Recent content by xxChrisxx

  1. X

    Automotive Design and Simulation of a four stroke Otto engine

    I think we need to clarify what you want to achieve and what is feasible. Do you want to design an engine, or do you want to draw a picture of one? 3D CAD is essentially an elaborate drawing.
  2. X

    Planetary gearbox speed calculation - Simultaneous equations

    I'm looking to calculate the ratio of a planetary gear train. With the ultimate goal of producing a spreadsheet/calculator to show the state of the gearbox (i.e. all shaft speeds) based on applied constraints. A gear set consists of Ring Gear, Planet Gear, Sun Gear. The sick diagram is the...
  3. X

    Preserving Vehicle Transmission in Park

    Unless you regularly park in San Francisco with your car pointing up or down a hill. Just put it on when the vehicle is stopped and don't worry about it.
  4. X

    Automotive Why flywheels are needed in automobiles?

    Not read the article properly, but it's not really outside the box anymore. ;) It's effectively a P1 hybrid architecture. Can replace the starter, but not the alternator. As you keep the high voltage and low voltage systems separate.
  5. X

    Can Einstein Index Notation Help Me Solve Equations in Continuum Mechanics?

    Einstein notation... Sorry mate it's all about the lathes, spanners and Sir Issac around here.
  6. X

    Automotive Torque Convertors: A Physics Puzzle

    It's all in the book chaps.
  7. X

    Automotive Torque Convertors: A Physics Puzzle

    It'd be a bit silly to call it a stator if it never operated in a fixed stated. It sits on a one way clutch that is grounded to the transmisson case via a splined sleeve.
  8. X

    Automotive Torque Convertors: A Physics Puzzle

    A torque converter has a stator that redirects the flow. This is the stationary element in the circuit. The stator is housed on a one way clutch so it only reacts when there is a speed differential between the pump and the turbine. It amplifies torque at the expense of speed. Maximum torque...
  9. X

    Automotive Wind Turbine on the grill of the car

    Got to be careful about making sweeping statements. A system can be conceptualized that could yield an overall benefit. OP's statement about putting a system on the inside of the car is part that makes it interesting. In the same way that a cars can control cooling vents. Open when needed...
  10. X

    Understanding the Power of an Engine

    I think you are missing the point of the OP's question. It's one of concepts, not systems of units. He's not confused because he's getting the wrong numerical answer because he's using rpm and not rad/s. He's asking where that torque comes from. He should have used P ∝ Tw or P = k.Tw My point...
  11. X

    Understanding the Power of an Engine

    An engine power thread that might not descend into a pile of nonsense. The question is how do these components produce any torque/power measured? I think OP is being conceptual making ∝ more appropriate. One might pedantically argue that he never stated the units of torque or power he...
  12. X

    Automotive Modern Inline Eight Gasoline Engines

    If it'd be competitive or not is largely irrelevant. A straight 8 is very long. Long engines are bad for crash performance.
  13. X

    Automotive Troubleshooting Idle Flutter Noise in a Mini Cooper | Engine Noise Fix

    22Hz is firing frequency at 900rpm. AC increases engine load. So this could very well be normal. Really impossible to tell without actually hearing it.
  14. X

    Effective Design Checking Techniques for Mechanical Engineers

    Well first of all. How do you work? What is your current procedure? If you are the sole engineer and you realize that you are running into challenges, it would highlight that training is needed. Design for assembly, interface analysis etc.
  15. X

    Moment of inertia of a gearbox

    Would you care to elaborate how it would have saved time? What issue would it have discounted? Would weighing vs calculating the inertia of a system miss any particular issues? It's not really answering the question of why you think calculating the inertia of the system is a waste of time.
Back
Top