Eng-Tips is the largest engineering community on the Internet
Intelligent Work Forums for Engineering Professionals
Looking for ideas on how to make a
- Thread starter NotStock
- Start date
- Thread starter
- #2
Since I am looking to build a street/track car without using a ecu my idea is use a air speed sensor and voltage regulator for the fuel pump and the pressure regulator on the return line would be on the fuel rail just above the injectors and controlled with the time in advance from ignition
LittleInch
Petroleum
Like I said in your earlier, now deleted thread, some specifics would help in terms of flow range and speed of response required.
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
BrianPetersen
Mechanical
It will sure help the rest of us if we knew what engine you are talking about here - and why you want to do this the hard way.
If it is an old school American V8 then intake manifolds and carburetors are readily available.
If it is an in-line 4-cylinder then some enterprising people have adapted motorcycle carburetors to them.
If you want fuel injection then question 1: what's wrong with the vehicle's stock ECU? question 2: MoTeC, Magnetti-Marelli, Megasquirt/Microsquirt, etc.
Yes, this stuff costs money.
Re-inventing a wheel that has already been invented long ago, costs more.
Half-arse-ing it because you don't/can't/refuse to do it the right way, is a sunk cost when it doesn't work right and you end up having to do it again, the right way.
If it is an old school American V8 then intake manifolds and carburetors are readily available.
If it is an in-line 4-cylinder then some enterprising people have adapted motorcycle carburetors to them.
If you want fuel injection then question 1: what's wrong with the vehicle's stock ECU? question 2: MoTeC, Magnetti-Marelli, Megasquirt/Microsquirt, etc.
Yes, this stuff costs money.
Re-inventing a wheel that has already been invented long ago, costs more.
Half-arse-ing it because you don't/can't/refuse to do it the right way, is a sunk cost when it doesn't work right and you end up having to do it again, the right way.
It would help if you research and understand the mechanical injection systems from the past. Hilborn, Enderle, Bosch Kugelfischer, Lucas, Bosch CIS. The last is the only one of these that can provide accurate fuel metering and maintain that over the life of a road car.
je suis charlie
je suis charlie
enginesrus
Mechanical
No such thing as a mechanical ECU, as it would be an MCU.
Look into how the old Rochester Fuel Injection system worked, or the old Mercedes Jerk pump system, those are good examples of a mechanical fuel system..
Look into how the old Rochester Fuel Injection system worked, or the old Mercedes Jerk pump system, those are good examples of a mechanical fuel system..
BrianPetersen
Mechanical
Bosch K-Jetronic CIS was on millions of cars back in the day, and it worked okay enough to give cold start, high altitude, idle, low speed, full load, etc. Still, its day has passed. The fuel distributor was a very intricate instrument.
I don't know how the Rochester mechanical system compared to K-Jetronic.
I don't know how the Rochester mechanical system compared to K-Jetronic.
- Thread starter
- #10
- Status
Similar threads
- Locked
- Question
- Locked
- Question