воздуха большого объёма на средних и высоких оборотах, что приводит к увеличению крутящего момента. (ru)
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  • Toyota Variable Induction System, or T-VIS, is a variable intake system designed by Toyota to improve the low-end performance of multi-valve engines. T-VIS is intended to improve the low-end torque of high-performance, four-stroke internal combustion engines - by changing the geometry of the intake manifold according to the engine rotation speed. The system uses two separate intake runners per cylinder, one being equipped with a butterfly valve that can either open or close the runner. All valves are attached to a common shaft which is rotated by a vacuum actuator outside the manifold. T-VIS does not actually keep one of the intake valves from opening or seal off the port for one valve. The engine control unit (ECU) allows vacuum into the actuator by powering a solenoid valve when the engine rotation speed is low. At higher engine speeds (e.g. 4,200 rpm), vacuum is cut off and a spring inside the actuator causes the butterfly valve to fully open. The idea behind the system is that in the lower engine speed band, the speed of the intake air will be increased because the intake runner cross section per cylinder is smaller. However, when engine speed increases, the second runner is opened, decreasing airflow speed, but increasing the airflow volume, better matching the engine's airflow needs at higher revolutions and improving top end power. With modified engines it may be desirable to have the T-VIS open earlier than stock, because modifications that improve an engine's power output may do so by increasing airflow per engine revolution, resulting in a high airflow at a lower rpm. In addition to providing more air at higher engine speeds, the system also creates a swirl in the combustion chamber at lower rpms. The swirl makes for more efficient combustion, and is due to the asymmetric nature of the airflow with one intake runner closed. Applications: * 1982.08-1990 1G-GEU/1G-GE * 1983-1989 4A-GE * 1986-1989 3S-GE (Both Rev 1 and Rev 2 of the 1st Generation 3S-GE) * 1986-1993/95 3S-GTE (through 1995 in US market, 1993 everywhere else; 1st & 2nd generation motors only) (en)
  • T-VISはToyota Variable Induction Systemの略でトヨタ自動車が1982年より採用した可変吸気システムの名称。 (ja)
  • Het T-VIS (Toyota Variabel Inductie Systeem) is een systeem bestaande uit een rij van 4 vlinderkleppen die in het inlaatspruitstuk zijn gemonteerd en die bij een toerental van rond de 4400 RPM openen om meer werveling te bewerkstelligen in de verbrandingsruimte. (nl)
  • T-VIS (англ. Toyota Variable Induction System) — система изменения геометрии впускного коллектора, разработанная компанией Toyota. Устанавливалась на некоторые многоклапанные (более 2 на цилиндр) двигатели для улучшения качества наполнения цилиндров воздухом. Цель работы системы — обеспечение высокоскоростного потока воздуха малых объёмов на низких оборотах двигателя, а также низкоскоростного потока воздуха большого объёма на средних и высоких оборотах, что приводит к увеличению крутящего момента. Система представляет собой блок воздушных заслонок между впускным коллектором и головкой блока цилиндров, имеющий по два проходных канала для каждого из цилиндров. В одном из двух каналов для каждого цилиндра установлена заслонка. Все заслонки соединены валом, приводимым в движение вакуумным приводом (мембраной), что приводит к открытию либо закрытию ряда заслонок. (ru)
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