2013 1.5 L Entry Level Engine

[ivantoar]

A Challenger appears! (If I may)

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95% of the power, 93% of the torq, 10% less weight, 10% less cost and less then half! the build time. Shame about the econ though, I can never figure that one out :/

Edit to add, I can switch to SOHC-4 and still come in a bit lower in weight and cost for i think 107hp and 139 nm torq, but econ is still only 18.5% :/ are you running VVL/VVT? messing with quality sliders?

Hint: The economy comes with a price and more man hours

I think I managed to make mine slightly better

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Less man-hours, less noise, more economy, more power, more peak torque and at a lower RPM. However it came with little cost of emission, smoothness, MBTF, and extra $3 to material cost.

[Kubboz]

So, here is my challenger.
Not the most powerful of the pack, not the lightest of the pack, not the most reliable of the pack, not the most economical of the pack, not even the cheapest of the pack, but definitely the most balanced one.
I do not think the economy increase related to VVL it worth the costs, ivan.

[ivantoar]

So, here is my challenger.
Not the most powerful of the pack, not the lightest of the pack, not the most reliable of the pack, not the most economical of the pack, not even the cheapest of the pack, but definitely the most balanced one.
I do not think the economy increase related to VVL it worth the costs, ivan.

Interesting. Here's my take without VVL.

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The problem is I don't really know how economy measurement in engine designer (g/kwh) compares to actual mileage (liter/100 km) thus making me blind on cost vs economy.

What do the economy percentage means anyway?

[Kubboz]

Economy percentage is the engine's efficiency, and is not easily convertable into l/100km without informations about the car. In other words, you'd need to put the engine into car to know that.

[ivantoar]

Economy percentage is the engine's efficiency, and is not easily convertable into l/100km without informations about the car. In other words, you'd need to put the engine into car to know that.

Yes I am aware of that. But anyway, how much efficiency is considered as good? Chasing numbers without knowing about it is pretty useless

[Killrob]

For comparison: The Prius has something like 230g/kWh.

[ivantoar]

For comparison: The Prius has something like 230g/kWh.

Thanks! This is a valuable info. Do you happen to know other cars values'?

[Killrob]

In the Engine Designer we measure things in Brake Specific Fuel Consumption. Wiki has a few comparisons there.
http://en.wikipedia.org/wiki/Brake_spec ... onsumption

[ivantoar]

The brake specific fuel consumption data of cars that I find is very low. I wonder how much effort and cost do manufacturers put to make it so efficient.