2013 Master Product Catalogue - motor jikov group

C4 ENGI NECompression - Charged - Clean - CombustionAspire to develop engine technologywhich does not exist today.We will develop the world’s first 4-stroke enginethat uses mixed fuel. This same commitmentmotivated us during the 15 years we developed theC4 engine.C4 is a hybrid engine that combines the advantagesof both 2-stroke engines and 4-stroke engines.The features of the C4 engine include cleaneremissions, better fuel consumption, higher torqueat low speed, and more. Four-stroke enginesrequire more parts than 2-stroke engines, whichresults in the need for lighter weight components.C4 engines are used in portable machines suchas hedge trimmers and brushcutters. Enginesneed to work steadily without a decrease inperformance when used in any condition. Veryfew manufacturers can develop these smallengines. Shindaiwa made huge strides to developthe only engine like it in the world.The C4 engine has a more complex and longerpath through which fuel flows to the combustionchamber compared to normal 4-stroke engines.When fuel does not sufficiently lubricate eachpart or the air-fuel mixture does not go through theroute smoothly, the engine does not work properlyor, in the worst case, does not even start. Thekey to success is to make prototypes and movesteadily forward even if we sometimes return tothe starting point. The best direction cannot befound only by computer simulation. Repeated trialsand errors are also essential.In the future, C4 engine applications, whichoriginated in Japan, will expand. We are excitedabout this prospect.High power and Lower gas emissionsBy combining the high power-to-weight ratio and compactness of a 2-stroke engine with the precise fuelmetering of a 4-stroke, Shindaiwa engineers have successfully developed hybrid engine that deliversthe best of both worlds : the lightweight, high-torque, multi-position characteristics and greatacceleration of the 2-stroke ; and the low noise, increased fuel economy, and dramatically reducedexhaust gas emissions of 4-stroke.EngineerKenji SUZUKI14 15