fuel injection rate control

... 2 Basic Control Method for Injection Timing In order to change the injection timing, the amount of fuel pressure added to the timer piston of the injection pump is controlled, and the ... varies the timing of the start of injection The control of injection timing when the timing control valve is ON is explained below The control when the timing control valve is switched between ... Timing Control Valve (TCV) R e ta rd T i i g m n : Timing Control Valve is widely open When the pressure is low in the high pressure chamber side, the timer piston is pushed in the direction of injection...

Ngày tải lên: 23/10/2012, 09:09

... Counter Electromotive Force End of Injection Current Control 11 SERVICE TECH Vol.468 03-10 Current Control Calculation of the Injection Volume 3-1 Calculating the Injection Volume Based on the engine ... solenoid spill valve is delayed, the injection time is lengthened, and the injection volume is increased Injection Increase Volume Engine Speed Sensor Signal (Cam Angle) Injection Angle (Time) Cam Lift ... Valves The solenoid spill valve is directly linked to fuel injection volume control, so the responsiveness of the valve strongly influences the injection volume If the coil resistance is lowered...

Ngày tải lên: 23/10/2012, 09:09

... Optimized injection data for port and manifold injection Injection Parameter Start of injection of hydrogen Hydrogen injection duration Hydrogen flow rate Exhaust gas Recalculation Port Injection ... performance of dual injection hydrogen fueled engine by using in-cylinder injection and external fuel injection techniques An increase in thermal efficiency by about 22 % was noted for dual injection at ... calculated from pressure data, and lower heating value of the fuel supplied ( Q fuel ) Q Q fuel Q Q fuel Q Q fuel = (Q B − Q C ) / Q fuel = (Q B − Q C ) × η u / Q B (9) = η u × (1 − φ w ) where...

Ngày tải lên: 05/09/2013, 15:28

... Disconnect the fuel return hose from the regulator Be prepared for fuel spillage and Electronic fuel injection system 4D•3 Disconnect the fuel supply hose from the fuel rail, and disconnect the fuel return ... module Fuel system The fuel pump and fuel level sender unit are contained in an integral unit in the fuel tank The fuel pump is electric, and its electrical supply is provided via a relay controlled ... between the fuel pump and the fuel rail A fuel pressure regulator, mounted on the return end of the fuel rail and connected by a pipe to the inlet manifold to sense manifold pressure, controls fuel...

Ngày tải lên: 25/01/2014, 02:20

... rate of interest can be anything in his model this provides scope for a central bank (an outside agent) to set the rate of interest By control of the interest rate the central bank can then control ... colin.rogers@adelaide.edu.au Abstract: Wallace attempts to analyse central bank interest rate control in a cashless, ArrowDebreu economy The model incorporates only the unit of account function of money and exhibits a ... sell date-1 ecus for date-2 ecus so as to tie down R and the rate of ‘inflation’ This is hardly surprising To control the nominal rate of interest, i.e the interest factor R, the central bank...

Ngày tải lên: 22/03/2014, 17:20

... seems that the nominal interest rate can be anything Therefore, there would seem to be scope for an outside entity, the central bank, to choose the nominal interest rate One way to think of a central ... real terms And setting a nominal interest rate does not prevent p1 and p2 from being arbitrarily large Fiscal and monetary policy Notice, of course, that control of R as just described leaves one ... interest-bearing cash when they seem to have available assets with higher rates of return Also, there is no zero lower bound on nominal interest rates This bound arises in an economy with cash because people...

Ngày tải lên: 29/03/2014, 01:20

Ngày tải lên: 26/05/2014, 15:16

... delivery system, fuel heated by the engine returns to the fuel tank and has warmer fuel creating more fuel vapors Fuel Pump The fuel pump is mounted in the tank and immersed in fuel The fuel cools ... ON/OFF Control by Fuel Pump Switch • ON/OFF Two Speed Control with a Resistor • ON/OFF Two Speed Control with Fuel Pump ECU • ON/OFF Three Speed Control with Fuel Pump ECU The most accurate way ... Reserved FUEL SYSTEMS #1 - OVERVIEW Fuel Pump Controls A variety of fuel pump control circuits and controls have been used over the years The following basic methods are: • ON/OFF Control by...

Ngày tải lên: 28/05/2014, 14:24

... volatility fuel requires more energy to be heated and then evaporate than a high volatile fuel Therefore, for a low volatile fuel, liquid length penetrates much more than a more volatile fuel because ... between the spray of fuel and the combustion chamber wall, hence 20 Fuel Injection the importance of measuring the liquid phase penetration of the fuel in Diesel engines with direct injection, using ... 14 Fuel Injection Current trends and future challenges At the present day, in the some gasoline engines are used port fuel injection system This technique has...

Ngày tải lên: 20/06/2014, 11:20

... the mass flow rate injected in the cylinder and the theoretical mass flow rate computed from the Bernoulli equation The mass flow rate of fuel injection was measured by a fuel rate indicator ... most stable region during the fuel injection process (Martínez et al., 2007) Injection Nozzle Measured mass Theoretical Cd pressure diameter flow rate mass flow rate (bar) (μm) (g/s) (g/s) 300 ... ρB Piny C d n a (39) G H LL max µ dE ρF Piny Cd n a (40) 5.4 Determination of the fuel injection onset The fuel injection onset can be determined assuming that LL increases proportionally to the...

