SPD RESTR NOT ADHERED TO IN FLC DEV. SPD DEV.

Narrative

ATC HAD ASSIGNED 250 KTS ON CLBOUT FROM DTW DUE TO TFC AHEAD OF US. PASSING THROUGH FL180 (WE WERE ASSIGNED FL280) WE PASSED THROUGH A COLD FRONT AND ENCOUNTERED A WINDSHEAR WITH SEVERE TURB RESULTING IN A SUDDEN INCREASE OF AIRSPD (TO PLUS OR MINUS 300 KTS) AND RATE OF CLB WHILE ON THE AUTOPLT. I DISCONNECTED THE AUTOPLT; INCREASED PITCH AND REDUCED PWR TRYING TO MAINTAIN TURBULENT AIRSPD VA (285 KTS); HOPING TO FIND SMOOTH AIR AT A HIGHER ALT. ATC VOICED SOME CONCERN OF OUR AIRSPD AND CONFLICT WITH TFC AHEAD WHILE BEING VERY UPSET WITH OUR AIRSPD INCREASE; CLAIMED WE HAD A 100 KT CLOSURE. PASSING 22300 FT ATC DEMANDED THAT WE LEVEL OFF AT FL230 AND DO A TIGHT 90 DEG TURN OFF COURSE. IT TOOK EVERYTHING WE HAD TO JUST CTL THE ACFT IN THE TURB WHILE TRYING TO LEVEL OFF AND TURN AND SLOW DOWN. TCASII NEVER DID GO OFF; SO WE NEVER DID KNOW JUST HOW CLOSE WE CAME TO TFC AHEAD. LATER WE WERE TOLD THAT THE WINDS WERE 180 DEGS OUT ACROSS FRONT AND WINDS RPTED AT 135 KTS AT THAT ALT. LATER; AFTER BEING REASSIGNED TO CLB TO FL310; WE ENCOUNTERED SHORTLY AFTER BREAKING OUT (FL250?) ON TOP THE REVERSE WIND SHEAR WITH LOSS OF AIRSPD AND RATE OF CLB DROPPING TO '0.' THE FRONT WAS VISIBLE LATER ON CLB AND HAD A SHARP LINE OF DEFINITION WITH CLOUDS LOOKING LIKE A 25000 FT WALL ON ONE SIDE; CLR ON THE OTHER SIDE. I NEVER DID FIND OUT HOW MUCH OF A TEMP AND PRESSURE DIFFERENCE THERE WAS ACROSS THE FRONT TO CAUSE SUCH AN UPSET. (I.E.; OUR DC9-30 WAS PWRED WITH BIG ENGS; -15'S; AND WE HAD ONLY A MEDIUM WT/LOAD. I GUESS I NEVER GAVE WIND SHEAR AT ALT MUCH THOUGHT BEFORE; UNTIL NOW.