Below are the 4 most recent journal entries recorded in sylvesterkel820's InsaneJournal:

Tuesday, October 4th, 2011
10:02 pm	rotary 13b engine rotary 13b engine Hailed by a lot of as the most beautiful auto ever before to arrive out of Japan, The Mazda RX-seven took seventeen years of development prior to it lastly appeared on the streets in 1978. With no the perseverance of a team of Japanese motor engineers and designers beneath the leadership of Kenichi Yamamoto, in the advancement of the Wankel or rotary engine, this stunningly developed, large efficiency jeu automobile, would in no way have happened. In 1961 the Japanese Firm Toyo Kogyo, later on to be renamed Mazda, certified from the patent owners NSU-Opel of Germany, the total rights to build a new rotary motor. The Rotary motor was named following its inventor Wankel and had no pistons or crankshaft as this kind of, but consisted of a easy fuel injected rotor blade that span close to a central generate-shaft that was connected to a rear wheel differential for drive. In idea the rotary engine is far superior, through its simplicity in style, than a standard piston combustion engine, with considerably less heading elements to go incorrect and direct generate energy output. Yamamoto's group at Mazda set to perform on building a rotary engine that would get over the troubles of loss of compression, exhaust, and the overheating of the rotor blades ideas, that had minimal Opels results at creating the technological innovation in the 1950's. Following results with earlier RX versions the RX-2, RX-3 and RX-5 and regardless of monetary troubles at the organization, Mazda ultimately arrived up with the more substantial 12A motor which was fitted to the new Mark 1 RX-seven developed from 1978 right up until 1980 and the collection 2 constructed from 1981 to 1983. The Mazda Rx-seven was a two seater additionally two hardtop jeu coupe, curvaceous and aerodynamic and it right away caught the imagination of the motoring world which globally hailed it as an fast design and style traditional. The design and style of the automobile was developed completely about the motor and exhaust configuration. A bi-rotor motor putting out what was noticed as equal of just 550 bhp per rotor the 12A in the RX-seven was capable of speeds of around one hundred thirty mph and with high lower-stop torque attained from to sixty mph in just six.3 seconds. Formally its bhp was just a hundred horse electrical power but provided how light the automobile was, it was typically described as like driving a skateboard, the power to weight ratio gave it an output equal to 230 bhp. Exhilarating to drive due to the fact of the smoothness inherent in the movement of the Wankel rotary motor, minor vibration or shaking was felt at higher motor speeds. An alarm was fitted to the rev counter to warn the driver when the 7000 rpm redline was approaching. If you exceeded it or did not heed the alarm the motor would lower out to protect the ceramic rotor guidelines from overheating. The car was expensive to run, the engine consuming close to twenty miles to the gallon but at half the price of a Porsche and with all the trimming this kind of as electrical windows and sun-roofs, the RX-7 was sought by younger and old alike. (Comment on this)
9:46 pm	Mazda 16x - The Foreseeable future of the Rotary Engine rotary 13b engine The Mazda RX2, Mazda RX3, Mazda RX4, Mazda RX7 and now Mazda RX8 are all examples of effective rotary motor sports vehicles. The New Mazda 16x Rotary Engine ought to even more popularize this offbeat combustion engine which features (as rotaries always have) a compact style with an extraordinary electricity-to-excess weight ratio all in just 1.six Liters. Mazda is calling this new rotary engine the "lengthy-stroke rotary motor." As you might already know, the 13B rotary motor has a displacement of just 1300cc, which is one.three Liters. While the Mazda 16x has an motor displacement of 1600cc (800cc x two), which is 1.6 Liters and however they've manufactured the 16x significantly more substantial than the 13B - it weighs less than a 13B. This is because of