Ngày tải lên: 20/06/2014, 11:20

... speed of injection pump camshaft Static opening pressure of injector Background pressure Maximum fuel injection pressure Average fuel injection pressure Kinematic viscosity of fuel Diesel Fuel Rape ... mass flow rate ma and the fuel mass flow rate mf are normally measured The ratio of these flow rates is useful in defining engine operating conditions are air /fuel ratio (A/F) and fuel/ air ratio ... determining fuel distribution in a spray of drops (top view) s 78 Fuel Injection The height of fuel in the measuring vessels was adopted (denoted by Hp) as a comparative measure to ascertain the fuel...

Ngày tải lên: 20/06/2014, 11:20

... 94 Fuel Injection Fuel- air mixing increases as the fuel nozzle holes orifice diameter fuel nozzle holes decreases Also soot incandescence is observed to decrease as the amount of fuel- air ... the control piston), is then returned to 98 Fuel Injection Fig Injection equivalent hydraulic circuit tank after passing through a small opening, modelled with the resistance R T , between control ... leakage flow rate that can be as low as one third of the real one (White, 1991) Accurate modelling of an injector for common rail systems (a) Control valve 99 (b) Needle and control piston Fig Injection...

Ngày tải lên: 20/06/2014, 11:20

... two-stage split and early fuel injection, J of Engineering for Gas Turbines and Power 124: 660–667 120 Fuel Injection The investigation of the mixture formation upon fuel injection into high-temperature ... behavior from multiple injections common rail systems, SAE paper 2002-01-2777 118 Fuel Injection Canakci, M & Reitz, R D (2004) Effect of optimization criteria on direct -injection homogeneous ... temperature T0 It was 122 Fuel Injection assumed that the stalling air flow at the inlet had a developed turbulent profile and that the spraying air had a uniform profile Injection of a fuel with a temperature...

Ngày tải lên: 20/06/2014, 11:20

... 134 Fuel Injection determined by the interaction of air flows with droplets, and therefore the influence of the fuel flow rate on the formation of temperature ... upon fuel injection into isothermal swirling flows (spraying by pneumatic atomizer); T0 = T1 = 900 K; - a) -1 = 0 = 30, b) 1 = 0 = 60 The investigation of the mixture formation upon fuel injection ... the overall combustion noise, which 150 Fuel Injection includes in the correlation a strict dependency on the engine operating conditions and injection strategy The main idea behind this technique...

Ngày tải lên: 20/06/2014, 11:20

... Optimization”, Sae Paper 2001-01-1509 Hydrogen fuelled scramjet combustor - the impact of fuel injection 167 X Hydrogen fuelled scramjet combustor - the impact of fuel injection 1College Wei Huang12, Zhen-guo ... #115, respectively) 164 Fuel Injection Figure 23 compares the related optimal injection strategies, while figure 24 finally shows the pressure cycles, the heat release rates, and the NO and soot ... region and the location of the generated shock wave can Hydrogen fuelled scramjet combustor - the impact of fuel injection 171 be predicted reasonably accurately when compared with the experimental...

Ngày tải lên: 20/06/2014, 11:20

... more intense combustion  The fuel injection varies the dimension of the eddy generated in the nearby cavity flameholder Due to the fuel injection, the eddy generated in the nearby cavity flameholder ... scramjet combustor because of the fuel injection location, see Fig 12(d) and (e) Due to the fuel injection being before the cavity flameholder, the eddy generated in the second lower cavity flameholder ... in the vicinity of the walls This illustrates that the injection pressure is not high enough to make the fuel penetrate deeper The recirculation zone generated at this condition is much larger...

Ngày tải lên: 20/06/2014, 11:20

... methanol and EG injection They concluded that the rate of hydrate dissociation is a function of chemical concentration, injection rate, pressure, temperature of chemical solution and hydrate-chemical ... hydrates during the brine injection with low salt concentrations and high temperatures, and measured the effect of the temperature, the salinity, and the injection rate of the brine on the hydrate ... (Kono et al., 2002) measured the dissociation rate of methane gas hydrate by 228 Fuel Injection depressurizing method and derived the kinetic dissociation rate equation and the order of reaction Tang...

Ngày tải lên: 20/06/2014, 11:20

... Solution injection and production rate( g/min) Fig 19 The cumulative gas produced during the hydrate dissociation for Runs 3-7 24 EG injection rate Solution production rate 22 20 18 Hydrate Dissociation ... produced from hydrate dissociation by EG injection for all runs The EG injection time is from the beginning of EG injection to the end of hydrate dissociation Onset time for hydrate dissociation ... hydrate excluding the free gas in the vessel Total gas produced after EG injection is also given in Table The rate of hydrate dissociation by EG injection is a function of EG concentration, injection...

Ngày tải lên: 20/06/2014, 11:20

... injected fuel quantity, start of injection, duration of injection, and rate of discharge curve, as well supervises the correct functioning of the injection system as a whole COMMON RAIL FUEL INJECTION ... diesel engine with fuel • Generate the high pressure needed for fuel injection and distribute the fuel to the individual cylinders • Inject precisely correct amount of fuel at exactly the right moment ... Transports fuel from the fuel tank to the high pressure pump An electric fuel pump is used for this purpose in the CRFIS When the electric fuel pump is switched off, the supply of fuel is interrupted...

Ngày tải lên: 20/06/2014, 17:41

... t, the scheduling and rate control policy identifies a rate vector r(t) = (r1 (t), , rK (t)) ∈ A ⊆ R that specifies which transmitters are activated and their respective rates We can formulate ... three possible scheduling and rate control actions, namely (1) only transmitter accesses the channel at a rate of bits/sec, (2) only transmitter accesses the channel at a rate of bits/sec, and (3) ... reduced rate) and transmitting less frequently (at a higher rate) We expect that this approach will help us gain valuable insights regarding the nature of optimal scheduling and rate control...

Ngày tải lên: 20/06/2014, 22:20