Motivation still comes from Mazda's spritely (MZR S - VT) 2.0 - litre twin
cam engine which manages 118kW @ 6700rpm and 188Nm @ 5000rpm.
Not exact matches
Another promising technology is a camless
engine,
which opens and closes its valves by computer signals instead of connecting them mechanically, via
cams and camshafts, to the crankshaft.
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Two examples of this
which are slightly different being the original Lampredi Fiat / Lancia Twin
Cam (8v)
engine which ran twin
cams but only single inlet and exhaust valves per cylinder and the other being the Mk2 / Mk3 Golf GTI 16v
engine, a DOHC design
which featured two inlet and two exhaust valves per cylinder.
The CSL retained the single - overhead -
cam, carbureted M30
engine,
which would prove to be one of BMW's most enduring straight - six motors.
OHV
which means Over Head Valve (the
cam is usually in the block, below the valves and acts upon the valves with pushrods and rocker arms) An example of this being the Austin Morris A-series
engine as found in the original Mini.
The
cam has a «bump» or «hump» in it
which actuates the valves
which allows air into and exhaust out of the cylinder of the
engine at the correct time so the
engine will run correctly.
Advance to the Rear — French Style Much lest resistant to new technological ideas than their neighbours across the Channel the French came up with some highly imaginative proposals in the 1930s as Karl Ludvigsen relates / Vauxhall Velox & Wyvern — Buyer's Guide / Royal Restoration — Michael Ware looks back at the restoration of a Royal Daimler that was carried out for the Queen's Silver Jubilee / Commercially Speaking — Lighter Commercials / Dashboard Instruments — Part Two — Workshop / Cammy Sammy - Salmson Twin
Cam / Classic Commemoration — Richard Cass reports on the Le Mans Classic / Singer Super Six — Michael Worthington - Williams recalls a Singer «buult like a battleship graceful as a yacht» / Coventry Cat — Fitted with the first
engine entirely designed by Jaguar the XK 120 set the standard by
which so many postwar sports cars are judged.
Valve float is an adverse condition
which can occur at high
engine speeds when the poppet valves in an internal combustion
engine valvetrain do not properly follow the closure phase of the
cam lobe profile.
I upgraded the
engine with a solid lifter
cam, aluminum hi - rise intake, holley carb, Doug's Headers, and a Borg - Warner T - 10 4 - speed trans with a Hurst shifter
which rewarded me with several drag racing winner's trophies.
The
engine has been developed by Lamborghini to produce 641bhp and 627 lb ft of torque, thanks to new turbos,
cams and cylinder heads amongst other items,
which is enough to blast the 2.2 - ton Urus to 62mph from rest in just 3.6 seconds.
The original 2.0 - liter four - cylinder
engine has been destroked to just 1.8 - liters, increasing its redline —
which now redlines at «Snow» in the Drive Mode selector housed in the car's tachometer — a billet tungsten crankshaft, titanium valves, beryllium seats, and asymmetric billet
cams.
If you put harley - like
cam profiles in a ducati, it would behave like a harley (setting aside the oddly spaced v - configuration of the
engine,
which would prevent it from sounding remotely similar).
Most of the extra straight line performance over a standard 12C (
which hits 60mph in 3.1 sec) comes from the reworked
engine,
which has new pistons, cylinder heads and exhaust valves and revised
cam timing.
SOHC V6 and V8
engines,
which are designed with cylinders in two banks, have a total of two
cams, one for each cylinder head.
Specification: The 6.3 Litre
Engine Offered A Massive 500BHP From Build,
Which Would Give A Crushing Top Speed Of 175 MPH And This Was Achieved By Increasing The Bore & Stroke, A Revised Fuel Injection System, Special Cosworth Pistons With Higher Lift
Cam Shafts And A New Crank Shaft.
The switching operation between the two
cam lobes is controlled by the ECU
which takes account of
engine oil pressure,
engine temperature, vehicle speed,
engine speed and throttle position.
The switch - down back from high to low RPM
cams is set to occur at a lower
engine speed than the switch - up (representing a hysteresis cycle) to avoid a situation in
which the
engine is asked to operate continuously at or around the switch - over point.
The standard
engine for the new Jetta GLX is a 12 - valve, double - overhead
cam, water - cooled 2.8 - liter V - 6 (
which VW calls the VR6) rated at 172 horsepower.
5.0 liter TI - VCT with independent variable
cam timing and high pressure direct injection
which develops 395 hp and 400 lb - ft of torque; this
engine can be converted to natural gas or propane fuel
Its 2 - liter, double - overhead -
cam, four - cylinder
engine (
which produces 115 horsepower) still has the traditional chest - thumping, guttural growl.
TI - VCT varies the phase of the intake and exhaust
cams independently for improved airflow through the
engine,
which delivers more torque while reducing average fuel consumption by up to 5 percent.
During the 1950s and into the mid 1960s, the motorsports mantle was carried in large part by the lovely dual overhead
cam four cylinder
engine,
which powered a variety of illustrious racers ranging from the Giulietta Sprint Lightweight to the TZ2.
Here's the new Ford Expedition, a full - size sport - utility vehicle that is headed for showrooms this fall.Ford plans to offer the nine - passenger Expedition with a standard 215 - horsepower overhead
cam V - 8
engine; an optional 5.4 - liter V - 8 powerplant is rated at 230 horsepower.The Expedition will be pitted against the full - size Chevrolet Tahoe, GMC Yukon and Chevrolet / GMC Suburban,
which for years has had no competition.Ford says the Expedition will offer best - in - class highway fuel economy and towing capacity.
