r/AutomotiveEngineering

Hi guys-- I came across this link where a group of automotive veterans from GM and Chrysler have compiled a list of essays-- mostly around vehicle development-- damper tuning, steering development, war stories with bushing/bar tuning etc etc. It feels like a growing gold mine. Check it out and I'd be curious if anyone might want to join me (active suspension engineer from ClearMotion here.)

https://8-fold.io/lens/7e3514b5-0f66-449d-81d5-c118fff3ea68

I'm designing a custom intake manifold for a 16-valve engine and I’m looking at using a Bosch EV14 injector with an extended nozzle and EG twin-spray pattern.

The Bosch information I’ve found gives the angle between the two spray beams, along with the overall spray offset and orientation. However, I can’t find the included angle or width of each individual spray cone.

I need this information to determine:

- How far the injector nozzle should be positioned from the inlet valves

- Whether each plume will target the correct valve area

- Whether the spray will clear the injector boss and port walls

- The correct injector angle and nozzle position in the runner

Does anyone have a Bosch spray-targeting or patternation drawing for an EV14 EG-type injector?

I’m ideally looking for:

- The individual cone angle of each plume

- Spray diameter at a known distance, such as 30, 50 or 70 mm from the nozzle

- Recommended nozzle-to-valve distance

- Part numbers for high-flow extended-tip EG injectors, ideally around 1,000 cc/min at 3 bar

Any Bosch documentation, test results or experience positioning these injectors would be appreciated.

AI is taking jobs, a teenager is dead after talking to ChatGPT, and the same companies building this stuff are lobbying for legal immunity before anyone can hold them accountable. Flock cameras are already watching you. Humanoid robots are already in warehouses. Nobody voted for any of this, and nobody's slowing down to ask if it's safe. This is what's actually happening, not the sanitized version.

This video discusses a case involving teen suicide and AI chatbots. If you or someone you know is struggling, the 988 Suicide & Crisis Lifeline (call or text 988) is available 24/7.
(I am a witness, not a legal professional — this is my own research/opinion. CW: discussion of teen suicide.)

Sources: https://www.youtube.com/watch?v=RafuYcUolY4&list=LL&index=20, https://www.youtube.com/watch?v=qCsYVL-v-3A, https://www.youtube.com/watch?v=gIxq03dipUw&list=LL&index=15&t=11s, https://www.youtube.com/watch?v=qnOmUWd-OII&t=16s, https://www.youtube.com/watch?v=wlMgNtBipe4&list=LL&index=13&t=6s, https://www.youtube.com/watch?v=gIxq03dipUw&list=LL&index=15&t=305s, http://youtube.com/watch?v=AdUNz3x3re0, https://www.youtube.com/watch?v=zNrmeuU3csg&list=LL&index=17&t=27s, https://www.youtube.com/watch?v=bC4Spp6Swxc&list=LL&index=12&t=746s, https://www.youtube.com/watch?v=aooiDA-AsNo, https://www.youtube.com/watch?v=7viqI2WFfog,

Hi everyone, I'm in need of this type of plug. It's a 13pin connector which is found in a volvo s80 I, s60 I, v70 II and XC90 I from the early to mid 2000's.

There it's used to connect the cables of the towbar.

Kind regards!

https://www.youtube.com/watch?v=ny_Bf9P_yaE

Yo soy un poco friki de esto, y en el assetto corsa siempre me fijaba que se deforman los neumáticos, y en beamNGdrive.

Y en mi fp de automoción hice un TFG sobre justo esto, sobre cómo todas las geometrías de suspensión y alineacion van enfocadas a pisar bien y deformar bien el neumático. Entendiendo bien como lo que buscas vaya

Y hace poco puse una cámara derrapando con un e46 320d, en las ruedas delanteras, y no me esperaba ver ese ángulo de deriva, y me quedé alucinado, lo comparto para que lo disfruten

(Si saben otro hilo donde pueda interesar estos temas o publicaciones diganlo)

Building a two stroke mos mos

I am annoyed at a respected Japanese craftsman in the chassis reinforcement space for declining to work on this brace for me as a product. Ignore the clashes and hole details -- this was a mockup to propose work and communicate the packaging requirements.

Brace material would have been Ti or Al sheet, welded at the centerline to create a large cross section with low unit weight. This mockup uses a 10mm hollow section, likely .080" thick sheet, which creates rounded box sections. The crux of all forward brace products is that they don't improve the engine bay's torsional rigidity at all, and there is no direct connection available between opposite corners of existing structure. The hood is in very close proximity to the strut brace, perhaps 1.5-2" above the engine cover.

The original OE brace is very lightweight and was likely added as tension support to handle increased aero load on the very forward leading edge of that aero package. The lateral brace is there to prevent it buckling given the bends are there specifically for packaging reasons.

He gave this response:

>The radiator core support is made of resin; I feel that simply bolting a custom-fabricated rigidity panel to the two existing bolts there would not yield the expected results. That is precisely why [we have] not commercialized a bolt-on part of this type.

>I sincerely apologize, but we cannot manufacture parts where ensuring performance is difficult.

>Thank you for consulting us on this matter.

I think this is a bit silly, as my structures experience would say -- provided the underlying structure is sufficiently stiff, and bearing load is not an issue -- there is no functional difference of material of that structure.

Would like to hear from some structural engineers in industry what their thoughts are on reinforcing secondary structure.

What type of steel would be used on a lower front control arm mount of an SUV (2006 jeep liberty). Would it be mild steel or HSS? What yield strength. Atleast approximately.