Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Hiro

550results about How to "Reduce smoke" patented technology

Composite flame retardant containing microcapsule-coated intumescent flame retardant and preparation method

The invention belongs to the field of flame retardant materials, and particularly relates to a composite flame retardant containing a microcapsule-coated intumescent flame retardant and a preparation method. The composite flame retardant containing the microcapsule-coated intumescent flame retardant consists of the following components in percentage by mass: 60-94 percent of microcapsule intumescent flame retardant, 5-25 percent of flame-retardant synergist, 0.9-10 percent of smoke suppressant and 0.1-5 percent of hindered amine light stabilizer. The preparation method comprises the following steps: preparing the microcapsule-coated intumescent flame retardant; placing the microcapsule-coated intumescent flame retardant, the flame-retardant synergist, the smoke suppressant and the hindered amine light stabilizer into a high-speed mixer for mixing uniformly, and discharging to obtain the composite flame retardant containing the microcapsule-coated intumescent flame retardant. Multiple components in the composite flame retardant can play roles in retarding flame in a synergetic way, so that the flame retardance of a high polymer material is improved remarkably, the production of toxic and harmful smog in a burning process can be suppressed, and the flame retarding efficiency is increased greatly.
Owner:LIAONING TECHNICAL UNIVERSITY

Method for preparing flame-retardant low-smoke halogen-free hot-vulcanized silicone rubber compounds for metro vehicles

The invention relates to a method for preparing flame-retardant low-smoke halogen-free hot-vulcanized silicone rubber compounds for metro vehicles, which is characterized in that the method comprises the following technological process: adding methyl vinyl silicone rubber to a kneading machine; adding white carbon black and hydroxyl silicone oil; mixing the materials for 1+/-0.1 hour at a nitrogen-supplying speed of 5+/-0.1 cubic meter/hour at a temperature between 170 and 190 DEG C; cooling to 60+/-5 DEG C; adding porcelainizing powder, aluminum silicate, chloroplatinic acid, zinc stannate and aluminum hydroxide; continuing to mix for 0.5+/-0.05 hour; discharging the materials; filtering rubber in a rubber filter; cooling the obtained product to room temperature; adding 2,5-dimethyl-2,5-bis(tert-butylperoxy) hexane or peroxide bis(2,4-dichloro-benzoyl) serving as a curing agent to an open mill; mixing well; and obtaining the flame-retardant low-smoke halogen-free hot-vulcanized silicone rubber compounds for metro vehicles. As the method adopts halogen-free flame retardant and particularly adopts a porcelainizing smoke-cutting technique, smoke almost completely disappears after the product produced by the method burns for a plurality of minutes, and the inside of the product can be kept in good condition.
Owner:JIANGYIN HAIDA RUBBER & PLASTIC GROUP

Control device for a diesel engine

There are provided a diesel engine that injects fuel into air compressed in cylinders and combusts the fuel by spontaneous ignition, and a control unit that sets the fuel injection timing to an earlier time point than the compression top dead center to premix air and fuel and combusts the air-fuel mixture compressed in the cylinders by spontaneous ignition. The control unit injects the fuel to be injected in an early stage in a plurality of stages according to the operation state of the engine and individually adjusts the injection pressures of their respective stages according to the gas density and the gas temperature in the corresponding cylinder.
Owner:MITSUBISHI FUSO TRUCK AND BUS CORPORATION

Control method of EGR system of engine

InactiveUS6868329B2Favorable controlPressure equalizationElectrical controlNon-fuel substance addition to fuelValve openingEngineering
A control method of an EGR system of an engine capable of effectively performing an EGR control at a time of rapid acceleration. For this purpose, an intake air flow rate of the engine is obtained, and from a target EGR valve opening degree and a difference in pressure in front of and behind the EGR valve, a virtual EGR gas flow rate is arithmetically operated. A virtual EGR rate is obtained from the intake air flow rate, the fuel flow rate and the virtual EGR gas flow rate, and a difference from or a ratio to a target EGR rate obtained from the engine speed and the fuel flow rate is obtained. A command EGR valve opening degree is obtained from an EGR valve opening degree correction coefficient obtained from the difference or the ratio, and the target EGR valve opening degree, whereby the EGR vale is driven.
Owner:KOMATSU LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products