In fact, I think the 3.4 - liter
engine,
which GM calls the «Twin Dual
Cam,» has never been given its due.
For maximum power, the solenoid valve is always closed and full valve opening is achieved following completely the mechanical
cam,
which was specifically designed to maximize power at high
engine speed (long opening time).
TI - VCT varies the phase of the intake and exhaust
cams independently for improved airflow through the
engine,
which delivers more torque while reducing average fuel consumption by up to 5 %.
The 2.0 - liter turbo
engine from the Opel GT produces an impressive power output per liter of 132 hp and features «
Cam - Phase» — variable camshaft phasing — ,
which together with other measures reduce consumption by an extra three percent.
In the case of the Mustang, the SVT people start with the GT version,
which comes with a less potent, 225 horsepower, single overhead
cam, 16 - valve
engine.
The 480737 code
cam (identical grind to the RAIV «041»
cam) was originally specified for the SD455
engine and was fitted into the «pre-production» test cars (source: former Pontiac special projects engineer McCully), one of
which was tested by both Hot Rod and Car and Driver magazines.
[citation needed] The ZF «sliding pins and
cams» became available, [1] and one example was the Type B - 70 used during the Second World War in the military VWs (Kübelwagen and Schwimmwagen), although technically this was not a limited - slip differential, but a system composed of two freewheels,
which sent the whole of the
engine power to the slowest - turning of the two wheels.
In roadgoing trim, the 190 E 2.3 - 16 produced 49 hp (36 kW) and 41 ft • lbf (55 N • m) of torque more than the basic single overhead
cam 2.3 straight - 4
engine on
which it was based offering 185 hp (138 kW) at 6,200 rpm (59.2 kW / liter) and 174 lb ⋅ ft (236 N ⋅ m) at 4,500 rpm.
Multi-valve
engines tend to have smaller valves that have lower reciprocating mass,
which can reduce wear on each
cam lobe, and allow more power from higher RPM without the danger of valve bounce.
The problem with
cam gear,
which leads to the loss of pressure of
engine oil.
The GT trim level included an
engine upgrade to the LD9 2.4 - liter Twin
Cam four - cylinder,
which was good for 150hp and 155 - lb.
VTEC
engines have an extra intake
cam with its own rocker,
which follows this
cam.
Lotus Engineering designed its LT5
engine that featured four valves driven by four
cams per cylinder that boasted of 375 horsepower,
which was pumped up to 405 horsepower later in the run.
Equipped with dual overhead
cams, the
engine also features continuously variable valve timing,
which greatly broadens the power band compared with
engines with conventional fixed - gear valve trains.
Horsepower ratings are the same as last year, 100 horsepower for the SL and SL1,
which come with a 1.9 - liter single overhead
cam engine, and 124 - horsepower for the 1.9 - liter, double overhead
cam 16 - valve four cylinder.
If you haven't seen the new Cougar, brace yourself.This ain't your father's Mercury.Gone is the boxy styling and pillow - soft ride that defined the Cougar for the past 15 years.The 1999 Cougar is a raging sports coupe with a lot of power and a performance - oriented suspension system.And it won't turn many 60 - year - old heads -
which is just fine with the folks who are steering the upscale Ford brand in a new direction.PERFORMANCE, HANDLINGMercury offers the Cougar with either a 2.0 - liter, 16 - valve, overhead
cam, four - cylinder
engine rated at 125 - horsepower or a 170 - horsepower, 2.5 - liter V - 6,
which boosts the price an additional $ 800.
Its gross vehicle weight of just 2100 - pounds (
which stands to be supplemented with the presence of two side airbags, two knee airbags, and other mandated equipment for U.S. - bound models) is easily inspired by the mid-mounted dual - overhead
cam 1.7 - liter turbocharged four - cylinder
engine that manages to produce 237 - hp and 258 lb. - ft.
(Undoubtedly thanks to the
engine's variable valve timing,
which controls the intake
cams and their massive 14 millimeters of lift.)
The ES300h trades the 3.5 - liter twin -
cam V6 for a 2.5 - liter Atkinson cycle inline four - cylinder
engine mated to Lexus Hybrid Drive,
which uses a high - output permanent magnet electric motor to bring total system horsepower to 200.
High pressure direct injection, low - inertia turbocharging and Twin - independent Variable
Cam Timing (Ti - VCT) all help to create an advanced combustion system
which brings new levels of performance and fuel efficiency to Ford's petrol
engines.
The LGZ is based on GM's 3.6 L V - 6 LGX
engine,
which launched GM's second - generation double - overhead -
cam engine architecture, but is tuned for truck use.
We tested a 1999 SC2 coupe,
which remains powered by a 1.9 - liter, double overhead
cam, inline four - cylinder
engine.
The petrol
engines are configured using a Continuous Variable
Cam Phaser,
which smartly adjusts valve timings and intervals for power delivery.
The 1.6 - liter
engine,
which makes 115 horsepower, is outfitted with two overhead
cams, 16 valves and electronic fuel injection.
The
engine was a 2.0 - litre naturally aspirated Twin -
Cam straight - 6,
which made 160bhp of peak power and 177Nm of torque.
It comes with a peppy overhead
cam, four - cylinder
engine and four - speed automatic transmission, both of
which are designed to require very low maintenance.