Hydraulic Solenoid Valves

After deciding to find a solenoid valve to use so that I could get its dimensions in order to determine how all of them would fit into the valley of the block, I began doing a some searching. In order to limit the number of solenoid valves needed, I would have to use a 3-way/3-position design such as this one: EMBV-09-3J.

Unfortunately I can not use this solenoid because of its 50 ms (0.005 s) response time. At 6000 RPM the crankshaft is turning 360 degrees in 0.01 s or 1 degree every 0.0000278 s. The crankshaft would theoretically turn 5 times before this solenoid valve would allow an intake or exhaust valve to fully open and close even once.

I have found that Parker has design that is much faster: DFplus. I have tried searching Parker's official website for CAD data and performance specs but can not find any. I have sent them an e-mail requesting this information and hopefully I get a response soon. In this link above it is stated that it has a response time of less than 3 ms and I have found a brochure stating that this time is 10 ms. I have even searched for response times of solenoids and found that one is stated to open in 5 ms and close in 2 ms. Unfortunately, even though those numbers showed up in the search results, the link was dead so I could not get the make and model of it.

At 6000 RPM, 5 ms equates to 180 degrees of crankshaft rotation and 2 ms is 72 degrees. This means, theoretically, that the solenoid valve would be off its seat for 252 degrees (roughly 7.0056 ms) if it was closed immediately after fully opening. I would have to use more than one solenoid to control opening and closing the intake or exhaust valve to make 6000 RPM a possibility if these were its response times because a 3-way/3-position solenoid valve would have to actuate twice per intake or exhaust valve action. A 3-way/2-position and a 2-way/2-position solenoid working together would be more ideal with these response times.

I am going to put together a spreadsheet to make determining the relationship between a solenoid valve's response times vs RPM much easier. That will give me something to do until I get the information I need.