to aluminum side housings, which Mazda states shouldn't scare us. Mazda's intention here is "greater thermal efficiency" - which generally indicates, any car driven by the Mazda 16x is going to transfer like stink. Mazda says this [thermal efficiency] will enhance torque at all motor speeds. (Rotary engines are notorious for getting reduced torque, specifically on the reduced-stop.) They've also added Immediate Fuel Injection so you can expect the 16x to be considerably more inexpensive when compared to rotaries of the past. Harmful emissions will be tremendously decreased as properly and electrical power must be marginally increased compared to widespread multi-position fuel injected rotaries this sort of as the 13B. This should lean the fuel-air combination out as nicely and could enhance the rotaries nasty behavior of flooding every single time you shift her down the street a block. Mazda has carried out extraordinary issues with their light and sporty 1.three Liter 13B - just imagine what they can do with this new Mazda 16x! Far better yet, just visualize what you could do with this new Mazda 16x rotary engine! Sadly, nevertheless, Mazda has yet to announce a manufacturing vehicle to carry the 16x. The closest we've gotten is the Mazda Taiki, a far-out prototype produced by Mazda below the "Nagare"(which is, Japanese for "flow") idea of design. So when will we see this new rotary motor in action? Many anticipated this new rotary motor to seem in the 2009 Mazda RX8, but when the cover was pulled off at the North American Worldwide Auto Demonstrate in Detroit, we saw practically nothing but the Mazda 13B MSP Renesis engine beneath it's glimmering hood. To response the query your guess is as good as mine. (Comment on this)
9:30 pm	Traditional Automobiles - The Mazda RX-7 rotary 13b engine In 1961 the Japanese Organization Toyo Kogyo, afterwards to be renamed Mazda, certified from the patent proprietors NSU-Opel of Germany, the complete rights to develop a new rotary motor. The Rotary engine was named following its inventor Wankel and had no aide or crankshaft as such, but consisted of a straightforward fuel injected rotor blade that span around a central drive-shaft that was attached to a rear wheel differential for generate. In principle the rotary engine is far superior, by way of its simplicity in design and style, than a conventional aide combustion engine, with much less relocating components to go mistaken and direct drive energy output. Yamamoto's group at Mazda set to function on establishing a rotary engine that would get over the troubles of reduction of compression, exhaust, and the overheating of the rotor blades tips, that had limited Opels achievement at establishing the technological innovation in the 1950's. Soon after results with previously RX designs the RX-two, RX-3 and RX-5 and in spite of economic troubles at the firm, Mazda ultimately came up with the bigger 12A engine which was fitted to the new Mark 1 RX-seven developed from 1978 until 1980 and the collection two built from 1981 to 1983. The Mazda Rx-7 was a two seater in addition two hardtop passe-temps coupe, curvaceous and aerodynamic and it right away caught the creativeness of the motoring earth which globally hailed it as an immediate style basic. The style of the auto was developed totally around the motor and exhaust configuration. A bi-rotor motor placing out what was seen as equivalent of just 550 bhp per rotor the 12A in the RX-seven was capable of speeds of over 130 mph and with substantial very low-conclude torque attained from to 60 mph in just 6.three seconds. Formally its bhp was just 100 horse energy but presented how light the automobile was, it was usually described as like driving a skateboard, the energy to bodyweight ratio gave it an output equivalent to 230 bhp. Exhilarating to drive because of the smoothness inherent in the movement of the Wankel rotary motor, minor vibration or shaking was felt at large motor speeds. An alarm was fitted to the rev counter to alert the driver when the 7000 rpm redline was approaching. If you exceeded it or did not heed the alarm the motor would