Sentences with phrase «intake valve»

Actually, «throttle» isn't precisely correct when referring to this engine; BMW notes that this is the first M engine to use its Valvetronic system, individually controlling each intake valve and doing away with a conventional throttle body.

The possibility of a slight loss of fuel economy is due to the fact that in this change, the engine will no longer have Intake Valve Lift control as part of the VVT.

The VVEL system helps optimize intake valve open / close movements, allowing the needed air to be sent promptly to the combustion chamber at the precisely optimized time.

The valve and camshaft timing work in tandem to seamlessly control intake valve lift.

Adopting a laser clad valve seat for the intake valve seat to make the intake port compatible with strong tumble flow (fuel consumption performance) and intake flow rate (output performance).

The patented BMW VALVETRONIC technology steplessly adjusts intake valve timing, rendering the throttle valve of earlier engines obsolete.

By keeping an intake valve open during part of the compression stroke, some of the volume of unburned air / fuel mixture in the cylinder moves back inside the intake manifold and lowers the volume being compressed, or «pumped.»

NOTE: If replacing Ford Performance or production 429 Cobra Jet heads, new intake valve notches are required

As rpm increases, the intake camshaft is advanced, opening the intake valve sooner and providing additional valve overlap.

The CR - Z engine used is based on the 1.5 - litre Jazz unit with changes to the valve timing allowing for one intake valve to be deactivated at low engine speeds.

Pumping losses are lowered when the variable valve timing allows an intake valve to remain open for a brief time period as the piston begins its compression stroke.

In addition, to change the valve timing between the two in - line cylinders with one camshaft, the specifications provide for a cam with two timing routines for the intake valve.

In contrast to the previous engine, the cylinder head has a «rotated valve star» layout; each of the two camshafts actuates one intake valve and one exhaust valve per cylinder.

Another thing we like about the Nitrochargers is their eccentric sliding intake valve arrangement, which greatly improves rebound response time while also reducing operating noise.

Sorry, SJC, the 2016 Volt will have a 4 - cylinder 1.5 - litre engine, but capable of running Atkinson cycle with variable intake valve timing, with 12.5 compression ratio.

At low rpm, the VTEC intake valve timing and lift are optimized for rapid swirl - pattern cylinder filling.

Seamlessly variable control of intake valve lift dispenses with the need for a throttle butterfly.

Power rockets up from 101 hp stock to 160 hp in Abarth trim, and torque grows from 98 lb - ft to 170 lb - ft thanks to a tiny turbocharger, twin intercoolers and Fiat's simple - but - effective MultiAir intake camshaft - management system that hydraulically varies intake valve lift and duration to broaden and flatten power and torque curves.

Port injection delivers the fuel and variable intake valve timing tires to make the most of the premium fuel.

The 6G73 is a 24 - valve SOHC design with two valves running off a single cam lobe on the exhaust valves using a forked rocker arm and each intake valve actuated with two cam lobes, with a smaller bore than the 3.0 liter version of the same block.

The Atkinson cycle itself reduces the pumping loss through its late intake valve closing time, while enhancing fuel savings by increasing the expansion ratio relatively.

throttleless operation, using valve - head load control can be achieved by either early or late intake valve closing.

Closing the valve 20 degrees later is good, but it would be better to be able to increase the duration that the intake valve is open.

An electrohydraulic valvetrain, ``... enables fully variable control of intake valve lift for optimum combustion efficiency, power and torque throughout the engine's operating range,» according to Jaguar.

In addition to this, a Valvematic system controlling intake valve elevation appeared.

For starters, engineers adapted the V8 to operate with late intake valve closing (Atkinson - cycle combustion process) for fuel economy gains.

The intake valve diameter was 30 mm, exhaust valves diameter was 27 mm, valve stem diameter was 6.5 mm.

Furthermore, control intake valve duration for improved performance.

«Intake Valve Lift Control works so seamlessly drivers aren't likely to notice it at all,» according to Mike Anderson, GM global chief engineer for Ecotec engines.

Throttle-less operation in gasoline engines - Control intake valve lift, remove the throttle and improve part - load fuel economy from reduced pumping losses.

Intake valve closing concepts

By reducing valve opening at low speeds and loads, Intake Valve Lift Control helps reduce power wasted internally, thus improving fuel efficiency.

The engine control system uses the engine oil pressure to control the variable intake valve timing on this model.

Intake valve diameter: 2.320 inches Exhaust valve diameter: 1.940 inches Intake manifold: Edelbrock Dual Quad Street Hemi single - plane Carburetors: dual Edelbrock 800cfm AVS Ignition: MSD Pro Billet distributor, Moroso Blue Max wires Header: 2 1/8 — 2 1/4 — 2 3/8 step vs TTi 2 1/4 inch Oil Pan: Moroso 7 - quart Fuel: pump 93 unleaded Oil: Driven BR30

Some engines are designed to open each intake valve at a slightly different time, which increases turbulence, improving the mixing of air and fuel at low engine speeds.

That allows engineers to vary the valve timing in this dual - cycle engine, keeping the intake valve open longer when an Atkinson cycle is desirable, or closing it sooner for an Otto effect.

The N73 engine also featured BMW's «Valvetronic» system, which varied intake valve opening lift between 0.3 mm and 9.85 mm, according to engine speed and load.

P0028 trouble code definition Intake Valve Control Solenoid Circuit Range / Performance (Bank 2) What the P0028 code means P0028 is the OBD - II generic code indicating the engine control module (ECM) has...

They also incorporate engine start - stop technology, cylinder - deactivation, 2 - stage oil pumps, and updated variable valve timing featuring intermediate park technology for late - intake valve closure.

Acceleration is smooth and responsive thanks to the twin scroll turbocharger and continuously variable intake valve timing.

Typically a modern gasoline engine injects fuel into the intake manifold upstream of the intake valve.

A way to look at Variable Valve Actuation (VVA) is to picture the intake valve closed early or left open late enough to «expel back» enough of the incoming air to reduce power.

Variable valve timing, which uses hydraulic pressure on the camshaft pulley to change the point in the engine cycle when the intake valve opens and closes.

Low - rpm torque is improved by up to 15 % through early intake valve closing strategies that maximize the air mass trapped in the cylinders;

Thus instead of throttling and creating a vacuum above the downward moving piston (when reduced power is required) you just let the engine breath easy but reject some of the intake air by early or late intake valve closing.

The valve train includes chain - drive dual overhead camshafts for minimal maintenance, four valves - per - cylinder with direct acting bucket - type actuators and variable intake valve timing.

Deactivate one intake valve, switch the other to a low lift / short duration profile to generate increased turbulence.

For low - rpm torque, the solenoid valve is opened near the end of the cam profile, leading to early intake valve closing.

The punchy four - cylinder now features intake valve lift control or iVLC, direct injection and other fuel - saving technologies working in conjunction with a stop / start system to return 25 mpg in the city and 36 mpg on the highway.

Through solenoid valve opening and closing time control, a wide range of optimum intake valve opening schedules can be easily obtained.