Questions tagged [automotive-engineering]
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Are double universal (Cardan) joints exactly constant velocity?
Some double universal joints use a centering joint to ensure that the angle of the input and output are equal to maintain a constant velocity through the joint. From what I can tell, this centering ...
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Is there a way to add a DIY knock sensor to an engine?
I have a Rotax 914, a type of aircraft engine which is basically a 1980s turbocharged carbureted 4-cylinder boxer. There is no knock sensor, but considering the absolute devastation that detonation ...
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How can a slipper assist clutch on a motorcycle provide a friction zone?
Most modern motorbikes come with a slip and assist clutch - this is typically provided by a mechanism of ramps that will force the clutch plates apart when the engine drives the wheel under hard ...
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What specification describes best a bulldozer "strength"?
Bulldozers are tracked-type tractors designed to push soil and heavy objects. In a typical specification sheet, the following are listed:
Flywheel power (hp or kW)
Gross power (hp or kW)
Engine ...
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Minimum number of cylinders of Opposed Piston 2 stroke Diesel Engine
Would fewer than 3 cylinders work? Would 2 cylinder and even a single cylinder cause too much non-overlapping time between intakes so that the centrifugal impeller of the super/turbocharger starts to ...
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How much can you modify a car without affecting safety systems? (Airbags, Crumple zones)
I have a silly little idea for a car involving moving the engine to the back (FF or FR, into a RR). I know it sounds silly, but silly ideas are just how I seem to run. I simply don't see the fun in ...
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Power and energy usage monitoring for Vechical Control Unit (VCU)
I'm working on a project for an EV (electric vehicle) and I'm working on the VCU. I think the task that was given to me is to get all the data from a transformer or a DAQ (Data acquisition system) and ...
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Automated steering system for crash testing vehicles
To test crash barriers, we crash cars into them at a specific speed and angle. The car must hit a designated impact point within plus or minus X inches.
I'm wondering if it is possible to build a ...
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Alternatives of rubber sealant cement for finalizing patch-plug repair on car tyre?
I am doing a patch-plug repair for a 2mm puncture injury on my car tire:
I have two questions:
1.) The minimum I got at local stores (in India) is a 6mm patch-plug. Do I need to drill/cut the injury ...
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Energy comparison of gas and electric automobiles
I'm trying to work out some comparisons of gas and electric automobiles, and am running into something that doesn't seem right to me. Let me explain:
Let's say a typical electric car has a range of ...
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Bolt tensile load through an "intermediary"?
Following up on this question, does it change anything if the bolted arm is an intermediate arm (e.g. some sort of mating interface like below)? That is, the arm receiving the load is connected to the ...
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How to clean out base oil entirely
I've got a fluid line filled with base oil (Lubricant Oil). Would running detergent through it clean the line? I was thinking of running normal detergent water through it.
I'd like to use the same ...
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Failing engine A-Mount (bad design by the automotive manufacturer?)
I currently own a Tata Nexon Petrol car (in India) where I have seen (on facebook, Telegram, WhatsApp owner groups and youtube) that the A-Mount on the engine has suffered multiple failures for some ...
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Any real heat engines based on the Carnot cycle? (or an equally efficient cycle)
Most practical heat engines are based on ideal cycles whose processes are different from the Carnot cycle (eg; constant pressure or constant volume heat addition instead of isothermal). I understand ...
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How to model a driver's appropriate braking for deceleration, and throttle for acceleration for a car moving on a straight road?
A project team within my company is stuck on a conundrum and have asked me for some insights. They want to develop a driver model (mathematical or drawn) where input is the car's velocity profile, and ...
