Have been damaging DC SSR's installed in a vehicle controlling electric fans and air compressors. Most failures have been short from source to drain. Have large zener protection (MR2535) across the SSR and suppression across the load
with 1N4001 diode. Relays are rated 30amp. Loads are about...
I should clarify my comments about PWM and relays. I'm only using solid state (electronic) relays. Mechanical relays would probably give up the ghost in under 5 minutes!
I've been playing around with solid state relays to vary pump speed, especially the large Weldon pumps. I've found these pumps need at least a 2000hz PWM drive. The relays I've used are fast-switching sinking types not
sourcing. It's amazing how much diode suppression the pumps need when...
In almost all cases, the engine will make more power when the injectors are higher up but there are some trade-offs. Additional area of wetted manifold will increase the magnitude of AFR transients upon throttle angle change.
This can be counteracted by proper accel enrichment and decel...
Warpspeed,
You shouldn't see temps that high, unless something is wrong (like
retarded timing)
There is a tradeoff between response time and sensor lifespan.
Top Fuel Drags typically use naked end 1/4 in. dia. K type for EGT.
They won't last forever but they respond quickly.
Good success...
Clean air Partners in San Diego makes a variety of large flow CNG injectors.
Quantum in Irvine, Ca. makes very large flow injectors for hydrogen.
Bosch makes CNG injectors for lots of OEMs.
Regular pintle injectors such as Bosch 403 have been used in the past with methanol in Indy Car engines...
Stewart Van Dyne, Van Dyne Engineering in Huntington Beach
Froude Dyno, some data, manual load control, no emissions.
Allen Engine Development in Ventura, WWW.ALLENENGINE.COM
water and eddy current brakes, plendy of data aq, not sure about emissions capability.
Caldwell Engine Development...
If memory serves me, the HEI module takes a VR AC waveform and converts it into a REF logic pulse. The REF pulse goes to the ECU. The ECU sends back an EST waveform with dwell start on the rising edge and spark (module trigger) on the falling edge.
I guess if you created a...
The systems I've seen use a differential pressure sensor to measure MAP against fuel pressure. The fuel pump is then pulsewidth modulated by an ECU to give the desired pressure differential over MAP. This saves a lot of power owing to the fact that at light load the pump's duty cycle can be...
The dynamic range of the injector can be doubled by operating them in once-per-cycle-sequential mode rather than once per rev group mode. Sequential operation is probably the easiest way to get better flow range.
CDI stores the ignition energy in an electric field of a capacitor, Inductive ignition stores the energy in the magnetic field of an inductor (coil). The CDI can switch a large current through a low inductance/resistance pulse transformer very quickly so it is suitable for extreme spark rates...
The part number you gave does not look like a GM number... but "749" is the last 3 digits of a delphi 3 bar map sensor part number.
You could measure it's output voltage at sea level atmospheric (100Kpa) pressure to determine it's calibration. If I remember correctly, when you apply...
The connector family you are looking for is made by Amp, a division of Tyco Electronics. The connectors are called Multilock Hybrid 040/070 and are available in multiple configurations.
good luck
