Two-time F1 world champion Fernando Alonso has insisted he is not concerned despite suffering another engine failure today in practice for Sunday's Chinese Grand Prix at the Shanghai International Circuit.

Although the Spaniard failed to set a time in FP1 as a result, and missed the final third of the session, he wasn't too upset as the unit was previously substituted out of his Ferrari F10 after qualifying in Bahrain when the Maranello-based outfit detected some 'abnormal parameters'.

Indeed he added that it was somewhat expected and he bounced back in FP2, completing 33 tours in total and finishing proceedings in tenth place overall, on a 1 minute 36.604 seconds.

"Clearly I'm not happy to have had an engine failure, but I'm not the slightest bit worried by it. The engine I had this morning was the one we had changed after qualifying in Bahrain and we knew that, sooner or later, it could break," Alonso reflected. "It happened today, but it won't have much effect on our original engine management plan.

"It is pointless looking at today's time sheets too, because each team follows its own work programme and that makes it impossible to compare the times. We stuck to our plan and we are pretty happy with what we achieved. I think we will be competitive at this track."

Team-mate Felipe Massa meanwhile had no such problems in the sister car and he ended FP1 in tenth and FP2 in eleventh, three tenths off Alonso on a 1m 36.944s. In total he did 19 laps in the first session and 36 in the second.

"I am satisfied with the way this free practice day went. We did a lot of kilometres, concentrating mainly on preparing the car for Sunday's race. We also evaluated new aerodynamic components, not just for this race, but also for mid-term development, gathering significant data which will now be analysed by the engineers," Massa explained.

"On top of that, we managed to do a comparison between the two types of tyre that Bridgestone has brought here. I think several teams are going to be very competitive: not just McLaren and Red Bull, but also Mercedes who have made a step forward. Let's hope we will be in the fight with them."

Ferrari boss, Stefano Domenicali was also pretty pleased with the day, and like Alonso, said the latest engine failure was of little significance.

"Today, we had various new components on the car, including a new type of rear wing and other aerodynamic parts, which required a specific work schedule," Domenicali added. "Clearly we could have done without the problem we had with Fernando's engine but, overall, this did not lead to any specific consequences, apart from time lost in this morning's first session, as our management programme relating to available engine use remains substantially unchanged.

"We are reasonably happy with the work we did and now we will concentrate on analysing the date and on preparing the cars for qualifying and the race. While it is always difficult to evaluate the pecking order based on what happens in free practice, we are not expecting a very different picture to the one we have seen in the first three races of the season: in other words, everyone is very closely matched, meaning the grid positions on Saturday could be decided by the smallest detail."