Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
  • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
  • F02M35/02—Air cleaners
  • F02M35/08—Air cleaners with means for removing dust, particles or liquids from cleaners; with means for indicating clogging; with by-pass means; Regeneration of cleaners
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
  • F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
  • F02B39/16—Other safety measures for, or other control of, pumps

Definitions

• the invention relates to an intake tract of a vehicle internal combustion engine with at least one turbocharger, upstream of which an air filter is arranged.
• a vehicle internal combustion engine with at least one turbocharger, upstream of which an air filter is arranged.
• the object of the invention is therefore to demonstrate measures to prevent the problems mentioned.
• the solution to this problem is characterized by a bypass to the air filter which is opened depending on the suction pressure downstream of the air filter.
• Advantageous training and further training are included in the subclaims.
• a bypass is provided at least to the air filter element.
• This bypass can also extend over a longer distance, i. H. additionally bypass the intake silencer.
• this bypass must usually be closed to ensure that only a filtered intake air flow can get into the turbocharger and then into the internal combustion engine.
• This bypass must only be opened in the critical cases described at the beginning, in which, for example, a blockage of the air filter downstream and upstream of the turbocharger results in a relatively high negative pressure, and in which the turbocharger could be damaged by reaching its surge limit. This then reduces the vacuum, d. H. the turbocharger can draw in a sufficient amount of air, compress it and then feed it to the internal combustion engine.
• a separate air filter element can be provided in the bypass, which of course can be dimensioned significantly smaller than the air filter that is normally flowed through.
• a spring-loaded locking flap can be provided in the bypass, the spring element — depending on the arrangement, being a tension spring or a compression spring - With regard to its spring force is designed so that this shut-off valve opens the bypass upstream of the turbocharger when the vacuum in the intake tract is too high.
• the shut-off valve in the bypass can also be actuated by any actuator. If this actuator is activated pneumatically, the vacuum in the intake tract can be used for actuation at the same time. In this case, there is an automatic system, i.e.
• the actuator is actuated with the help of this negative pressure, whereby the shut-off valve in the bypass is opened and the turbocharger is sufficient via this bypass Can suck in fresh air.
• electropneumatic actuation is also possible, for which purpose in the intake tract in the area to be monitored, i.e. downstream of the air filter element and upstream of the Turbocharger a pressure sensor can be provided.
• bypass can also be closed by a membrane having a predetermined breaking point.
• membrane is intended to include any design of a barrier wall or the like which has a predetermined breaking point, ie which releases the flow path through the bypass in the event of inadmissibly high negative pressure values.
• a bypass to an air filter in the intake tract of a vehicle internal combustion engine with a turbocharger can be opened as a function of the intake pressure - in the event of inadmissibly high vacuum values downstream of the air filter.

Landscapes

• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Supercharger (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=7784697

Family Applications (1)

Country Status (2)

Cited By (4)

Families Citing this family (1)

Citations (3)

Family Cites Families (5)

• 1996
  • 1996-02-07 DE DE1996104344 patent/DE19604344A1/de not_active Withdrawn
  • 1996-12-12 EP EP96119922A patent/EP0791747A3/fr not_active Withdrawn

Patent Citations (3)

Also Published As

Similar Documents

Legal Events