IVC

(redirected from Intake Valve Closing)
AcronymDefinition
IVCIrvine Valley College (California)
IVCInferior Vena Cava
IVCIndus Valley Civilization (Bronze Age)
IVCImperial Valley College
IVCIntravenous Vitamin C
IVCIntravenous Cannula (obstetrics)
IVCInternational Vocal Competition (Netherlands)
IVCIntake Valve Closing (engines)
IVCInternet Video Camera
IVCInteractive Video Classes
IVCInternational Video Corporation
IVCInternet Voice Connector
IVCInteractive Video Conferencing
IVCIntegrated Video Controller
IVCIndennità di Vacanza Contrattuale (Italian: Contractual Holiday Allowance)
IVCInteractive Videoconferencing
IVCIllinois Vehicle Code (law)
IVCIslamic Vacation Course
IVCIllinois Virtual Campus
IVCInternational Venture Capital
IVCInter-Vehicle Communications
IVCIgnatian Volunteer Corps (Baltimore, Maryland)
IVCInternational Vacation Club (Dominican Republic)
IVCIntervehicular Communication
IVCInspiratory Vital Capacity
IVCInner Vacuum Chamber
IVCInterfaith Volunteer Caregivers (of Greater Bridgeport)
IVCInter-Varsity Club (UK; est. 1947)
IVCInstallation Volunteer Coordinator
IVCInternational Viola Congress (music)
IVCInternet Video Company (various locations)
IVCInland Valley Consortium (aka Consortium for Sustainable Use of Inland Valleys)
IVCIntegrated Visual Computing
IVCIntravenous Cholangiography
IVCInteractive Video Classroom (various schools)
IVCIntermediate Velocity Cloud
IVCIntermediate Velocity Cloud (galactic cloud composed of atomic hydrogen travelling at low velocities)
IVCInvoluntary Commitment
IVCInternet Voice Chat
IVCChief Investigator (USCG Rating)
IVCIntraventricular Catheter
IVCIn-Vision Continuity
IVCInternet Video Communication
IVCIdentity Verification Certificate
IVCinternal value creation
IVCIndirect Vector Control
IVCInteractive Voice Communication
IVCInstallation Volunteer Council
IVCIndividual Vehicle Controller
IVCIntegral of Viable Cell
IVCImmediately Vital Cargo
IVCIn-Vessel Component
IVCIncoming-switched Virtual Circuit (Nortel)
IVCInternal Venture Company
IVCInterexchange Virtual Circuit
IVCIntravascular Free-Floating Tumor Cluster
References in periodicals archive ?
et al., "A Comparative Study on Influence of EIVC and LIVC on Fuel Economy of a TGDI Engine Part II: Influences of Intake Event and Intake Valve Closing Timing on the Cylinder Charge Motion," SAE Technical Paper 2017-01-2246,2017, doi:10.4271/2017-01-2246.
The latter is activated on intake: it allows optimal torque generation at all speeds and reduced pumping losses during intake valve closing. The engine is mated to an electronically controlled, direct-shift, eight-speed automatic transmission.
Thermodynamic conditions during the closed cycle (compression, combustion, and expansion) can be directly controlled by adjusting the intake valve opening (IVO) and intake valve closing (IVC) angle, which defines the total intake mass flow rate and the effective compression ratio of the engine [3].
Together with a variable intake system, the correct intake valve closing point can lead to significant increases in full-load torque in addition to the part-load improvements, Lotus said.
A promising technology for the improvement of engine efficiency and the reduction of pollutant emissions are Miller cycles, which utilize intake valve lift curves that are characterized by valve closing significantly before bottom dead center (early intake valve closing - EIVC) or thereafter (late intake valve closing - LIVC).
The basic hybrid recipe is relatively simple: (1) take a four-cylinder gasoline engine, (2) modify it to use the Atkinson cycle (i.e., flowing a small amount of the unburned air-fuel mixture back into the intake manifold through late intake valve closing, decreasing combustion volume, and effectively increasing the engine's expansion ratio), (3) add an electric motor and batteries, and (4) use a CVT to get the power to the wheels.
For the V6 offering in the vehicles, Ford has adopted the 3-liter V6 engine used in the Escape crossover, which features a new cylinder head and upper and lower intake designs, along with modified pistons and new late intake valve closing cam profiles, all of which contribute significantly to the engine's 19 hp improvement versus the outgoing engine.
In the experiments, a VVT device, which is capable of achieving late intake valve closing, was used to adjust the effective compression ratio.
It is well understood that load may be controlled through timing of the intake valve closing event.
Nevertheless, the valve flow restrictions increased the over-expansion pumping loop work at some extent during the intake valve closing phase (delimited by the purple perimeter in Figure 5).
The turbulent kinetic energy results from the 0D model for the changed lift profile (Figure 18 (b) & (d)) predict higher levels of turbulence compared to CFD near the intake valve closing. This is due to an abrupt increase in velocity that occurs over a short period of time when the valve closes.
Test engine specification Exhaust Valve 28 mm Intake Valve Diameter 33.4 mm Diameter Total Engine 1.998 Liters Maximum Exhaust 8.64 mm Displacement Valve Lift Bore 86 mm Maximum Intake Valve 12.5 mm Lift Stoke 86 mm Intake Valve Opening 687 [degrees]CA (1VO) Connecting 144 mm Exhaust Valve Opening 491 [degrees]CA Rod (EVO) Compression 18.2:1 Intake Valve Closing 217 [degrees]CA Ratio (IVC) Valves per 4 Exhaust Valve Closing 10 [degrees]CA Cylinder (EVC) Table 2.