cut out to protect the ceramic rotor tips from overheating. The car was pricey to operate, the motor consuming about 20 miles to the gallon but at half the cost of a Porsche and with all the trimming these as electric windows and sun-roofs, the RX-7 was sought by young and outdated alike. Over 475,000 automobiles have been sold with the authentic Mark one design. The RX-seven was loved by excellent and undesirable alike and appeared in numerous Television shows, commercials and films. In Japan the automobile was adopted by the original Tokyo Drifters and road racers due to its pace and dealing with. In the Uk a modified Turbocompresseur version of the 12A RX-7 constructed by Elford engineering held the unofficial report for the quickest night-time lap of the circular M25 motorway that rings London, for 5 a long time. (Comment on this)
9:14 pm	Volumetric Performance of a Rotary Engine Explained rotary 13b engine Theoretical Volumetric Air Movement was calculated assuming that a 13B MSP rotary motor has equivalent displacement in 720º of crankshaft rotation as a 2.six Liter, four stroke aide motor. Recognize how VE climbs as Motor Speed boosts, till it reaches 5500rpms. This is were the motor is rated to generate peak torque, therefore its safe and sound to suppose that VE will peak at or close by 5500rpms. Furthermore, you can securely believe that Volumetric Effectiveness plotted towards engine speed will mimic the form and characteristics of the torque curve created by the engine. Be aware that the plotted VE is fairly linear: starts @ eighty% and climbs its way to a tad around a hundred%. If this experiment's results could be validated and the parameters I utilised had been accurate, it would signify that the Renesis engine -on my automobile at least- is in truth quite successful for a usually aspirated internal combustion powerplant -VE definition over. Calculating Volumetric Performance (VE) for the Renesis (13B MSP) rotary motor: We will use the following values obtained during our data log: Info: Consumption Air Temperature (IAT) = 82ºF Motor Speed (RPM) = 8561rpm AirFlow (MAF) = 27.3lb/minute THEORETICAL AIRFLOW CALCULATION: Formula: [(ED) x (rpm) x (VE)] / [(ES) x (C)] = TAF Variables: ED = Engine Displacement [in³] rpm = Motor Velocity [RPMs] VE = Volumetric Performance [%] ES = Engine Stroke Coefficient [#] Do = Conversion coefficient from in³ to ft³ TAF = Theoretical Air Circulation [ft³] Solving: [(159.64in³) x (8561rpm) x (1)] / [(2) x (1728 in³/ft³)] = TAF TAF = 395.42ft³ Values: ED = two.6 Liters (1308cc x 2) >> 159.64in³ rpm = I selected 8561rpm arbitrarily. VE = Because this corresponds to Theoretical VE, we assume VE = a hundred% (1) ES = Since we simplify a 13B engine to a 4 stroke piston engine -thus two.6L- we use a coefficient of two. C = 1728in³/ft³ AIR DENSITY & TEMPERATURE CALCULATION: System: [(t1) / (t2)] = [(d2) / (d1)] Variables: t1 = Temperature of air for a acknowledged density [ºR] t2 = Temperature of the intake air measured by the IAT sensor [ºR] d1 = Density of air for a acknowledged temperature [lb/ft³] d2 = Density of the intake air [lb/ft³] Fixing for [d2]: [(t1) / (t2)] x (d1) = (d2) [(491.67ºR) / (541.67ºR)] x (.0808lb/ft³) = d2 d2 = .073341lb/ft³ Values: t1 = 32ºF >> 491.67ºR t2 = 82ºF >> 541.67ºR d1 = .0808lb/ft³ VOLUMETRIC Circulation Price CALCULATION: Formula: [(MF) / (d2)] = AVF Variables: MF = Mass Flow fee taken from CANScan [lb/minute] d2 = Density of the intake air [lb/ft³] AVF = True Volumetric Flowrate [ft³/minute] Fixing: [(27.3lb/moment) / (.073341lb/ft³)] = AVF AVF = 372.233ft³/moment Values: MF = 27.3lb/moment d2 = .073341lb/ft³ VOLUMETRIC Performance CALCULATION: Formula: [(AVF) / (TAF)] = VE Variables: AVF = True Volumetric Circulation fee [ft³/minute] TAF = Theoretical Air Circulation charge [ft³/moment] VE = Volumetric Efficiency [%] Fixing: [(372.233ft³/moment) / (395.42ft³/moment)] = AVF AVF = .94 >> 94% Values: AVF = 372.233ft³/moment TAF = 395.42ft³/minute Is this remotely near to correct? I really don't know! I simply took the time to do a minor study by means of diverse channels & gathered data. (Comment on this)